Error Rate Analysis of Coherent and Differential Multiphase Parallel Combinatorial Spread Spectrum Systems

Shigenobu SASAKI, Hisakazu KIKUCHI, Jinkang ZHU, Gen MARUBAYASHI

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Summary :

This paper investigates the error rate performance of parallel combinatorial spread spectrum (PC/SS) communicaion systems that use coherent and differential multiphase modulation: multiphase parallel combinatorial spread spectrum (MPC/SS) communication systems. The PC/SS systems are multicode SS systems based on orthogonal pseudo-noise (PN) sequences. Data is transmitted by delivering a combination of multiple PN sequences among a set of pre-assigned PN sequences. In the MPC/SS systems, every PN sequence on transmission is modulated by q-ary coherent or differential phase shift keying (PSK). Symbol error rate (SER) and average bit error rate (BER) in coherent and differential MPC/SS systems are investigated. The BER comparison between the MPC/SS systems and simple multicode SS systems with q-ary coherent and differential PSK is also presented. Numerical results show that the MPC/SS systems are superior to the conventional q-ary PSK systems, if they have equal spectral efficiency.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E80-A No.7 pp.1196-1203
Publication Date
1997/07/25
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Special Section PAPER (Special Section on Multi-dimensional Mobile Information Network)
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