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Wireless location in CDMA cellular radio systems

  • 作者: Caffery, James J.
  • 出版: Boston : Kluwer Academic ©2000.
  • 稽核項: 1 online resource (xiii, 189 pages) :illustrations.
  • 叢書名: The Kluwer international series in engineering and computer science ;SECS 535
  • 標題: Radiocommunications mobiles. , Automatic tracking. , engineering , computertechnieken , Cell phone systems. , computer techniques , Poursuite automatique. , computer networks , Accès multiple par différence de code. , Radio. , elektrotechniek , Engineering (General) , TECHNOLOGY & ENGINEERING , computernetwerken , TECHNOLOGY & ENGINEERING Radio. , Téléphonie cellulaire. , Mobile communication systems. , Electronic books. , TECHNOLOGY & ENGINEERING Mobile & Wireless Communications. , Llibres electrònics. , Mobile & Wireless Communications. , Code division multiple access. , Techniek (algemeen) , electrical engineering
  • ISBN: 0306473291 , 9780306473296
  • ISBN: 0792377036 , 9780792377030 , 6610208093 , 9786610208098
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  • 附註: Includes bibliographical references (pages 165-183) and index. Cover -- Table of Contents -- Foreword -- Preface -- Chapter 1. Introduction -- 1. Applications -- 2. History of Wireless Location Systems -- 3. Overview -- 4. Outline -- Chapter 2. System and Channel Models -- 1. Channel Propagation Model -- 2. Signaling System Model -- Chapter 3. Location Methods and Impairments -- 1. Location Methods -- 2. Advantages/Disadvantages of Location Methods -- 3. Sources of Location Error -- 4. Summary -- Chapter 4. Radiolocation Algorithms -- 1. Estimation of Location Parameters -- 2. Radiolocation Algorithms -- 3. Measures of Location Accuracy -- 4. Summary -- Chapter 5. Performance of Location in CDMA Systems -- 1. Radiolocation System -- 2. Time-based Location Algorithms -- 3. Propagation Models -- 4. Simulations -- 5. Summary -- Chapter 6. TOA Estimation in Multiple-Access Interference -- 1. Effects of Multiple-Access Interference -- 2. Mitigation of Multiple-Access Interference -- 3. Summary -- Chapter 7. Analysis and Mitigation of NLOS Effects -- 1. Analysis of NLoS Effects -- 2. NLoS Mitigation Techniques -- 3. Summary -- Chapter 8. Provisions for Location in Wireless Standards -- 1. AMPS -- 2. CDMA -- 3. TDMA -- 4. Summary -- Chapter 9. Conclusions & Future Directions -- 1. Summary of Book -- 2. Suggestions for Future Research -- Appendices -- A- Derivation of RnT(, e) -- B ... Kalman Filter Equations -- C ... Derivation of the Cramer-Rao Bound -- D ... Derivation of the GWRLS Algorithm.
  • 摘要: The tremendous growth of the wireless communications industry demands both the extension of certain landline services to wireless services as well as entirely new services that are unique to wireless systems. Many of these applications, such as Emergency-911 (E-911), fraud detection, location-sensitive billing, and Intelligent Transportation Systems (ITS), will, in fact, require the deployment of accurate wireless position location systems, particularly in the light of the 1996 FCC report and order which requires location accuracy to within 125 m by October, 2001. Wireless Location in CDMA Cellular Radio Systems investigates methods for wireless location in CDMA networks and analyses their performances. Techniques for measuring location parameters (AoAs, ToAs, etc.) are presented along with algorithms for calculating position from these parameters. Several impairments to accurate location are covered and analyzed including multipath propagation, non-line-of-sight propagation, and multiple-access interference. Many of the topics in this book are also applicable to FDMA- and TDMA-based communication networks.
  • 電子資源: https://dbs.tnua.edu.tw/login?url=https://search.ebscohost.com/login.aspx?direct=true&scope=site&db=nlebk&AN=76112
  • 系統號: 005300500
  • 資料類型: 電子書
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With the increasing market penetration of cellular telephones, the number of E-911 calls placed by cellular telephones has grown cons- erably. This growth in E-911 calls led to a 1996 FCC ruling requiring that all cellular, PCS, and SMR licensees provide location information for the support of E-911 safety services. The provision of such location information is to be implemented in two phases. Phase I, whose deadline has already been passed, requires that wireless carriers relay the caller’s telephone number along with location of the cell site and/or sector se- ing the call, to a designated Public Safety Answering Point (PSAP). This information allows the PSAP to return the call if disconnected. Phase II, to be completed by October 1, 2001, is much more stringent and requires that the location of an E-911 caller be determined and reported with an rms location accuracy of 125 m in 67% of the cases. The applications of wireless location technology extend well beyond E-911 services. Location information can be used by cellular telephone operators themselves for more effective management of their radio - sources, so as to achieve greater spectral efficiencies. Resource m- agement algorithms such as hand-offs between cell sites, channel assi- ments, and others can all benefit from subscriber location information. Location information obtained from vehicular based cellular telephones can be used as an input to Intelligent Transportation Systems (ITS), and in particular traffic management and traveler information systems.
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