Wireless Personal Communications

The wireless industry is growing at a phenomenal rate. Cellular subscribers are increasing at a rate of 45% per year, the market for wireless local loop service is growing at a rate of 42%, and the wireless local area network market is growing at a rate of 61 %. This growth and potential for future growth has motivated companies to commit $20 billion in obtaining 90 MHz of PCS spectrum during the recent FCC auctions in the United States. Obviously spectrum is a costly, but critical, resource. Efficient utilization of this resource is essential for profitable wireless service. To meet this challenge, researchers in wireless communications are tenaciously developing more spectrally efficient modulation techniques, planning tools for efficient communication system layout, and digital signal processing techniques for more robust communications. The papers and lectures presented in this book were originally given at the Sixth Annual Virginia Tech Symposium on Wireless Personal Communications and cover a broad range of topics in wireless communications. The majority of the papers are relevant to creating higher capacity (spectrally efficient) systems with greater coverage. Topics include adaptive antenna array measurements and algorithm comparisons, Cellular Digital Packet Data deployment guidelines, speech coding techniques, wireless system design methodology, and propagation measurements in hostile or previously unexplored channels.

Presenting a broad range of topics in wireless communications, the majority of the chapters in this text are relevant to creating higher capacity (spectrally efficient) systems with greater coverage.

I Novel Wireless Systems and Hardware.- 1. Cellemetrysm - Telemetry Via Cellular.- 2. Smart Antenna Testbed for Mobile Wireless Systems.- 3. A Practical Perspective on Cellular Digital Packet Data (CDPD) Systems.- 4. Low Cost BPSK 2.4 GHz Radio For Wireless LAN.- 5. Error Floor of ?/4 DQPSK in Mobile Radio Channels.- 6. Real-Time Implementation of QCELP Vocoder for Speech and Data in CDMA Cellular System Using TMS320C50 Fixed Point DSP Chip.- II Cdma and Dsp Techniques.- 7. Spread-Spectrum Packet Radio Using Narrowband Headers.- 8. Congestion Relief on Power-Controlled CDMA Networks.- 9. A Simulation Study of Interference and SIR in Integrated Voice/Data Wireless DS-CDMA Networks.- 10. Comparative Study of Adaptive Antenna Arrays in CDMA Communication Systems.- 11. Cochannel Receivers for CPM Signals Based Upon the Laurent Representation.- III Propagation and System Design Issues.- 12. Site Survey for Wireless Communications Evaluation for New York Mercantile Exchange.- 13. Measurement of RF Propagation Into Concrete Structures Over the Frequency Range 100 MHz to 3 GHz.- 14. Interference from Wireless Devices into Network Equipment Inside COs Between 450 and 914 MHz.- 15. Fading Phenomena in the Wireless Environment.- 16. Transmitter Timing Optimization in Digital Simulcast Networks.- 17. The Prediction of the Performance of Diversity Systems by Modal Analysis and FDTD.- 18. The Spectrum Management Process: How it is Working to Support the New Wireless Services.- 19. Analysis of Eigenstructure Technique for DSSS Synchronization.- 20. Future Wireless Challenges for Integrated Circuits.