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

来源：IEEE Transactions on Wireless Communications, 2011, 10(4): 1260-1268.

DOI：10.1109/TWC.2011.021611.101103

• MIMO-OFDM
• data detection
• ICI cancellation
• message passing
• factor graph
• channel estimation error

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.

• 出版日期2011-4