DSSS/MCM system performance in a Doppler spread channel

Thad B. Welch, Rodger E. Ziemer

Research output: Contribution to conferencePaperpeer-review

3 Scopus citations

Abstract

There has been a great deal of recent interest in the use of direct sequence spread spectrum (DSSS) in combination with multicarrier modulation (MCM). Although the proposed system implementations in the literature vary, all of these systems share the functionality of DSSS, MCM, and some form of a branch combiner at the receiver. We investigate the performance of such a system transmitting through a Doppler spread channel. In Doppler spread fading, the proposed system performance exhibits an irreducible bit error probability (BEP) even for the single user case. Dramatic performance improvements can be realized with the use of an ideal maximal ratio combiner (MRC). A system utilizing an equal gain combiner (EGC) is analyzed. Finally, we compare the analytic results with the results from several computer simulations.

Original languageEnglish
Pages587-591
Number of pages5
StatePublished - 1997
EventProceedings of the 1997 MILCOM Conference. Part 2 (of 3) - Monterey, CA, USA
Duration: 3 Nov 19975 Nov 1997

Conference

ConferenceProceedings of the 1997 MILCOM Conference. Part 2 (of 3)
CityMonterey, CA, USA
Period3/11/975/11/97

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