Comparisons of Two Detectors for a Tradeoff between Complexity and Performance in MIMO-OFDM Systems
Recent works on detector algorithms in multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) system were mainly focused on sphere detector, which provides a tradeoff between complexity and performance by suitably choosing the radius or the number of candidates in the search space. Meanwhile, another approach, called poly-diagonalization and trellis detector, has been proposed to compromise the complexity and performance in |13| and developed in 14. In this paper, we compare sphere decoding and asymmetrical poly-diagonalization approach with the variable in terms of both complexity and performance. The performance is evaluated in frequency selective fading channel environment on the basis of orthogonal frequency division multiplexing with channel codes, where the generation of soft decision values is crucial. The results show that the performances of poly-diagonalization approach and sphere decoding have their own advantages at low and high computational complexity respectively.
coded mimo-ofdm detector algorithms frequency selective fading
Jin Ren Seokhyun Yoon
Department of Electronics Engineering Dankook University Yongin-si, Gyeonggi-do. Korea Department of Electronics Engineering Dankook University Yongin-si, Gyeonggi-do, Korea
国际会议
重庆
英文
235-239
2011-01-21（万方平台首次上网日期，不代表论文的发表时间）