A New Multistage Whitener-Based Detector for MIMO Systems |
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| Authors: | Sangho Nam Sungmook Lim Kyunbyoung Ko Daesik Hong |
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| Affiliation: | 1.Information and Telecommunication Laboratory, School of? Electrical and Electronic Engineering,Yonsei University,Seoul,Korea;2.Department of Control & Instrumentation Engineering,Chungju National University,Chungbuk,Korea |
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| Abstract: | We propose a new multistage whitener-based detector (MWD) to guarantee low complexity and high performance for multiple-input multiple-output systems. The proposed MWD reduces complexity by detecting two out of N T transmitted symbols in each stage of the whitening process. Furthermore, it can enhance performance by adopting a norm-based selection criterion that considers the instantaneous channel state and interference cancellation using C i local solutions at the i-th stage of the whitening process. Accordingly, the proposed MWD can achieve the optimum maximum likelihood detector (MLD) while having a considerably reduced computational complexity compared with the optimal MLD. |
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