IMPLEMENTATION AND PERFORMANCE RESULTS FOR TRELLIS DETECTION OF SOQPSK

• Main Author: Geoghegan, Mark
• Other Authors: Nova Engineering Inc.
• Language: en_US
• Published: International Foundation for Telemetering 2001
• Subjects: SOQPSK; Trellis Detection; Spectral Efficiency; Power Efficiency
• Online Access: http://hdl.handle.net/10150/607607; http://arizona.openrepository.com/arizona/handle/10150/607607

International Telemetering Conference Proceedings / October 22-25, 2001 / Riviera Hotel and Convention Center, Las Vegas, Nevada === Shaped Offset QPSK (SOQPSK), as proposed and analyzed by Terrance Hill, is a family of constant envelope waveforms that is non-proprietary and exhibits excellent spectral containment and detection efficiency. Results using a conventional coherent OQPSK demodulator without any special pulse shaping to recover the SOQPSK signal have been previously presented. This paper describes a trellis detector for SOQPSK-A and SOQPSK-B that provides superior detection performance, as compared to a traditional OQPSK detector, by accounting for the pulse shaping. Analytical error performance bounds, implementation of the trellis demodulator, and computer simulation results are presented.