Relevant bibliographies by topics / Third generation (3G)

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Third generation (3G)'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Third generation (3G)"

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Goodrick, Joanna, and Lara Srivastava. "Licensing of third generation (3G) mobile." info 4, no. 1 (February 2002): 48–55. http://dx.doi.org/10.1108/14636690210426631.

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Blanchard, Colin. "Security for the Third Generation (3G) Mobile System." Information Security Technical Report 5, no. 3 (September 2000): 55–65. http://dx.doi.org/10.1016/s1363-4127(00)03007-7.

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Goble, Ryan A. "Linguistic Insecurity and Lack of Entitlement to Spanish among Third-Generation Mexican Americans in Narrative Accounts." Heritage Language Journal 13, no. 1 (April 30, 2016): 29–54. http://dx.doi.org/10.46538/hlj.13.1.2.

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The purpose of this study is to examine the narrative accounts (De Fina, 2009) of third-generation (3G) Mexican-Americans, as they aim to excuse their English monolingualism in contexts that have reinforced the ideology that they should speak native-like Spanish. Traditionally, studies that have investigated the intergenerational disappearance of Spanish by the 3G have focused on how parents and grandparents have socialized the 3G to use or not use Spanish, without much attention to the 3G themselves. The present study aims to extend this line of research by analyzing the narrated and recontexutalized interactions that the 3G claims have resulted in the attrition of Spanish in their respective families. Through the theoretical frameworks of indexicality (Ochs, 1992) and imagined communities (Anderson, 1991), the findings indicate that the participants index linguistic insecurity (Preston, 2013) when they recount using Spanish with their generational predecessors, whom they construct as having a stronger nativist orientation. Such insecurity emanates from the unattainable goal to speak native-like Spanish, which is exacerbated by familial teasing. These speakers’ negative selfperception consequently leads to their withdrawal from imagined communities of Spanish owners, contributing to the intergenerational loss of Spanish.
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Gannagé-Yared, Marie-Hélène, Nada Younès, Anne-Sophie Azzi, and Ghassan Sleilaty. "Comparison between Second- and Third-Generation PTH Assays during Minimally Invasive Parathyroidectomy (MIP)." International Journal of Endocrinology 2020 (March 16, 2020): 1–8. http://dx.doi.org/10.1155/2020/5230985.

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Context. Intraoperative PTH (IOPTH) drop of more than 50% during minimally invasive parathyroidectomy (MIP) predicts the surgery success. Comparison between second- and third-generation PTH assays (PTH 2G and PTH 3G) on IOPTH decline is scarce. The aim of this study is to compare both assays and to determine the predictors of IOPTH decline. Methods. 112 patients (of which 72.3% females) underwent MIP by the same surgeon. Age, sex, body mass index (BMI), pre- and postoperative serum calcium, creatinine, 25(OH)D levels, PTH at baseline (PTH T0), and PTH at 10 minutes after adenoma resection (PTH T10) were recorded. Both PTH 2G and PTH 3G assays were assessed using the Diasorin assays. Results. The mean age was 56.1 ± 14.7 years. Mean value of BMI, preoperative calcium, 25(OH)D, and CKD-EPI-eGFR were, respectively, 26.8 ± 4.8 kg/m2, 110.9 ± 7.9 mg/L, 19.3 ± 9.2 ng/mL, and 88.6 ± 25.6 mL/min/1.73 m2. PTH 2G and PTH 3G assays were well correlated at PTH T0 and PTH T10 (respectively, correlation coefficient 0.74 and 0.72 for intraclass correlation type 3). The median PTH fall was, respectively, of 79.9% and 82.5% for PTH 2G and PTH 3G. Multivariate analysis using the combined PTH 2G and PTH 3G as a dependent variable with 2 repeated measurements (at PTH 0 and PTH 10) showed a significant effect of preoperative calcium on IOPTH fall (p=0.001, effect size 0.13), while no significant effects were observed for sex, age, BMI, and 25(OH)D. Conclusion. PTH 2G and PTH 3G assays resulted in a similar drop in IOPTH values. Elevated preoperative calcium levels are the only independent predictor of IOPTH decline. Further studies are needed to determine other factors that can influence PTH kinetics.
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Dickson, Kyley, John Sorochan, William Strunk, and Taylor Williams. "Impact of Brushing and Infill Maintenance on Field Safety of Third Generation Synthetic Turf." Proceedings 49, no. 1 (June 15, 2020): 34. http://dx.doi.org/10.3390/proceedings2020049034.

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The objective of this study was to investigate the impact of brushing and infill maintenance of third generation (3G) synthetic turf on field safety. A split-plot randomized complete block design was used with six different fiber pile heights, infill depths, and shock pad combinations subjected to 120 games in the summer of 2017 at the Center for Athletic Field Safety (CAFS) in Knoxville, TN, USA. Traffic was applied with a CAFS traffic simulator. Half of the plots received maintenance every 20 games with a rotating power broom and infill applied to those below manufacturer’s recommendations. All 3G synthetic turf systems required maintenance to the same degree, and maintenance was necessary to keep surface hardness of 3G synthetic turf systems consistent and acceptable. Overall, field safety and consistency increased in this study due to maintenance, thus suggesting brushing and infill maintenance plays a vital role in maintaining high performance on 3G synthetic fields.
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Riedel, Benedikt, Lincoln Bryant, John Carlstrom, Thomas Crawford, Robert W. Gardner, Nicholas Harrington, Nicholas Huang, Alexandra Rahlin, Judith Stephen, and Nathan Whitehorn. "SPT-3G Computing." EPJ Web of Conferences 214 (2019): 03051. http://dx.doi.org/10.1051/epjconf/201921403051.

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SPT-3G, the third generation camera on the South Pole Telescope (SPT), was deployed in the 2016-2017 Austral summer season. The SPT is a 10-meter telescope located at the geographic South Pole and designed for observations in the millimeter-wave and submillimeter-wave regions of the electromagnetic spectrum. The SPT is primarily used to study the cosmic microwave background (CMB). The upgraded camera produces an order of magnitude more data than the previous generations of SPT cameras. The telescope is expected to collect a petabyte (PB) of data over course of five years, which is a significantly larger data volume than any other CMB telescope in operation. The increase in data rate required radical changes to the SPT computing model both at the South Pole and University of Chicago. This paper will describe the overall integration of distributed storage and compute resources into a common interface, deployment of on-site data reduction and storage infrastructure, and the usage of the Open Science Grid (OSG) by the SPT collaboration.
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Karjaluoto, Heikki. "An Investigation of Third Generation (3G) Mobile Technologies and Services." Contemporary Management Research 2, no. 2 (January 3, 2007): 91. http://dx.doi.org/10.7903/cmr.653.

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Karim, Bakhtiar Ali, and Bzhar Rahaman Othman. "Study of Uplink Interference in UMTS Network: ASIACELL Company, Iraq." Kurdistan Journal of Applied Research 5, no. 1 (June 9, 2020): 137–48. http://dx.doi.org/10.24017/science.2020.1.7.

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Universal Mobile Telecommunications System (UMTS), is the third generation (3G) of mobile communication which is based on the wideband code division multiple access (W-CDMA) radio access to provide bandwidth and spectral efficiency. Interference in 3G system is significantly lower compared to the preceded generations. However, it does not mean 3G is free from the issues associated with interferences, such as low signal quality and call drop. The interference level in UMTS can be measured by using the well-known parameter Received Total Wideband Power (RTWP). This parameter is affected by many factors such as number of the users connected to the system, combining second generation (2G) and 3G frequencies within the same geographical area, geographical causes (difference of Altitude), and hardware impairment. In this paper we intensively study how these factors affect the uplink interference level (i.e. RTWP value) in 3G system used by a particular telecommunications company, Asiacell company, Iraq. The obtained data shows that call drop is the most serious issue raised due to high value of RTWP in 3G system. We demonstrate that system enhancement, in terms of lower RTWP level, are obtained by adding second carrier to the sites, separating 2G band from 3G band using special filter, and optimizing the hardware components.
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Zheng, Ming Xing, Ai Hua Zhang, Jing Xu, and Yang Sun. "The Role of Self-Construal in 3G Acceptance in China: An Empirical Investigation." Applied Mechanics and Materials 411-414 (September 2013): 865–74. http://dx.doi.org/10.4028/www.scientific.net/amm.411-414.865.

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This study aims to validate a model of consumer acceptance for 3G use in China. It integrates the technology acceptance model (TAM) and satisfaction theory to examine plans to introduce third-generation mobile phones to second-generation mobile phone users. In addition, this study considers the effect of self-construal on the perceived usefulness, perceived ease of use, subjective norms, prior satisfaction with 2G/2.5G, and intention to use 3G. The empirical results of this study show that the technology acceptance model partially explains consumers intentions to adopt 3G technology. Although consumers perceive that 3G is easier to use, this does not directly influence them to use 3G. Prior satisfaction with their current model of phone does not influence consumers intention to use 3G. Moreover, self-construal has moderate effects on the relationship between perceived usefulness, subjective norms, and the intention to use 3G.
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van der Hofstad, Remco, and Marten J. Klok. "Improving the performance of third-generation wireless communication systems." Advances in Applied Probability 36, no. 04 (December 2004): 1046–84. http://dx.doi.org/10.1017/s0001867800013318.

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The third-generation (3G) mobile communication system uses a technique called code division multiple access (CDMA), in which multiple users use the same frequency and time domain. The data signals of the users are distinguished using codes. When there are many users, interference deteriorates the quality of the system. For more efficient use of resources, we wish to allow more users to transmit simultaneously, by using algorithms that utilize the structure of the CDMA system more effectively than the simple matched filter (MF) system used in the proposed 3G systems. In this paper, we investigate an advanced algorithm called hard-decision parallel interference cancellation (HD-PIC), in which estimates of the interfering signals are used to improve the quality of the signal of the desired user. We compare HD-PIC with MF in a simple case, where the only two parameters are the number of users and the length of the coding sequences. We focus on the exponential rate for the probability of a bit-error, explain the relevance of this parameter, and investigate how it scales when the number of users grows large. We also review extensions of our results, proved elsewhere, showing that in HD-PIC, more users can transmit without errors than in the MF system.
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Dissertations / Theses on the topic "Third generation (3G)"

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Nader, Gustavo. "Ultra Wideband Interference on Third-Generation Wireless Networks." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/30046.

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As a license-exempt technology, Ultra Wideband (UWB) can be used for numerous commercial and military applications, including ranging, sensing, low-range networking and multimedia consumer products. In the networking and consumer fields, the technology is envisioned to reach the mass market, with a very high density of UWB devices per home and office. The technology is based on the concept of transmitting a signal with very low power spectral density (PSD), while occupying a very wide bandwidth. In principle, the low emissions mask protects incumbent systems operating in the same spectrum from being interfered with, while the wide bandwidth offers the possibility of high data rates, in excess of 250 Mbps. UWB has been regulated to operate in the 3.1 to 10.6 GHz portion of the spectrum, with an emissions mask for the lower and upper bands outside this range. The commercial wireless mobile services based on third generation (3G) networks occupy a portion of the spectrum in the 2 GHz band, falling under the UWB emissions mask. UWB and UMTS (Universal Mobile Telephone Systems) devices will coexist, sharing the same spectrum. In this research, we investigate the UWB-3G coexistence problem, analyzing the impact of UWB on UMTS networks. Firstly, we review the mathematical model of the UWB signal, its temporal and spectral properties. We then analyze and model the effects of the UWB signal on a narrowband receiver. Next, we characterize the response of the UMTS receiver to UWB interference, determining its statistical behavior, and establishing a model to replicate it. We continue by proposing a link level model that offers a first order quantitative estimate of the impact of a UWB interferer on a UMTS victim receiver, demonstrating the potentially harmful effect of UWB on the UMTS link. We elaborate on that initial evidence by proposing and implementing a practical systemlevel algorithm to realistically simulate the behavior of the UMTS network in the presence of multiple sources of UWB interference. We complete the research by performing UMTS system level simulations under various conditions of UWB interference, with the purpose of assessing its impact upon a typical UMTS network. We analyze the sensitivity of the main UWB parameters affecting UMTS performance, investigating the coverage and capacity performance aspects of the network. The proposed analysis methodology creates a framework to characterize the impact that mass-deployed UWB can have on the performance of a 3G system. The literature on UWB-3G coexistence is inconclusive, and even contradictory, as to the impact UWB can have on the performance of third-generation wireless networks. While some studies show that UWB can be highly detrimental to 3G networks, others have concluded that both systems can gracefully coexist. Through this study, we found that at the current emissions limits regulated for UWB, a mass uptake of this technology can negatively affect the performance of third-generation (3G) wireless networks. The quality of service experienced by a 3G user in close proximity to an active UWB device can be noticeably degraded, in the form of reduced coverage range, poor voice quality (for a voice call), lower data rates (for a data session) or, in a extreme situation, complete service blockage. As the ratio of UWB devices surrounding a 3G user grows, the degradation becomes increasingly more evident. We determined that in order for UWB tocoexist with 3G networks without causing any performance degradation, a minimum power backoff of 20 dB should be applied to the current emission limits.
Ph. D.
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Nader, Gustavo. "Radio Link Performance of Third Generation (3G) Technologies For Wireless Networks." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/32251.

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Third generation wireless mobile communication networks are characterized by the increasing utilization of data services â e-mail, web browsing, video streaming, etc. Such services allow the transition of the network from circuit switched to packet switched operation (circuit switched operation will still be supported), resulting in increased overall network performance. These new data services require increased bandwidth and data throughput, due to their intrinsic nature. Examples are graphics-intensive web browsing and video streaming, the latter being delay sensitive and requiring priority over less sensitive services such as e-mail. This increasing demand for bandwidth and throughput has driven the work of third generation standardization committees, resulting in the specification of improved modulation and coding schemes, besides the introduction of more advanced link quality control mechanisms. Among the several proposals for the evolution from 2G to 3G, GPRS (General Packet Radio Services) and EDGE (Enhanced Data Rates for GSM Evolution) stand out as transitional solutions for existing TDMA IS-136 and GSM networks (they are also referred to as 2.5G systems). In the CDMA arena, WCDMA (Wideband CDMA) has emerged as the most widely adopted solution, with CDMA 2000, an evolution from IS-95, also being considered. This thesis compiles and analyzes the results of the work by the standardization committees involved in the specification of 3G standards, focusing on the receiver performance in the presence of additive noise, fading and interference. Such performance results will ultimately determine design and optimization conditions for 3G networks. This document concerns the description of the TDMA-based 2.5G solutions that allow the introduction of multimedia and enhanced data services to existing 2G networks. It focuses on GPRS and EDGE. It also addresses WCDMA â a 3G spread spectrum solution. Such proposals permit the utilization of existing spectrum with increased efficiency, yielding extended network capacity and laying the ground for full support of wireless multimedia applications. The study is focused on the link implementation aspect of these solutions, showing the impact of the modulation schemes and link quality control mechanisms on the performance of the radio link.
Master of Science
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Dawood, Muneeb. "Error resilient packet switched H.264 video telephony over third generation networks." Thesis, De Montfort University, 2010. http://hdl.handle.net/2086/4849.

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Real-time video communication over wireless networks is a challenging problem because wireless channels suffer from fading, additive noise and interference, which translate into packet loss and delay. Since modern video encoders deliver video packets with decoding dependencies, packet loss and delay can significantly degrade the video quality at the receiver. Many error resilience mechanisms have been proposed to combat packet loss in wireless networks, but only a few were specifically designed for packet switched video telephony over Third Generation (3G) networks. The first part of the thesis presents an error resilience technique for packet switched video telephony that combines application layer Forward Error Correction (FEC) with rateless codes, Reference Picture Selection (RPS) and cross layer optimization. Rateless codes have lower encoding and decoding computational complexity compared to traditional error correcting codes. One can use them on complexity constrained hand-held devices. Also, their redundancy does not need to be fixed in advance and any number of encoded symbols can be generated on the fly. Reference picture selection is used to limit the effect of spatio-temporal error propagation. Limiting the effect of spatio-temporal error propagation results in better video quality. Cross layer optimization is used to minimize the data loss at the application layer when data is lost at the data link layer. Experimental results on a High Speed Packet Access (HSPA) network simulator for H.264 compressed standard video sequences show that the proposed technique achieves significant Peak Signal to Noise Ratio (PSNR) and Percentage Degraded Video Duration (PDVD) improvements over a state of the art error resilience technique known as Interactive Error Control (IEC), which is a combination of Error Tracking and feedback based Reference Picture Selection. The improvement is obtained at a cost of higher end-to-end delay. The proposed technique is improved by making the FEC (Rateless code) redundancy channel adaptive. Automatic Repeat Request (ARQ) is used to adjust the redundancy of the Rateless codes according to the channel conditions. Experimental results show that the channel adaptive scheme achieves significant PSNR and PDVD improvements over the static scheme for a simulated Long Term Evolution (LTE) network. In the third part of the thesis, the performance of the previous two schemes is improved by making the transmitter predict when rateless decoding will fail. In this case, reference picture selection is invoked early and transmission of encoded symbols for that source block is aborted. Simulations for an LTE network show that this results in video quality improvement and bandwidth savings. In the last part of the thesis, the performance of the adaptive technique is improved by exploiting the history of the wireless channel. In a Rayleigh fading wireless channel, the RLC-PDU losses are correlated under certain conditions. This correlation is exploited to adjust the redundancy of the Rateless code and results in higher Rateless code decoding success rate and higher video quality. Simulations for an LTE network show that the improvement was significant when the packet loss rate in the two wireless links was 10%. To facilitate the implementation of the proposed error resilience techniques in practical scenarios, RTP/UDP/IP level packetization schemes are also proposed for each error resilience technique. Compared to existing work, the proposed error resilience techniques provide better video quality. Also, more emphasis is given to implementation issues in 3G networks.
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Tay, Jeremy Yee Chiat. "Multimedia Analysis Over 3G Wireless Interface." Queensland University of Technology, 2003. http://eprints.qut.edu.au/15810/.

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Recent rapid advancements in mobile communication and emerging demands for complicated multimedia content and services over mobile systems have caused a dramatic increase in research interest in this area. Among the topics covering multimedia service performance over the wireless interface, the quality of received multimedia content is an important issue. With the increase of visual media in mobile services, user opinion acquired through perception of received image quality will play an increasingly important role in determining the effectiveness of such services. The work documented in this thesis is motivated by the general lack of published work on software test beds for Third Generation Mobile Network (3G) and in particular for investigating mobile environment multimedia quality degradation. A 3G multimedia quality analysis system is presented, subjecting the input multimedia stream to the simulated 3G radio activities and measuring its degradation in terms of human perception. This approach takes a new and different model of multimedia quality measurement in a wireless communication domain, showing the possibility of a more effective approach that can be applied in many cases for assisting service quality assurance research across this area. The development of this software system is covered in detail together with in-depth analysis of multimedia image quality over a simulated 3G radio interface. Universal Mobile Telecommunications System (UMTS) is the 3G standard chosen for study in this work. The suggested test bed simulates a single Frequency Division Duplex (FDD) downlink UMTS Territorial Radio Access (UTRA) channel, where the received media's image analysis is performed using a Human Vision System (HVS) based image quality metric. The system aims to provide a multipurpose and versatile multimedia 3G test bed for use in testing of various solutions for protecting multimedia data across a 3G radio interface. Furthermore, it produces effective human vision oriented feedback on visual media degradation, providing a new and efficient method to address effectiveness of solutions in multimedia delivery over a mobile environment. This thesis shows the ability of HVS-based image quality metric in analyzing degradation of visual media over a noisy mobile environment. This presents a novel direction in the area of telecommunication service multimedia quality analysis, with potential user quality perception being considered on top of data or signal-based error measurements. With such a new approach, development of multimedia protection solutions can be made more effective. Effective feedback provided by considering quality measurement with strong correlation to human perception allows close analysis of user visual discrimination across an image. An example of the usefulness of this information is especially visible if considering development of a content-based multimedia data protective system that provides different levels of protection, depending on the importance of visual media. An apparent potential application of this thesis is in the testing of a multimedia/image protection protocol in a downlink channel. Future work might aim to extend the current system by adding network level traffic simulations and further addition of dynamic network control components, further considering network traffic conditions.
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Paulson, Donald H. "Analysis of a proposed third generation (3G) mobile communication standard, time division-synchronous code division multiple access (TD-SCDMA)." Thesis, Monterey, California. Naval Postgraduate School, 2002. http://hdl.handle.net/10945/5860.

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Approved for public release; distribution is unlimited
With a growing number of consumers utilizing the Internet, companies have foreseen a consumer demand for high-speed wireless access. Since current mobile cellular systems can transfer at most 115.2 kbps per user, a third generation of mobile cellular service has been under development by various organizations since 1997. This new generation of technology will support data rates up to 2 Mbps for stationary mobiles and up to 144 kbps for vehicular traffic. This thesis focuses mainly on TD-SCDMA, one of many candidates submitted to the International Telecommunications Union for third generation review. The standard, developed in China by the Chinese Academy of Telecommunications Technology, employs both code-division multiple access and time-division duplexing to support both forward and reverse transmissions on one physical layer. This aspect, along with other common features of TD-SCDMA, will be studied and evaluated to determine if this new technology is a viable option for future commercial or military deployment.
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Paulson, Donald H. "Analysis of a proposed third generation (3G) mobile communication standard, time division-synchronous code division mulitple access (TD-SCDMA)." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2002. http://library.nps.navy.mil/uhtbin/hyperion-image/02Jun%5FPaulson.pdf.

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Al-Mohandes, Ibrahim. "Energy-Efficient Turbo Decoder for 3G Wireless Terminals." Thesis, University of Waterloo, 2005. http://hdl.handle.net/10012/838.

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Since its introduction in 1993, the turbo coding error-correction technique has generated a tremendous interest due to its near Shannon-limit performance. Two key innovations of turbo codes are parallel concatenated encoding and iterative decoding. In its IMT-2000 initiative, the International Telecommunication Union (ITU) adopted turbo coding as a channel coding standard for Third-Generation (3G) wireless high-speed (up to 2 Mbps) data services (cdma2000 in North America and W-CDMA in Japan and Europe). For battery-powered hand-held wireless terminals, energy consumption is a major concern. In this thesis, a new design for an energy-efficient turbo decoder that is suitable for 3G wireless high-speed data terminals is proposed. The Log-MAP decoding algorithm is selected for implementation of the constituent Soft-Input/Soft-Output (SISO) decoder; the algorithm is approximated by a fixed-point representation that achieves the best performance/complexity tradeoff. To attain energy reduction, a two-stage design approach is adopted. First, a novel dynamic-iterative technique that is appropriate for both good and poor channel conditions is proposed, and then applied to reduce energy consumption of the turbo decoder. Second, a combination of architectural-level techniques is applied to obtain further energy reduction; these techniques also enhance throughput of the turbo decoder and are area-efficient. The turbo decoder design is coded in the VHDL hardware description language, and then synthesized and mapped to a 0. 18μm CMOS technology using the standard-cell approach. The designed turbo decoder has a maximum data rate of 5 Mb/s (at an upper limit of five iterations) and is 3G-compatible. Results show that the adopted two-stage design approach reduces energy consumption of the turbo decoder by about 65%. A prototype for the new turbo codec (encoder/decoder) system is implemented on a Xilinx XC2V6000 FPGA chip; then the FPGA is tested using the CMC Rapid Prototyping Platform (RPP). The test proves correct functionality of the turbo codec implementation, and hence feasibility of the proposed turbo decoder design.
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Tilson, David Albert. "The Interrelationships between Technical Standards and Industry Structures: Actor-Network Based Case Studies of the Mobile Wireless and Television Industries in the US and the UK." online version, 2008. http://rave.ohiolink.edu/etdc/view.cgi?acc%5Fnum=case1207164101.

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Thesis (Ph. D.)--Case Western Reserve University, 2008.
Department of Information Systems, Weatherhead School of Management. Includes bibliographical references. Available online via OhioLINK's ETD Center.
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Queiroz, Eduardo Martinelli Galvão de. "Algoritmo de alocação dinâmica de largura de faixa para redes de comunicação móvel celular." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/18/18155/tde-20062008-100444/.

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O crescente aumento da demanda de tráfego nas redes celulares vem aumentando a necessidade de uma melhor utilização dos recursos do sistema, já que sua expansão é custosa. Nas estações rádio base (ERB), a disponibilidade de largura de faixa de freqüências é limitada e desta maneira, em uma rede de comunicação móvel celular, o controle de admissão de chamadas exerce grande influência no desempenho do sistema, pois determina a utilização de banda das ERBs e se uma determinada quantidade de recursos (banda) será alocado ou não para uma determinada chamada. O desempenho da rede pode ser atrelado a determinados parâmetros, como a probabilidade de bloqueio de novas chamadas, probabilidade de bloqueio de chamadas handoff e a utilização de banda da rede. Este trabalho propõe um controle de admissão de chamadas que, no atendimento de uma chamada, faz o empréstimo de banda de chamadas em andamento na célula no caso de banda insuficiente. O sistema adota um mecanismo heurístico que determina a banda disponível para novas chamadas conforme os valores de certos parâmetros do sistema. O empréstimo de banda é realizado em chamadas em andamento nas células até níveis mínimos estabelecidos para cada tipo de chamada, que se diferenciam pelas necessidades de banda de cada uma. O algoritmo foi aplicado às bandas e características de uma rede de terceira geração (3G), que possui chamadas de voz, videoconferência, interação multimídia, e-mail, downloads e transferência de arquivos e a uma rede GSM/GPRS (global system for mobile communications/ general packet radio service), que possui chamadas de voz e de dados. Os resultados mostram melhorias na probabilidade de bloqueio de novas chamadas, probabilidade de bloqueio de handoff e na utilização de banda do sistema.
The recent growth in traffic loads in cellular networks has seen the need for a better use of system resources as its expansion is expensive. In the base transceiver station (BTS), the bandwidth availability is limited. Thus, in cellular networks the call admission control greatly influences the system performance because it determines the bandwidth use of the BTSs and if an amount of resources will or will not be allocated to a call. The network performance can be evaluated by parameters such as blocking probability of new calls, dropping probability of handoff calls and bandwidth use. This work proposes a call admission control that carries out the bandwidth borrowing when a call arrives and there is not enough bandwidth. The system makes use of a heuristic mechanism that determines the available bandwidth for the new calls according to some parameter values of the system. The bandwidth borrowing is applied to the cell ongoing calls until the minimum levels for each type are met. The algorithm was applied to the bandwidths and characteristics of a third generation cellular network, which supports voice calls, videoconference, multimedia interaction, e-mails, downloads and file transfers. It was also applied to a GSM/GPRS (global system for mobile communications/ general packet radio service), which supports voice and data calls. The results show improvements in the blocking probability of new calls, dropping probability of handoff calls and in the bandwidth use of the system.
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Kumar, Kasireddy Sai Suren, and Bojja Vishnu Vardhan. "Measurements of Energy Consumptions in Mobile Applications with respect to Quality of Experience." Thesis, Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-2456.

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Nowadays, Third Generation (3G) mobile phones equipped with powerful hardware are becoming popular and dominating the market of cellular com-munication systems. Features such as music and video players, in-built Global Positioning System (GPS) receivers, navigation maps, Internet connectivity and high resolution cameras has converted mobile phones into so called Smartphones. With the increase in applications and services, limitations on energy consumption are also increasing. Therefore, it is more im-portant for manufacturers to nd e ective means of increasing battery life of mobile phones, as the mobile device itself is energy consuming and longer operational times are demanded by customers. Good energy mangement in mobile phones requires a good understanding of the energy usage in mobile phones. To this end, this thesis report presents the results of power and energy consumption measurements conducted on available Smartphones. The services under investigation includes basic Smartphone functionalities and few Internet services are studied and conclusions were drawn. This paper presents a cost e ective methodology for reliable measurements of energy on Smartphones. It also examines the e ect of operating systems on en-ergy consumption in mobile phones and reports less energy consumption for Android supported phones. The energy consumption of these Smartphones with respect to various applications has been studied and related to Quality of Experience of users'. Based on the results conclusions were drawn.
This Thesis will serve as a guide to manufacturers and Users of smartphones while choosing smartphones and designing energy-efficient protocols.
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Books on the topic "Third generation (3G)"

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1976-, Dorey Ed, and MacLellan Andy 1979-, eds. 3G marketing on the internet: Third generation internet marketing strategies for online success. 7th ed. Gulf Breeze, FL: Maximum Press, 2006.

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Sweeney, Susan, Andy MacLellan, and Ed Dorey. 3G Marketing on the Internet: Third-Generation Internet Marketing Strategies for Online Success (3g Marketing on the Internet: Third Generation Internet Marketing). Maximum Press, 2008.

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Analysis of a Proposed Third Generation (3G) Mobile Communication Standard, Time Division - Synchronous Code Division Multiple Access (TD-SCDMA). Storming Media, 2002.

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Hong, Yu. Making a Home-Base Strategy. University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252040917.003.0005.

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This chapter traces the evolution of mobile communications as a site of China’s “home-base” industrial strategy and, after the 2008 global economic crisis, as part of intensified geopolitical struggle in the techno-economic realm. This chapter, first, historicizes telecom development through successive network generations, starting from fixed-line networks to second-generation and then third-generation mobile networks. As the business ecosystem includes network-equipment production, handset production, and content development and distribution, this chapter, then, explores market-specific trajectories, dynamics, and challenges so as to make sense of varying state actions and the obstacles they faced under the general 3G developmental framework. Lastly, to underscore the state’s diluted interventionist capacity, the coda explores how the 3G mobile communications development has affected state strategies and competitive structures in the 4G era.
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Book chapters on the topic "Third generation (3G)"

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Virtej, Iuliana, Heikki Koivo, Jyrki Joutsensalo, Tapani Ristaniemi, and Aleksandar M. Gogic. "Prototypes Of 3G Systems." In Third Generation Mobile Telecommunication Systems, 465–553. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-642-56919-7_9.

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"Third-Generation (3G) Cellular Communications." In Wireless Networking, 366–468. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118590775.ch7.

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"Third Generation Network (3G), UMTS." In Introduction to Mobile Network Engineering, 121–72. Chichester, UK: John Wiley & Sons Ltd, 2018. http://dx.doi.org/10.1002/9781119484196.ch9.

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"Third Generation Leadership (3G Leaders)." In Third Generation Leadership and the Locus of Control, 67–78. Routledge, 2016. http://dx.doi.org/10.4324/9781315551104-12.

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Perakis, Konstantinos. "Third Generation (3G) Cellular Networks in Telemedicine." In Handbook of Research on Distributed Medical Informatics and E-Health, 241–59. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-60566-002-8.ch017.

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The evolutions in the field of telecommunications technologies, with the robustness and the fidelity these new systems provide, have significantly contributed in the advancement and development in the field of medicine, and they have also brought forth the need for their utilisation in the healthcare sector. Thus, telemedicine and e-Health have clearly started to become an important issue for implementation, operational deployment of services and a promising market for industry. Recognizing this trend, its importance in the lives of citizens all around the globe and its contribution in the daily healthcare delivery by all actors involved in the procedure, the authors of this chapter attempt to familiarize the readers with the impact that high broadband wireless networks have upon telemedicine services and with the way they facilitate the secure transmission of vital information stemming from bandwidth demanding applications in real time. After providing the readers with an overview of telemedical services and commenting on how they can offer added value to existing healthcare services, they provide an analysis of the wireless infrastructure that has facilitated telemedical services over the years, and point out the significant role that the third generation telecommunications systems can play in the field. After that, follows an analysis of the range of new applications that can be supported by the 3G telecommunications infrastructure, and the related research that has taken place in the European level regarding the utilization of 3G networks for telemedical applications. However, 3G networks are not a panacea; for this reason the limitations of this infrastructure is also stressed out. The authors conclude by discussing whether 3G networks can prove to be an attractive solution for telemedical services to healthcare providers.
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"Developing 3G Leaders and Third Generation Leadership." In Third Generation Leadership and the Locus of Control, 107–16. Routledge, 2016. http://dx.doi.org/10.4324/9781315551104-15.

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Tong, C., and E. Wong. "Mobile Medical Image Viewing Using 3G Wireless Network." In Encyclopedia of Mobile Computing and Commerce, 533–40. IGI Global, 2007. http://dx.doi.org/10.4018/978-1-59904-002-8.ch089.

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Jain, Ankur, Lalit Wangikar, Martin Ahrens, Ranjan Rao, Suddha Sattwa Kundu, and Sutirtha Ghosh. "Classification of 3G Mobile Phone Customers." In Mobile Computing, 2862–70. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-60566-054-7.ch216.

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In this article we discuss how we have predicted the third generation (3G) customers using logistic regression analysis and statistical tools like Classification and Regression Tree (CART), Multivariate Adaptive Regression Splines (MARS), and other variables derived from the raw variables. The basic idea reflected in this paper is that the performance of logistic regression using raw variables standalone can be improved upon, by the use for various functions of the raw variables and dummies representing potential segments of the population
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Jain, Ankur, Lalit Wangikar, Martin Ahrens, Ranjan Rao, Suddha Sattwa Kundu, and Sutirtha Ghosh. "Classification Of 3G Mobile Phone Customers." In Data Warehousing and Mining, 2558–65. IGI Global, 2008. http://dx.doi.org/10.4018/978-1-59904-951-9.ch157.

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In this article we discuss how we have predicted the third generation (3G) customers using lo-gistic regression analysis and statistical tools like Classification and Regression Tree (CART), Multivariate Adaptive Regression Splines (MARS), and other variables derived from the raw variables. The basic idea reflected in this paper is that the performance of logistic regression using raw variables standalone can be improved upon, by the use for various functions of the raw variables and dummies representing potential segments of the population.
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Xenakis, Christos. "Security in UMTS 3G Mobile Networks." In Handbook of Research on Wireless Security, 318–38. IGI Global, 2008. http://dx.doi.org/10.4018/978-1-59904-899-4.ch020.

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This chapter analyzes the security architecture designed for the protection of the universal mobile telecommunication system (UMTS). This architecture is built on the security principles of second generation (2G) systems with improvements and enhancements in certain points in order to provide advanced security services. The main objective of the third generation (3G) security architecture is to ensure that all information generated by or relating to a user, as well as the resources and services provided by the serving network and the home environment are adequately protected against misuse or misappropriation. Based on the carried analysis the critical points of the 3G security architecture, which might cause network and service vulnerability are identified. In addition, the current research on the UMTS security and the proposed enhancements that aim at improving the UMTS security architecture are briefly presented and analyzed.
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Conference papers on the topic "Third generation (3G)"

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Howard, P. "Towards a coherent approach to third generation system security." In Second International Conference on 3G Mobile Communication Technologies (3G 2001). IEE, 2001. http://dx.doi.org/10.1049/cp:20010005.

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Watson, A. "The UMTS third generation market-structuring the service revenues opportunities." In Second International Conference on 3G Mobile Communication Technologies (3G 2001). IEE, 2001. http://dx.doi.org/10.1049/cp:20010029.

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Ralph, D. "3G and beyond - the applications generation." In Third International Conference on 3G Mobile Communication Technologies. IEE, 2002. http://dx.doi.org/10.1049/cp:20020434.

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Gould, P. R. "Radio planning of third generation networks in urban areas." In Third International Conference on 3G Mobile Communication Technologies. IEE, 2002. http://dx.doi.org/10.1049/cp:20020362.

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Clarke, N. L. "Advanced subscriber authentication approaches for third generation mobile systems." In Third International Conference on 3G Mobile Communication Technologies. IEE, 2002. http://dx.doi.org/10.1049/cp:20020412.

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Roberts, S. "Numbering, naming and addressing for third generation mobile communications." In First International Conference on 3G Mobile Communication Technologies. IEE, 2000. http://dx.doi.org/10.1049/cp:20000008.

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Katsaros, I. "Novel m-commerce security protocol for third generation mobile networks." In Fourth International Conference on 3G Mobile Communication Technologies. IEE, 2003. http://dx.doi.org/10.1049/cp:20030330.

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Burr, A. G. "Application of space-time coding techniques in third generation systems." In First International Conference on 3G Mobile Communication Technologies. IEE, 2000. http://dx.doi.org/10.1049/cp:20000057.

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Bahai, A. R. S. "Network planning and optimization in the third generation wireless networks." In First International Conference on 3G Mobile Communication Technologies. IEE, 2000. http://dx.doi.org/10.1049/cp:20000088.

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Jalal, A., and Ijaz Uddin. "Security Architecture for Third Generation (3G) using GMHS Cellular Network." In Third International Conference on Emerging Technologies 2007 (ICET 2007). IEEE, 2007. http://dx.doi.org/10.1109/icet.2007.4516319.

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Reports on the topic "Third generation (3G)"

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Ludwig, R., A. Gurtov, and F. Khafizov. TCP over Second (2.5G) and Third (3G) Generation Wireless Networks. Edited by H. Inamura and G. Montenegro. RFC Editor, February 2003. http://dx.doi.org/10.17487/rfc3481.

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