Iterative Frequency Domain Equalization for Single-Carrier Wideband MIMO Channels

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Executive Summary

Single Carrier Frequency Domain Equalization (SCFDE) is receiving considerable attention recently due to its comparable complexity and performance with OFDM. In this paper, an iterative SC-FDE with decision feedback in frequency domain is proposed for wideband Multiple-Input Multiple-Output (MIMO) channels and more general multi-path vector channels as a generalization of previous works considering FDE with decision feedback for Single-Input Single-Output (SISO) systems. The proposed detector is based on iterative forward and backward filtering followed by a MIMO multi-stream detector that uses a priori Log-Likelihood Ratios (LLR) of coded symbols.

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