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| Iterative Group-Based MAP Detection for MIMO Wireless Systems |
| Yang Yuan;Sun Yue; Hu Jun-feng;Zhang Hai-lin |
| State Key Lab. of Integrated Service Networks, Xidian Univ., Xi’an 710071, China |
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Abstract Based on the basic group-based MAximum a Posterior(MAP) detector, a novel detection scheme is proposed that uses a posterior information from the detected groups instead of a priori information from the decoder. The new scheme can improve the estimation precision of the interference. Further an iterative detector that uses a posterior information from last detection is presented. The iterative detector can fully use the output information from the detector and have a performance improvement further. Simulation results show that the new detectors have a significant performance gain over basic group-based MAP algorithm in uncoded systems and have a faster convergence in coded systems.
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Received: 30 December 2006
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2007, Vol. 29 
