Multi-user Decision-feedback Space-time Equalization and Diversity Reception
نویسندگان
چکیده
| This paper investigates optimum in nitelength multi-user decision-feedback space-time equalization implemented with cross-feedback lters in order to remove not only post-cursor ISI but also postcursor CCI. Closed-form expressions are derived for the optimal feedforward and feedback lters as well as the minimum achievable MSE (mean-square error) as a function of channel spectra for a one-antenna system in the ideal case, i.e. where cross-feedback lters are available for all interferers. Those results are then generalized with the help of a single-channel equivalent model to the multiple-antenna (space-time) case. Monte Carlo simulation results are provided comparing the MMSE obtainable with multi-user DFE, with standard DFE, with LE and the matched lter bound in Rayleigh fading channels.
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