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 which 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 LMDS (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 sequence estimation, Space-time processing
Conference 2004 IEEE International Conference on Communications
Citation
Roy, S. (Sébastien), & Falconer, D.D. (2004). The space-time matched-filter bound in correlated LOS and NLOS fading channels. In IEEE International Conference on Communications (pp. 931–936).