標題: A Novel Message Passing Based MIMO-OFDM Data Detector with a Progressive Parallel ICI Canceller
作者: Huang, Chao-Wang
Ting, Pang-An
Huang, Chia-Chi
傳播研究所
Institute of Communication Studies
關鍵字: MIMO-OFDM;data detection;ICI cancellation;message passing;factor graph;channel estimation error
公開日期: 1-Apr-2011
摘要: A joint design of message passing MIMO data detector/decoder with progressive parallel inter-carrier interference canceller (PPIC) based on factor graph for OFDM-based wireless communication systems is proposed. By exchanging messages both in space domain and frequency domain, the proposed algorithm can suppress inter-antenna interferences and cancel inter-carrier interferences iteratively and progressively. With a proper designed message passing schedule and random inter-leaver, the short cycle problem is solved. Computer simulations show that the performance of the proposed message passing MIMO detector outperforms MMSE-SIC MIMO detector. The performances of PPIC, both in perfect channel estimation and imperfect channel estimation cases, are compared with the standard PIC architecture and the ICI self-canceller. The proposed PPIC is superior to PIC both in computational complexity and system architecture. The parallel structure of PPIC is similar to a systolic array. The proposed algorithm potentially leads to a very-high-speed detector/decoder. It is very suitable for VLSI implementation and it is a potential candidate for data detection/decoding in future high data rate, high mobility, wireless MIMO-OFDM communication systems.
URI: http://dx.doi.org/10.1109/TWC.2011.021611.101103
http://hdl.handle.net/11536/9030
ISSN: 1536-1276
DOI: 10.1109/TWC.2011.021611.101103
期刊: IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
Volume: 10
Issue: 4
起始頁: 1260
結束頁: 1268
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