Multiuser Detection
Introduction to Space-Time Wireless Communications
Introduction to Space-Time Wireless Communications
Performance: complexity comparison of receivers for a LTE MIMO-OFDM system
IEEE Transactions on Signal Processing
IEEE Transactions on Communications
Iterative soft compensation for OFDM systems with clipping and superposition coded modulation
IEEE Transactions on Communications
Turbo-BLAST for wireless communications: theory and experiments
IEEE Transactions on Signal Processing
IEEE Transactions on Wireless Communications
A Correlation Based Analysis for Approximate MAP Detectors and Iterative Receivers
IEEE Transactions on Wireless Communications
Turbo Equalization: An Overview
IEEE Transactions on Information Theory
IEEE Journal on Selected Areas in Communications
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In this paper, we propose a low-complexity butterfly integration structure (LCBIS) for the minimum mean square error-soft interference cancellation (MMSE-SIC) soft-in soft-out (SISO) detector, which is widely used for MIMO systems. Unlike the conventional MMSE-SIC SISO detector which performs matrix inverse operations, the LCBIS performs butterfly integration operations with low complexity. To develop the LCBIS SISO detector, we derive an integral expression for the extrinsic information of the conventional MMSE-SIC SISO detector, and then propose a butterfly integration structure to compute the integral expression efficiently. Without matrix inverse operations, LCBIS significantly reduces the complexity of the MMSE-SIC SISO detector. In addition, simulation results show that LCBIS can offer much better BER than the other SISO detectors which do not perform matrix inverse operations.