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 NT 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 Ci local solutions at the i -th stage of the whitening process. Accordingly, the proposedMWDcan achieve the optimum maximum likelihood detector (MLD)while having a considerably reduced computational complexity compared with the optimal MLD.
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Acknowledgements This work was supported by Korea Science and Engineering Foundation through the NRL Program (Grant R0A-2007-000-20043-0). This research was supported by the MKE (The Ministry of Knowledge Economy), Korea, under the ITRC (Information Technology Research Center) support program supervised by the NIPA (National IT Industry Promotion Agency) (NIPA-2010–(C1090-1011-0005)).
All Science Journal Classification (ASJC) codes
- Computer Science Applications
- Electrical and Electronic Engineering