This paper presents a theoretical analysis of the matched-filter bound on N-branch space-time processing receivers in a frequency-selective correlated fading environment. The development is based on a Karhunen-Loève expansion in the frequency domain. Although many other works are based on similar expansions, we present a more general analytical framework in the frequency domain covering Rayleigh and Rician fading scenarios, with and without branch correlations and/or unequal branch powers. The Rician fading scenario is approximated using a Nakagami-m distribution. The branch correlations and unequal branch powers are dealt with through a simple and novel device, the concatenated array-equivalent channel. Likewise, a novel approach is presented that reduces the Rician fading case to an equivalent Rayleigh-fading system. Furthermore, results are presented for different array topologies where correlation characteristics are obtained with the help of a measurement-validated correlation model situated in the local multipoint distribution service band, i.e., the carrier frequency used in the measurements was 29.5 GHz.

Additional Metadata
Keywords Array signal processing, Broadband communication, Matched-filter bound, Maximum-likelihood (M-L) sequence estimation, Space-time processing
Persistent URL dx.doi.org/10.1109/TWC.2004.837392
Journal IEEE Transactions on Wireless Communications
Citation
Roy, S. (Sébastien), & Falconer, D.D. (2004). The matched-filter bound on optimal space-time processing in correlated fading channels. IEEE Transactions on Wireless Communications, 3(6), 2156–2169. doi:10.1109/TWC.2004.837392