Title :
Turbo Receiver with ICI-Aware Dual-List Detection for Mobile MIMO-OFDM Systems
Author :
Chi-Yun Chen ; Yi-Yao Lan ; Tzi-Dar Chiueh
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
This paper presents a turbo receiver using the proposed ICI-aware Dual-List (IDL) MIMO detection method that can efficiently detect signals deteriorated by both inter-carrier interference (ICI) and inter-antenna interference (IAI). These two interferences often occur simultaneously in mobile multiple-input multiple-output (MIMO)-orthogonal frequency division multiplexing (OFDM) communication systems. The IDL detector enhances ICI mitigation and avoids the notorious error propagation problem encountered in conventional interference mitigation/cancellation schemes. In addition, this study proposes three techniques to reduce the required computational complexity by 99.63% in complex additions, 99.69% in complex multiplications, and 67.25% in comparison operations. Simulation results confirm the theoretical upper bound and also show that the bit error rate performance of the receiver in high-mobility channels is comparable to that of a maximum-likelihood MIMO-OFDM receiver in stationary channels, i.e., the ICI-free scenario.
Keywords :
MIMO communication; OFDM modulation; mobile radio; radio receivers; radiofrequency interference; ICI-aware dual-list detection; inter-antenna interference; inter-carrier interference; mobile MIMO-OFDM systems; turbo receiver; Detectors; Interference; MIMO; Measurement; Mobile communication; Receivers; Vectors; MAP detection; Multiple-output multiple-input (MIMO); OFDM; inter-carrier interference (ICI); performance analysis; turbo receiver;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2012.113012.111782