Relevant bibliographies by topics / Wideband Code Division Multiple Access (WCDMA)

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

Academic literature on the topic 'Wideband Code Division Multiple Access (WCDMA)'

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Published: 4 June 2021
Last updated: 4 February 2022

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Journal articles on the topic "Wideband Code Division Multiple Access (WCDMA)"

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Kavipriya, P., and C. Gomathi. "OVSF Code Assignment for Wideband Code Division Multiple Access (WCDMA) in FPGA." i-manager’s Journal on Wireless Communication Networks 1, no. 3 (December 15, 2012): 8–13. http://dx.doi.org/10.26634/jwcn.1.3.2049.

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D, Sivaganesan. "IMPROVISATION OF MESH NETWORK WITH WIDEBAND CODE DIVISION MULTIPLE ACCESS." IRO Journal on Sustainable Wireless Systems 01, no. 03 (September 28, 2019): 198–205. http://dx.doi.org/10.36548/jsws.2019.3.006.

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Mesh Networks are employed in various applications despite issues relevant to interference and network capacity. These networks also impose delay in routing and reconfiguration. Traditionally, TDMA and FDMA techniques have been used in these networks. This paper proposes wideband code division multiple access (WCDMA) technique for enabling maximum power transfer, low energy consumption, interference free and plug-and-play feature enabling easy implementation of the technology. The spatial configuration and node count bounds are stated ensuring continuous satisfaction of quality of service by the communication link. Additionally, dynamic parallel orthogonal transmission and turbo coding schemes are used in combination to improve the efficiency of the network even for large hop counts.
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Ariyanti, Sri. "Studi Penentuan Spesifikasi Teknis Terminal Wideband Code Division Multiple Access (WCDMA)." Buletin Pos dan Telekomunikasi 12, no. 2 (March 20, 2015): 135. http://dx.doi.org/10.17933/bpostel.2014.120205.

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SHARMA, Sanjay Kumar, and S. Naseem AHMAD. "BER Performance of Space-Time Coded MMSE DFE for Wideband Code Division Multiple Access (WCDMA)." International Journal of Communications, Network and System Sciences 02, no. 04 (2009): 276–82. http://dx.doi.org/10.4236/ijcns.2009.24030.

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Surya Winata, I. Gusti Ngurah, Gede Sukadarmika, and Pande Ketut Sudiarta. "ANALISIS DROP CALL PADA JARINGAN WIDEBAND CODE-DIVISION MULTIPLE ACCESS (WCDMA) DI CLUSTER RENON." Jurnal SPEKTRUM 6, no. 1 (May 9, 2019): 44. http://dx.doi.org/10.24843/spektrum.2019.v06.i01.p07.

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Drop call is an example of a problem that is often experienced by users of voice telecommunications services. From this condition, this riset raises the topic of drop call analysis on WCDMA networks in the Renon cluster (nodeB MYAMIN_CR, AKABA_PL, and BUNDARANRENON_PL). Data retrieval needed (Call Set Up Success Rate (CSSR), Call Drop Ratio (CDR), RSCP and Ec/No) is done by drive test using G-NetTrack Pro software. Based on the analysis of the results of the drive test, there were 10 drop call problems. The problems indentified cause by missing neighbors, handover failure, bad spot, coverage problems and overshoot. Bad spots, coverage problems, and overshoot are the initial causes of missing neighbors and handovers failure. Missing neighbors and handover failure begins with the poor value of RSCP and Ec/No, so that the cellphone will try to do a handover. To analyze the drive test results, drive test data is carried out using Atoll software. From the comparison found extreme conditions resulting from obstacle which cause a significant difference in value between the results of the drive test and simulation. The high attenuation rate drop call location due to the obstacle also results in RSCP and Ec/No values being obtained when measurements in the field are low. The low parameter values of RSCP and Ec / No then cause a drop call.
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Li, Jin Zheng, Wei Xia, Zi Shu He, De Jun Zeng, and Xiao Wei Kong. "A Parallelizable Adaptive Method to Update Close-Loop Digital Predistorter for RF Power Amplifiers." Applied Mechanics and Materials 130-134 (October 2011): 4252–55. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.4252.

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This paper presents a parallelizable adaptive method to estimate and update close-loop digital predistorter for RF power amplifiers. The proposed scheme can be realized with multiple processors which can save computational time and be used in real-time implementation. By using a three-carrier wideband code-division multiple access (WCDMA) signal, the scheme is tested in the way of 3 branches in Nios II. Results show that the performance is approximate to that based on RLS algorithm and the time the scheme expensed is much less than that RLS needed.
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Lee, Hongmin, and Jinwon Park. "Isolation Improvement of a Microstrip Patch Array Antenna for WCDMA Indoor Repeater Applications." International Journal of Antennas and Propagation 2012 (2012): 1–8. http://dx.doi.org/10.1155/2012/264618.

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This paper presents the isolation improvement techniques of a microstrip patch array antenna for the indoor wideband code division multiple access (WCDMA) repeater applications. One approach is to construct the single-feed switchable feed network structure with an MS/NRI coupled-line coupler in order to reduce the mutual coupling level between antennas. Another approach is to insert the soft surface unit cells near the edges of the microstrip patch elements in order to reduce backward radiation waves. In order to further improve the isolation level, the server antenna and donor antenna are installedinorthogonal direction. The fabricated antenna exhibits a gain over 7 dBi and higher isolation level between server and donor antennas below −70 dB at WCDMA band.
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Eli-Chukwu, N. C., and G. N. Onoh. "Experimental Study on the Impact of Weather Conditions on Wide Code Division Multiple Access Signals in Nigeria." Engineering, Technology & Applied Science Research 9, no. 2 (April 10, 2019): 3998–4001. http://dx.doi.org/10.48084/etasr.2630.

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In cellular network activities, before a site is integrated it is expected that each cell of the site meets the Nigerian Communication Commission (NCC) standard of ≥98% for both service accessibility and call completion rate which in turn depicts a ≤2% in both blocked call rate (BCR) and dropped call rate (DCR). It is suggested that weather conditions have a very strong negative effect on the performance of wideband code division multiple access (WCDMA) network as it could lead to signal attenuation or change the polarization. In this paper, we study the impact of weather conditions on WCDMA network in Nigeria. To achieve this, network samples (log-files) were collected weekly during a driving test in Enugu State Nigeria for a period of five years for both rainy and dry seasons, in which blocked and dropped calls were extracted. Results show that during adverse weather conditions, BCR and DCR rise greater than 8% and 4% respectively. Although with a slight relationship between the weather conditions, the weather condition during the dry season has a better-blocked call rate of 8.76% in comparison with the rainy season with 12.89%. Calls tend to drop more during the dry season. From the outcome of the experiment, a model was developed for predicting an unknown network call statistics variables.
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Crespo-Cadenas, Carlos, Javier Reina-Tosina, and María J. Madero-Ayora. "Performance of a behavioral model with long-term memory effects." International Journal of Microwave and Wireless Technologies 5, no. 4 (April 23, 2013): 447–52. http://dx.doi.org/10.1017/s1759078713000408.

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This paper presents a new behavioral model for power amplifiers that accomplishes the capture of nonlinear low-frequency memory effects with reduced complexity and superior precision. It has been extensively evaluated with a commercial amplifier using wideband code-division multiple-access (WCDMA)-like modulated data with symbol rates in the range of 2 ksym/s to 1 Msym/s, and it is shown that the first dynamic reduction of the proposed model is successfully compared with other highly efficient methods in terms of complexity and generalization capacity.
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Grekhov, Andrii, Vasyl Kondratiuk, and Svitlana Ilnytska. "RPAS COMMUNICATION CHANNELS BASED ON WCDMA 3GPP STANDARD." Aviation 24, no. 1 (May 11, 2020): 42–49. http://dx.doi.org/10.3846/aviation.2020.12166.

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First built models of Remotely Piloted Air System (RPAS) communication channels based on Wideband Code Division Multiple Access (WCDMA) 3GPP Standard were designed. Base Station (BS) transmission within the Radio Line of Sight (RLoS) and through the satellite using Beyond Radio Line of Sight (BRLoS) was considered. The dependencies of the Bit Error Rate (BER) on the signal-noise ratio for different RPAS velocities and WCDMA сhannel models were obtained. The dependences of the BER on the signal-noise ratio for different levels of satellite transponder nonlinearity were studied. The dependence of the BER on the BS antenna diameter in case of the transponder nonlinearity was analysed. The dependencies for satellite channel characteristics, first obtained taking into account the motion of the RPAS, make it possible to predict the behavior of the communication system in critical conditions.
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Dissertations / Theses on the topic "Wideband Code Division Multiple Access (WCDMA)"

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RAO, THUMATI VENKATA. "DATA PROCESSING DESIGN OF WIDEBAND CODE DIVISION MULTIPLE ACCESS (WCDMA)." Thesis, Blekinge Tekniska Högskola, Avdelningen för signalbehandling, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-1318.

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Wideband Direct-Sequence Code Division Multiple Access (W-CDMA) is the emerging protocol for the next generation (3G) wireless communication systems. W-CDMA has been designed to add features such as multimedia capabilities, high data rates and multi-rate services to the existing wireless communication framework. Several standards for third generation systems have been proposed and developed by different industrial committees in countries such as the U.S, Europe and Japan. All these standards have accepted CDMA in one form or another as the multiple access method for wireless communications requirements. In this work, we study the implementation issues involved for one of the proposed Rate Compatible Punctured Convolution Coding (RCPC) to increase information rate in WCDMA, the detection algorithms for base-stations. It was found that these proposed algorithms for detection have different processing and precision requirements. In the rate compatible punctured convolution from each coded symbol some of the bits are punctured in order to achieve the higher information rate. At the same time decoding becomes quite easy even if some of the bits from the coded symbol are not available. We have written these algorithms for a single user at ideal conditions based on theory but not practically.
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Saur, Stephan. "Channel estimation for mobile wideband code division multiple access (WCDMA)." Aachen Shaker, 2008. http://d-nb.info/989680819/04.

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Ahn, Dae-Young. "Interference management and code planning in WCDMA UMTS." Thesis, University of Surrey, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.252354.

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Saur, Stephan [Verfasser]. "Channel Estimation for Mobile Wideband Code Division Multiple Access (WCDMA) / Stephan Saur." Aachen : Shaker, 2008. http://d-nb.info/1162793139/34.

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Fang, Yechang. "Realization of Differentiated Quality of Service for Wideband Code Division Multiple Access Core Network." FIU Digital Commons, 2010. http://digitalcommons.fiu.edu/etd/244.

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The development of 3G (the 3rd generation telecommunication) value-added services brings higher requirements of Quality of Service (QoS). Wideband Code Division Multiple Access (WCDMA) is one of three 3G standards, and enhancement of QoS for WCDMA Core Network (CN) becomes more and more important for users and carriers. The dissertation focuses on enhancement of QoS for WCDMA CN. The purpose is to realize the DiffServ (Differentiated Services) model of QoS for WCDMA CN. Based on the parallelism characteristic of Network Processors (NPs), the NP programming model is classified as Pool of Threads (POTs) and Hyper Task Chaining (HTC). In this study, an integrated programming model that combines both of the two models was designed. This model has highly efficient and flexible features, and also solves the problems of sharing conflicts and packet ordering. We used this model as the programming model to realize DiffServ QoS for WCDMA CN. The realization mechanism of the DiffServ model mainly consists of buffer management, packet scheduling and packet classification algorithms based on NPs. First, we proposed an adaptive buffer management algorithm called Packet Adaptive Fair Dropping (PAFD), which takes into consideration of both fairness and throughput, and has smooth service curves. Then, an improved packet scheduling algorithm called Priority-based Weighted Fair Queuing (PWFQ) was introduced to ensure the fairness of packet scheduling and reduce queue time of data packets. At the same time, the delay and jitter are also maintained in a small range. Thirdly, a multi-dimensional packet classification algorithm called Classification Based on Network Processors (CBNPs) was designed. It effectively reduces the memory access and storage space, and provides less time and space complexity. Lastly, an integrated hardware and software system of the DiffServ model of QoS for WCDMA CN was proposed. It was implemented on the NP IXP2400. According to the corresponding experiment results, the proposed system significantly enhanced QoS for WCDMA CN. It extensively improves consistent response time, display distortion and sound image synchronization, and thus increases network efficiency and saves network resource.
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Argyros, Andreas. "Analysis of Wideband Code Division Multiple Access (WCDMA) system with co-channel interference." Thesis, Monterey, California. Naval Postgraduate School, 2007. http://hdl.handle.net/10945/55195.

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Approved for public release; distribution is unlimited.
The Wideband Code Division Multiple Access is a third generation air interface, initiated in European Union research projects at the start of the 1990s. The standard emerged by the end of 1999 as part of the 3GPP standardization process. It was designed to support multiple simultaneous services with high quality services through an increased data rate. This research examines the properties and parameters of the WCDMA system to determine the feasibility of intercepting and exploiting this technology with known assets. It explores this possibility by looking at link analysis, adaptive antennas and co-channel interference canceling techniques to determine if the interception of WCDMA signals is possible.
Lieutenant Junior Grade, Hellenic Navy
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Cheng, Zhuo. "Hybrid Power Control in Time Division Scheduling Wideband Code Division Multiplex Access." Thesis, KTH, Kommunikationssystem, CoS, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-91097.

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With high date rates using Enhanced Uplink (EUL), a conventional signal to interference ratio (SIR) based power control algorithm may lead to a power rush due to self interference or incompatible SIR target [2]. Time division (TD) scheduling in Wideband Code Division Multiplex Access (WCDMA) is considered to be a key feature in achieving high user data rates. Unfortunately, power oscillation/peak is observed in time division multiplexing (TDM) at the transition between active and inactive transmission time intervals [1]. Therefore there is a need to revisit power control algorithms for different time division scheduling scenarios. The objective of power control in the context of this study is to minimize the required rise over thermal noise (RoT) for a given data rate, subject to the constraint that the physical layer control channel quality is sufficient (assuming that the dedicated physical control channel (DPCCH) SIR should not go below 3dB with a probability of at most 5%). Another goal is to minimize the local oscillation in power (power peaks) that may occur, for example due to transitions between active and inactive transmission time intervals. The considered hybrid power control schemes are: (1) non-parametric Generalized rake receiver SIR (GSIR) Inner Loop Power Control (ILPC) during active transmission time intervals + Received Signal Code Power (RSCP) ILPC during inactive transmission time intervals and (2) RSCP ILPC during active transmission time intervals + GSIR ILPC during inactive transmission time intervals. Both schemes are compared with pure GSIR and pure RSCP ILPC. Link level simulations with multiple users connected to a single cell show that: The power peak problem is obviously observed in GSIR + GSIR transmit power control (TPC), but in general it performs well in all time division scenarios studied. GSIR outperforms other TPC methods in terms of RoT, especially in the TU channel model. This is because it is good in combating instantaneously changed fading and accurately estimates SIR. Among all TPC methods presented, GSIR + GSIR TPC is best in maintaining the quality of the DPCCH channel. No power rush is observed when using GSIR + GSIR TPC. RSCP + RSCP eliminates the power peak problem and outperforms other TPC methods presented under the 3GPP Pedestrial A (pedA) 3km/h channel in terms of RoT. However, in general it is worse in maintaining the control channel’s quality than GSIR + GSIR TPC. GSIR + RSCP ILPC eliminates the power peak problem and out-performs GSIR power control in the scenario of 2 and 4 TDM high data rate (HDR) UE and 2 TDM HDR UE coexistence with 4 Code DivisionMultiplex (CDM) LDR UE, in the pedA 3km/h channel, in terms of RoT. However, the control channel quality is not maintained as well during inactive transmission time intervals. It is not recommended to use RSCP + GSIR TPC since it performs worst among these TPC methods for most of the cases in terms of RoT, even though it is the second best in maintaining the control channel quality. The power peak is visible when using RSCP + GSIR TPC. To maintain the control channel’s quality, a minimum SIR condition is always used on top of all proposed TPC methods. However, when there are several connected TDM HDR UEs in the cell, results indicates that it is challenging to meet the quality requirement on the control channels. So it may become necessary to limit the number of connected terminals in a cell in a time division scenario.
Med den höga datahastighet som Enhanced Uplink (EUL) medger kan en konventionell algoritm för effektkontroll baserad på signal to interference ratio (SIR) leda till effekthöjning beroende på självinterferens eller felaktigt SIR mål. Time division (TD) schedulering vid Wideband Code Division Multiple Access (WCDMA) anses vara en nyckelfunktion för att uppnå höga datahastigheter. I övergången mellan aktiv och inaktiv transmissionstidsintervall vid time division multiplexing (TDM) har effektoscillering/effektpeak observerats. Detta gör det nödvändigt att se över algoritmerna för effektkontroll vid olika scenarion av TD schedulering. Målet med effektkontrollen i denna studie är att minimera rise over thermal noise (RoT) för en given datahastighet givet begränsningen att kvaliteten på physical layer control channel är tillräcklig (beaktande att dedicated physical control channel (DPCCH) SIR inte understiger 3dB med en sannolikhet på som mest 5%). Ett annat mål är att minimera den lokala effektoscillationen (effektpeakar) som kan inträffa till exempel vid övergång mellan aktiv och inaktiv transmissionstidsintervall. De undersökta hybrida metoderna för effektkontroll är: (1) icke-parametrisk Generalized rake receiver SIR (GSIR) Inner Loop Power Control (ILPC) vid aktiv transmissionstidsintervall + Received Signal Code Power (RSCP) ILPC vid inaktiv transmissionstidsintervall och (2) RSCP ILPC under aktiv transmissionstidsintervall + GSIR ILPC under inaktiv transmissiontidsintervall. Båda metoderna jämförs med ren GSIR och ren RSCP ILPC. Länk nivå simulering med flera användare anslutna till en enda cell visar att: Problemet med effektpeakar observeras tydligt vid GSIR + GSIR transmit power control (TPC) men generellt sett presterar den bra i alla studerade TD scenarion. GSIR presterar bättre än andra TPC metoder beträffande RoT, speciellt i TU kanal modellen. Detta beror på att metoden är bra på att motverka momentant förändrad fading och med god precision estimerar SIR. Bland alla presenterade TPC metoder är GSIR + GSIR TPC den bästa på att behålla en god kvalitet på DPCCH kanalen. Ingen effekthöjning har observerats vid GSIR + GSIR TPC. RSCP + RSCP eliminerar problemet med effektpeakar och presterar bättre än andra TPC metoder presenterade under 3GPPs Pedestrial A (pedA) 3km/h kanal beträffande RoT. Dock är metoden generellt sett sämre på att behålla kontrollkanalens kvalitet än GSIR + GSIR TPC. GSIR + GSIR ILPC eliminerar problemet med effektpeakar och presterar bättre än GSIR power control i ett scenario med 2 och 4 TDM high data rate (HDR) UE och 2 TDM HDR UE tillsammans med 4 Code Division Multiplex (CDM) LDR UE i pedA 3km/h kanalen beträffande RoT. Dock kan inte kvaliteten på kontrollkanalen behållas i detta fall heller under inaktiv transmissionstidsintervall. Det är inte rekommenderat att använda RSCP + GSIR TPC eftersom den presterar sämst av alla TPC metoder beträffande RoT i de allra flesta fall. Till dess fördel är att den är den näst bästa på att behålla kvaliteten på kontrollkanalen. Effektpeakar har observerats när RSCP + GSIR TPC använts. För att behålla kontrollkanalens kvalitet används alltid en minimum SIR nivå ovanpå alla föreslagna TPC metoder. När det finns flera anslutna TDM HDR UEs i cellen indikerar resultaten att det är en utmaning att behålla kvalitetskraven på kontrollkanalen. På grund av detta kan det bli nödvändigt att begränsa antalet anslutna terminaler i en cell i ett TD scenario.
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Huynh, Jack, and Mattias Gylin. "Modelering av Wideband : Code Division Multiple Access." Thesis, Linköping University, Department of Electrical Engineering, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2845.

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Today wireless transmission of data is becoming more and more popular and the need for faster transmission rates is increasing. Since the bandwidth is limited it is important to try to use it to the fullest. CDMA is a technology that allows multiple accesses on the same frequency and time thus making it very bandwidth efficient. The CDMA technology was first introduced in the second generation’s cellular systems but has since then been improved and is reused in today’s 3G systems as Wideband CDMA. ISY is interested in getting a behavioural model of a W-CDMA system since they had developed a DSP processor called BBP1 and were thinking about adding W-CDMA support for it. Even though our system is not implemented on the BBP1 it should provide a good base for future implementations. This thesis project will describe the construction of a behavioural model of a W-CDMA system following the standard specified by 3GPP. The system simulates W-CDMA transmission and reception and has an optional channel used to simulate real world interference. The receiver uses a rake combiner to improve the performance of the system.

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Baey, Sébastien. "Contribution à la qualité de service d'une pile radio flexible pour la transmission de données multimédia en mode paquet sur interface radio UMTS WCDMA." Paris 11, 2004. http://www.theses.fr/2004PA112111.

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Cette thèse traite de l'intégration du trafic multimédia sur la voie montante de l'interface radio de l'UMTS. Le problème est abordé dans sa globalité, considérant à la fois les possibilités de partage de la ressource, une bonne caractérisation du trafic à transmettre et les possibilités ouvertes dans la norme UMTS. L'attention est plus particulièrement portée sur la vidéo MPEG4 et les données de type Internet. La première partie de la thèse dégage une approche du partage de ressource radio en mode WCDMA. Les performances du mécanisme de multiplexage de niveau couche physique avec qualité de transmission différenciée et l'impact du mécanisme d'adaptation de débit sont évalués. Cette analyse débouche sur la construction d'une fonction de coût pour l'estimation de la capacité cellulaire multiservice et la proposition d'une méthode d'équilibrage adaptatif de la qualité de transmission. La seconde partie de la thèse présente un nouveau modèle statistique pour le trafic vidéo MPEG4. Ce modèle consiste en une particularisation du processus DBMAP et permet d'évaluer analytiquement les performances de transmission à la traversée d'un système à file d'attente. La dernière partie de la thèse intègre l'ensemble de ces travaux pour aboutir à une stratégie d'ordonnancement coopérative multiplexant efficacement les paquets issus d'applications multimédia temps réel et non temps réel, dans le respect des contraintes d'intégrité et de retard. Une méthode analytique faisant appel à la théorie des files d'attente de type M/G/1 est fournie pour le calcul des retards subis par les paquets vidéo MPEG4 et les données lorsque cette stratégie est mise en œuvre au sein d'un réseau UMTS
This thesis deals with the integration of multimedia traffic on the uplink of the UMTS radio interface. The problem is tackled in its globality, considering jointly the resource sharing possibilities, a good characterization of the traffic to transmit and the possibilities opened in the UMTS standard. The attention is more particularly focused on MPEG4 video and data of the Internet type. The first part of the thesis provides an approach of radio resource sharing in WCDMA mode. The performances of the physical layer multiplexing mechanism with quality of transmission differentiation and the impact of the rate matching mechanism are evaluated. This analysis serves as a basis for the construction of a cost function for estimating the multiservice cellular capacity and the proposition of a quality of transmission adaptive balancing method. The second part of the thesis presents a new statistical model for MPEG4 video traffic. This model consists in a customization of the DBMAP process and allows evaluating the queueing performances analytically. The last part of the thesis integrates this set of works yielding a cooperative scheduling strategy that efficiently multiplexes the packets generated by real time and non real time multimedia applications while respecting the integrity and delay constraints. An analytical method based on M/G/1 type queueing systems theory is given for computing the delays incurred by MPEG4 video and data packets when this strategy is implemented in a UMTS network
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Fang, Sher Jiun. "Complementary metal-oxide-semiconductor frequency conversion techniques for wideband code division multiple access /." Thesis, Connect to this title online; UW restricted, 2003. http://hdl.handle.net/1773/6114.

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Books on the topic "Wideband Code Division Multiple Access (WCDMA)"

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Wideband TDD: WCDMA for the unpaired spectrum. Chichester: Wiley, 2004.

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Adaptive WCDMA: Theory and practice. New York: John Wiley & Sons, 2003.

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WCDMA design handbook. Cambridge: Cambridge Univeristy Press, 2005.

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Chitrapu, Prabhakar. Wideband TDD. New York: John Wiley & Sons, Ltd., 2005.

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Ramjee, Prasad, ed. Wideband CDMA for third generation mobile communications. Boston: Artech House, 1998.

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Holma, Harri. WCDMA for UMTS: HSPA evolution and LTE. 5th ed. Hoboken: Wiley, 2010.

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1945-, Brodersen Robert W., ed. Low-power CMOS wireless communications: A wideband CDMA system design. Boston: Kluwer Academic Publishers, 1998.

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Harte, Lawrence. Introduction to Wideband Code Division Multiple Access (WCDMA). Althos, 2004.

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Chitrapu, Prabhakar. Wideband TDD: WCDMA for the Unpaired Spectrum. Wiley & Sons, Incorporated, John, 2007.

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Hernandez, Marco Antonio. Space-Time Multiuser Receivers for Wideband Code Division Multiple Access. Delft Univ Pr, 2002.

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Book chapters on the topic "Wideband Code Division Multiple Access (WCDMA)"

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Aksoy, Sencer, and Osman Özkaraca. "Optimization in Wideband Code-Division Multiple Access Systems with Genetic Algorithm-Based Discrete Frequency Planning." In Trends in Data Engineering Methods for Intelligent Systems, 654–68. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-79357-9_61.

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Wang, Ju, and Jonathan C. L. Liu. "Advances of Radio Interface in WCDMA Systems." In Encyclopedia of Multimedia Technology and Networking, Second Edition, 9–14. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-60566-014-1.ch002.

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Recent years have witnessed the rapid progress in handheld devices. This has resulted in a growing number of mobile phones or PDAs that have a built-in camera to record still pictures or live videos. Encouraged by the success of second generation cellular wireless networks, researchers are now pushing the 3G standard to support a seamless integration of multimedia data services. One of the main products is WCDMA (Holma & Toskala, 2001), short for wideband code division multiple access. WCDMA networks have 80 million subscribers in 46 countries at the time of this writing. WCDMA can be viewed as a successor of the 2G CDMA system. In fact, many WCDMA technologies can be traced back to the 2G CDMA system. However, WCDMA air interface is specifically designed with envision to support real time multimedia services. To name some highlights, WCDMA: • Supports both packet-switched and circuitswitched data services. Mobile best-effort data services, such as Web surfing and file downloads, are available through packet service. • Has more bandwidth allocated for downlink and uplink than the 2G systems. It uses a 5 MHz wide radio signal and a chip rate of 3.84 mcps, which is about three times higher than CDMA2000. • Support a downlink data rate of 384 kbps for wide area coverage and up to 2 Mbps for hot-spot areas, which is sufficient for most existing packet-data applications. WCDMA Release 5 (Erricson, 2004) adopts HSDPA (High-speed downlink packet access), which increases peak data rates to 14 Mbps in the downlink. To achieve high data rate, WCDMA uses several new radio interface technologies, including (1) shared channel transmission, (2) higher-order modulation, (3) fast link adaptation, (4) fast scheduling, and (5) hybrid automatic-repeat-request (HARQ). These technologies have been successfully used in the downlink HSDPA, and will be used in upcoming improved uplink radio interface in the future. The rest of this article will explain the key components of the radio interface in WCDMA.
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Kashayp, Katyayani, Kandarpa Kumar Sarma, and Manash Pratim Sarma. "Design of Logistic Map-Based Spreading Sequence Generation for Use in Wireless Communication." In Next Generation Wireless Network Security and Privacy, 81–121. IGI Global, 2015. http://dx.doi.org/10.4018/978-1-4666-8687-8.ch003.

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Spread spectrum modulation (SSM) finds important place in wireless communication primarily due to its application in Code Division Multiple Access (CDMA) and its effectiveness in channels fill with noise like signals. One of the critical issues in such modulation is the generation of spreading sequence. This chapter presents a design of chaotic spreading sequence for application in a Direct Sequence Spread Spectrum (DS SS) system configured for a faded wireless channel. Enhancing the security of data transmission is a prime issue which can better be addressed with a chaotic sequence. Generation and application of chaotic sequence is done and a comparison with Gold sequence is presented which clearly indicates achieving better performance with simplicity of design. Again a multiplierless logistic map sequence is generated for lower power requirements than the existing one. The primary blocks of the system are implemented using Verilog and the performances noted. Experimental results show that the proposed system is an efficient sequence generator suitable for wideband systems demonstrating lower BER levels, computational time and power requirements compared to traditional LFSR based approaches.
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Conference papers on the topic "Wideband Code Division Multiple Access (WCDMA)"

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Sharma, Sanjay Kumar, and S. Naseem Ahmad. "Suppression of Multiple Access Interference (MAI) in Wideband Code Division Multiple Access (WCDMA)." In 2007 IFIP International Conference on Wireless and Optical Communications Networks. IEEE, 2007. http://dx.doi.org/10.1109/wocn.2007.4284174.

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Oh, Yong-il, Chung Sang Lyu, Seong Teak Oh, and Jin Young Kim. "Compatibility Analysis between Wideband Code Division Multiple Access (WCDMA) Service and Global Mobile Personal Communication by Satellite (GMPCS)." In 2008 10th International Conference on Advanced Communication Technology. IEEE, 2008. http://dx.doi.org/10.1109/icact.2008.4493742.

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Shahzad, Kashif, and Azhar Hussain. "Power aware implementation of wideband code division multiple access (WCDMA) based system for mobile consumer devices in ad hoc settings." In 2013 International Conference on Emerging Technologies (ICET). IEEE, 2013. http://dx.doi.org/10.1109/icet.2013.6743544.

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