Compound Strategies Of Coding, Equalization And Space Diversity For Wide-bind TDMA Indoor Wireless Channels

Abstract

Compound strategies of equalization and space diversity in the form of an optimum baseband combiner are attractive for wide-band time division multiple access (TDMA) portable communication radio links in order to combat dispersive fading and cochannel interference. This paper investigates the performance of such a scheme in conjunction with convolutional coding and soft-decision Viterbi decoding via a semi-analytical technique based on the method of moments. Such an approach avoids a Gaussian characterization of interference and yields results for both ideal interleaving and no interleaving. With dual space diversity, three taps per forward filter and a data rate of 10 Mb/s, it is shown that, although a third space diversity branch remains preferable in terms of performance, channel coding can be a viable alternative, particularly in terms of outage rate, to increasing the space diversity order even in the absence of interleaving provided the signal-to-interference ratio is sufficiently high