Asia-Pacific Conference on Communications


Session Number:15-AM2-A



A Dynamic Layer Ordering M-paths MIMO Detection Algorithm and its Implementation

Jianping Chen,  En Zhou,  Xiaolin Hou,  Zhan Zhang,  Hidetoshi Kayama,  


Publication Date:2008/10/14

Online ISSN:2188-5079


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During the past decade, Multiple-Input-Multiple-Output (MIMO) systems have received a significant attention because of its promising capacity increase over Single-Input-Single-Output (SISO) systems. In this paper, as a key technology, we present a novel M-paths MIMO detection algorithm with dynamic-layer-ordering for spatial-multiplexing MIMO systems over rich scattering wireless environment. This algorithm obtains a near-ML detection performance (e.g., only 0.2 dB performance degradation for 4-TX and 4-RX MIMO with 16QAM) with a much lower computational complexity compared to the ML detection. We also develop an recursive procedure for dynamic-layer-ordering and reduce the ordering complexity from O(NT4 ) to O(NT3 ), where NT is the number of TX antennas. In order to verify the feasibility and performance, a pipelined structure is designed and implemented in FPGA with limited hardware resources and a 200Mbps throughput.