Literatura académica sobre el tema "Wireless local loop"
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Artículos de revistas sobre el tema "Wireless local loop":
Yi-Bing Lin. "The wireless local loop". IEEE Potentials 16, n.º 3 (agosto de 1997): 8–10. http://dx.doi.org/10.1109/mp.1997.609883.
Cotanis, Nicolae y Bijan Jabbari. "Wireless local loop radio systems". Computer Networks 31, n.º 4 (febrero de 1999): 343–52. http://dx.doi.org/10.1016/s0169-7552(98)00271-2.
Garg, V. K. y E. L. Sneed. "Digital wireless local loop system". IEEE Communications Magazine 34, n.º 10 (1996): 112–15. http://dx.doi.org/10.1109/35.544332.
Jhunjhunwala, Ashok, Devendra Jalihal y K. Giridhar. "Wireless in Local Loop—Some Fundamentals". IETE Journal of Research 46, n.º 6 (noviembre de 2000): 421–33. http://dx.doi.org/10.1080/03772063.2000.11416187.
Noerpel, A. R. y Yi-Bing Lin. "Wireless local loop: architecture, technologies and services". IEEE Personal Communications 5, n.º 3 (junio de 1998): 74–80. http://dx.doi.org/10.1109/98.683743.
Har, Dongsoo, Ce Xu y Howard H. Xia. "Propagation modelling for wireless local loop channel". International Journal of Communication Systems 13, n.º 3 (2000): 231–41. http://dx.doi.org/10.1002/1099-1131(200005)13:3<231::aid-dac428>3.0.co;2-q.
Jhunjhunwala, Ashok y Bhaskar Ramamurthi. "Wireless in Local Loop: Some Key Issues". IETE Technical Review 12, n.º 5-6 (septiembre de 1995): 309–14. http://dx.doi.org/10.1080/02564602.1995.11416547.
Manoj, B. S., Christo Frank D y C. Siva Ram Murthy. "Throughput enhanced wireless in local loop (TWiLL)". ACM SIGMOBILE Mobile Computing and Communications Review 7, n.º 1 (enero de 2003): 95–116. http://dx.doi.org/10.1145/881978.882004.
Kibati, Mugo y Donyaprueth Krairit. "The wireless local loop in developing regions". Communications of the ACM 42, n.º 6 (junio de 1999): 60–66. http://dx.doi.org/10.1145/303849.303863.
Lin, Yi-Bing. "PBX based mobility manager for wireless local loop". International Journal of Communication Systems 13, n.º 3 (2000): 303–16. http://dx.doi.org/10.1002/1099-1131(200005)13:3<303::aid-dac435>3.0.co;2-s.
Tesis sobre el tema "Wireless local loop":
Charles, Simon Alex. "HiperLan 2 for the wireless local loop". Thesis, University College London (University of London), 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.410020.
Lee, Richard Wai Shing. "Performance analysis of a quasi-synchronous DS-CDMA wireless local loop system". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq29412.pdf.
Li, Tianshi. "A hybrid frequency modulated CDMA communication system". Thesis, This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-11182008-063107/.
Tsai, Hsien-Ming y 蔡憲明. "Design and Performance of Wireless Local Loop". Thesis, 2002. http://ndltd.ncl.edu.tw/handle/80266105331589156962.
國立交通大學
資訊工程系
90
Wireless local loop (WLL) provides two-way communication services to stationary or near-stationary subscribers via air interface. Compared with the wireline local loop, WLL offers advantages such as ease of installation and deployment, and concentration of resources. Resource allocation is an important issue for WLL design and performance. According to radio coverage of base stations (i.e.,cell), this dissertation studies three types of WLL cell structures: a basic WLL, the WLL with cell overlay, and the WLL with cell overlap. In the basic WLL, there are non-overlay and non-overlap cells. In the WLL with cell overlay, a macrocell overlays with several microcells. In the WLL with cell overlap, cells are partially overlapping with each other. Analytic models are proposed to investigate their system performance. All of these models are validated against simulation experiments. Based on these models, we prove that call blocking/loss of these WLL networks is not affected by the call holding time distributions, but is only dependent on the mean call holding times. Furthermore, new channel allocation schemes are proposed to reduce call loss and handoff for the WLL with cell overlay and the WLL with cell overlap, respectively. Moreover, we illustrate some design guidelines for WLL resource allocation to avoid bottleneck resource.
Huang, Hsin-Jung y 黃信榮. "Wireless Local Loop Based on Wideband CDMA Technology". Thesis, 2000. http://ndltd.ncl.edu.tw/handle/40327775324358490570.
國立臺灣大學
電信工程學研究所
88
The wireless local loop (WLL) is a local telephony system taking advantage of the wireless technology, rather than the wireline connection, to build the connection. In countries where the telophony system is not yet common, islands, and even highly developed areas, it is fast and cost-effective to deploy the WLL system for the subscribers to access the PSTN. We expand the aforementioned original concept of WLL as that not only the vocal services but also the high-rate data services are provided. And the terminals do not need to be fixed and a low mobility should be supported. Through this WLL, in order to provide a large capacity and high service quality, as good as wireline system, the wideband CDMA technology is an excellent choice. The 3rd Generation Partnership Project (3GPP) system is taken as the basis of our research. Based on the 3GPP system, we would like to give an appropriate design for the WLL, in the criterion that the capacity is maximized. The capacity formulas for the reverse link (RL) and forward link (FL) Erlang capacity are derived. According to the derived capacity, a systematic method, which is actually a semi-analytical method, is taken to analyze the impacts of the components that may affect the capacity. Impacts of RAKE receiver and power control are investigated, and according to the resulting capacity we design the WLL system. For the WLL providing vocal services, the suggested power control rate is 250 Hz while the 3GPP system has a 1500-Hz power control; the RAKE receiver is suggested to be 3-finger. For the WLL providing high-rate data services, the suggested power control rate is 400 Hz and th receiver should be a 3-finger RAKE.
Chang, Tian-Tsai y 張天財. "WRMON: A MONITORING SYSTEM BASED ON THE WIRELESS LOCAL LOOP". Thesis, 2002. http://ndltd.ncl.edu.tw/handle/02380837735594270578.
國立東華大學
資訊工程學系
90
Networks have been in prevalent use for over a decade now. It has been the core technology enabling distributed computing, and networking for the desktop, server and backbone over the years. From the corporations to the homes, networks have changed the style of how people work and live. Recently, more and more researches on the wireless network and bring the excellent commercial products. The wireless networks have replaced gradually the model of current networks. Although the wireless networks arise a splendid, there are still some insufficient and defective factors. On account of bandwidths limits, high access latency, limit of transmissible range, security, and regular disconnection in the wireless network environment, management and monitoring is inevitable for network manager. In this thesis, we develop a network manager system –WRMON, where WRMON stands for “Wireless Remote Monitoring”. This system includes WRMON detectors and multiform wireless network management applications. The WRMON detectors are important tools for remotely examining and classifying network traffic patterns. The WRMON management applications retrieve WRMON MIBs private-defined and used in IEEE 802.11 wireless LAN. From the WRMON system, the network managers could easily monitor the wireless networks and get more predictions before the wireless network got catastrophes. This thesis contribute one idea of constructing the software Access Point with embedded WRMON detector for monitoring, analysis, pre-detection. We also extended the RMON MIBs and implemented the WRMON MIBs for gathering traffics on the wireless local loop. After applying the WRMON system on the WLL and constructing the environment, we do providing three methods to develop the WRMON management applications. We also test and construct the devices from the wireless nodes to management application on the environment.
Chang, Ching-Chung y 張正忠. "The application of channel model in wireless local loop environment". Thesis, 2001. http://ndltd.ncl.edu.tw/handle/11095485631992374780.
中原大學
電子工程研究所
89
In wireless communication environment, we need a simple and effective software propagation model that can simulate and predict the quality of received signals. The model can help to evaluate and improve the service qualities of the WCDMA/WLL systems. In this thesis, we conduct a series of propagation measurements at Lung-Yuan areas. Mean path loss and delay spread are measured in several selected scenarios. Then we apply the far-near echoes model to develop a statistical propagation channel that can fit use’s local environments. In addition, modeling parameters are extracted and adjusted for better prediction in the specified areas. The mean path loss and rms delay spread obtained by simulation are compared with those obtained by measurement the differences are no more than 15%. The results show good agreement between simulation and measurement data. Therefore, by using this proposed propagation channel model with appropriate model parameters, we can predict the quality and performance of the WLL system conveniently and efficiently.
Lin, Yi-Szu y 林義斯. "The Design and Implementation of 3.4GHz Transceiver for Wireless Local Loop". Thesis, 2002. http://ndltd.ncl.edu.tw/handle/85112211187452373891.
國立東華大學
電機工程學系
90
The Wireless Local Loop (WLL) could not only provide the instant establishment, easy maintenance and mobility for users but also has the same quality as traditional phone. Personal Access Communication System (PACS) is one of the technologies for WLL and has become the standard of North American communication service since 1996. Because of the microcell architecture, its frequency reuse efficiency is higher. Consequently, its capacity is more than other cellular phone systems. Utilizing computer simulation during the design period, we can promote the reliability of system and reduce the developing time. This thesis will use Symphony, the system design part of the Serenade 8.5 that was developed by Ansoft corp., to design a radio frequency circuit for 3.4GHz WLL transceiver based on PACS. In order to reduce any differences between simulation and implementation, we refer to some specifications of Monolithic Microwave Integrated Circuit (MMIC) and then adjust all parameters that were constructed by Symphony. This circuit has already finished. The test results are as follows: Transmitter’s Error Vector Magnitude (EVM) is 5.93 % rms. Receiver’s Bit Error Rate is 2.5E-04, meanwhile its sensitivity is -95dBm. All results meet our requirements.
Kibati, Mugo y Donya Krairit. "Wireless Local Loop in Developing Regions: Is It Too Soon For Data?" 1999. http://hdl.handle.net/1721.1/1486.
Chen, Fu-Ming y 陳福明. "An Analysis of Coverage and Spectral Efficiency for Wideband-CDMA Wireless Local Loop". Thesis, 1999. http://ndltd.ncl.edu.tw/handle/70024528129638328840.
元智大學
電機與資訊工程研究所
87
Coverage and spectrum efficiency are the criteria for evaluation the performance of radio transmission technologies. In this thesis, coverage and spectrum efficiency of wideband code division multiple access (WCDMA)/Wireless local loop (WLL) are analyzed. The coverage of WCDMA/WLL with the service reliability of 90% in urban, suburban and rural area is predicted. The channel is considered to be Lognormal shadow fading with a standard deviation of 8dB. The influence of some parameters such as number of users, adjacent cell interference, directivity of antenna, height of antenna, transmitter power, and imperfect power control on the coverage variation are numerically evaluated. The capacity and spectrum efficiency of WCDMA/WLL with a specified outage probability and power control error are also investigated. The variation of is closely approximated by a log-normal probability density. The numerical results show that the coverage can be increased by using directional antenna and higher transmitter power, but decreased with the increasing system capacity, adjacent cell interference and power control error. The spectrum efficiency of WCDMA/WLL increases with decreasing variation of and increasing antenna directivity for 2% outage probability and the specified bit error rate ( for data service and for speech service). Furthermore, it is shown that the trends of analytical results of the spectral efficiency are similar with the simulations obtained from ARIB and EASI standards.
Libros sobre el tema "Wireless local loop":
William, Webb. Introduction to wireless local loop. Boston: Artech House, 1998.
Schulz, Raymond C. Wireless technologies and PCS applications: Competition for the local loop. [Town & Country, MO: GLA International, 1994.
Pandya, Raj. Introduction to WLLS: Application and deployment for fixed and broadband services. Hoboken, NJ: John Wiley, 2004.
Lee, Richard Wai Shing. Performance analysis of a quasi-synchronous DS-CDMA wireless local loop system. Ottawa: National Library of Canada = Bibliothèque nationale du Canada, 1999.
Vandenameele, Patrick. Space division multiple access for wireless local area networks. New York: Kluwer Academic Publishers, 2002.
Pandya, Raj. Introduction to WLLs. New York: John Wiley & Sons, Ltd., 2004.
Pandya, Raj. Introduction to WLLS: Application and deployment for fixed and broadband services. Piscataway, NJ: IEEE Press, 2004.
Vandenameele, Patrick. Space division multiple access for wireless local area networks. Boston: Kluwer Academic Publishers, 2001.
Stavroulakis, Peter, ed. Wireless Local Loops. Chichester, UK: John Wiley & Sons, Ltd, 2001. http://dx.doi.org/10.1002/0470841877.
Matthews, John y Adrian May. Wireless Local Loop (Ovum Report). Ovum Ltd, 1998.
Capítulos de libros sobre el tema "Wireless local loop":
Walke, Bernhard. "Wireless-Local-Loop-Systeme". En Mobilfunknetze und ihre Protokolle, 281–89. Wiesbaden: Vieweg+Teubner Verlag, 2000. http://dx.doi.org/10.1007/978-3-322-92666-1_8.
Walke, Bernhard. "Wireless-Local-Loop-Systeme". En Mobilfunknetze und ihre Protokolle 2, 277–85. Wiesbaden: Vieweg+Teubner Verlag, 2001. http://dx.doi.org/10.1007/978-3-663-05906-6_8.
Walke, Bernhard. "Wireless-Local-Loop-Systeme". En Mobilfunknetze und ihre Protokolle, 245–53. Wiesbaden: Vieweg+Teubner Verlag, 1998. http://dx.doi.org/10.1007/978-3-663-05631-7_7.
Prasad, Ramjee y Chandan Kumar Chatterjee. "Overview of Wireless in Local Loop". En Wireless Communications, 265–90. Boston, MA: Springer US, 1997. http://dx.doi.org/10.1007/978-1-4757-2604-6_14.
Meehan, J. P. y A. D. Fagan. "Precoding in the Digital Wireless Local Loop". En Broadband Wireless Communications, 104–9. London: Springer London, 1998. http://dx.doi.org/10.1007/978-1-4471-1570-0_10.
Erdogan, Alper T., Ayman F. Naguib y Arogyaswami Paulraj. "The Effect of Directional Antennas in CDMA Wireless Local Loop Systems". En Wireless Personal Communications, 71–79. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4615-5491-2_8.
Uhlig, R. P. "Application of CDMA Technology to Wireless Local Loop Service". En IFIP Advances in Information and Communication Technology, 339–51. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-0-387-34985-5_25.
Erdogan, Alper T., Ayman F. Naguib y Arogyaswami Paulraj. "The Effect of Directional Antennas in CDMA Wireless Local Loop Systems". En The Kluwer International Series in Engineering and Computer Science, 71–79. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4613-1331-1_8.
Mutafungwa, Edward y Kamugisha Kazaura. "Assessing Opportunities for Broadband Optical Wireless Local Loops in an Unbundled Access Network". En Mobile Data Access, 34–44. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/3-540-46669-x_4.
Un, Kai-Fai, Pui-In Mak y Rui P. Martins. "An Open-Loop Multiphase Local-Oscillator Generation Technique". En Low Power Emerging Wireless Technologies, 297–312. CRC Press, 2017. http://dx.doi.org/10.1201/b13870-12.
Actas de conferencias sobre el tema "Wireless local loop":
Null. "The wireless local loop". En IEE Workshop on Microwave and Millimetre-Wave Communications - the Wireless Revolution. IEE, 1995. http://dx.doi.org/10.1049/ic:19951435.
Westman, T. "Wireless local loop (WLL) based on DCS1800 technology". En IEE Colloquium on Local Loop Fixed Radio Access. IEE, 1995. http://dx.doi.org/10.1049/ic:19951475.
Pulley, D. R. "The use of wideband time controlled DS-CDMA for wireless local loop". En IEE Colloquium on Local Loop Fixed Radio Access. IEE, 1995. http://dx.doi.org/10.1049/ic:19951476.
Jin Man Kim, Kwang Rok Chang y Kyung Jae Kim. "CDMA network planning for wireless local loop application". En Proceedings of APCC/OECC'99 - 5th Asia Pacific Conference on Communications/4th Optoelectronics and Communications Conference. IEEE, 1999. http://dx.doi.org/10.1109/apcc.1999.824943.
Wassell, I. J. "Is DECT suitable for the wireless local loop?" En 5th IEE Conference on Telecommunications. IEE, 1995. http://dx.doi.org/10.1049/cp:19950114.
Clifton, J. C. "RF transceiver architectures for wireless local loop systems". En IEE Colloquium on RF and Microwave Circuits for Commercial Wireless Applications. IEE, 1997. http://dx.doi.org/10.1049/ic:19970172.
Kiddle, P. "Rural and urban wireless local loop - the DECT potential". En 5th IEE Conference on Telecommunications. IEE, 1995. http://dx.doi.org/10.1049/cp:19950113.
Xia Gao, Xiaohong Quan, R. Jain, T. Kawahara y G. Powell. "Wireless local loop at the bottom of the pyramid". En 2004 IEEE Wireless Communications and Networking Conference (IEEE Cat. No.04TH8733). IEEE, 2004. http://dx.doi.org/10.1109/wcnc.2004.1311588.
Yu, Jian y Yu Yan. "The study of Novel Local-loop Particle Filter". En 2011 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC). IEEE, 2011. http://dx.doi.org/10.1109/csqrwc.2011.6037045.
Wassell, I. J. "The use of wireless local loop (WLL) to offer a mobile service". En IEE Colloquium on Wireless Technology. IEE, 1996. http://dx.doi.org/10.1049/ic:19961122.