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Antenna diversity combining and finite-tap decision feedback equalization for high-speed data transmission

Authors Ng, John C.L. HKUST affiliated (currently or previously).
Letaief, Khaled Ben View this author's profile
Murch, Ross David View this author's profile
Issue Date 1998
Source IEEE journal on selected areas in communications , v.16, (8),1998, Oct. p. 1367-1375
Summary The next-generation wireless communication systems are expected to support high speed data transmission. However, associated with high transmission rates is the problem of multipath inter-symbol interference (ISI) due to frequency-selective fading. Decision feedback equalization (DFE) and antenna diversity combining are two practical techniques for combating multipath ISI. In this paper, we investigate the performance of diversity combining together with DFE under various numbers of antenna branches and equalization taps in a quasi-stationary frequency-selective fading environment with AWGN and co-channel interference (CCI) by means of simulations. We consider joint optimization combining and power selection diversity combining. We simulate the combiner using QPSK modulation with up to 4 antenna branches. Our results show that using antenna diversity and DFE with joint optimization combining provides performance improvement with lower computational complexity compared to that of using either DFE or diversity combining alone for combating ISI.
ISSN 0733-8716
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Language English
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