Abstract
Adaptive equalization at the mobile in conjunction with diversity transmission at the base station can combat the adverse effects of both frequency-selective and frequency-nonselective fading at the mobile receiver. This is suggested as an alternative to diversity combining at the mobile. Thus, a substantial saving in the mobile receiver's implementation cost and power consumption is expected. In this paper, a time-domain multiple access system with two transmitting antennas at the base station and maximum-likelihood sequence estimation at the mobile is considered. Per-survivor processing (PSP), a combined channel-tracking and sequence-estimation algorithm, has been used for improving the system performance. System performance results in the presence of severe Doppler frequency shifts and additive white Gaussian noise in a flat fading channel are presented. The computational complexity and acquisition capabilities of the PSP algorithm are also presented.
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