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Efficient Soft-Output Generation Method for Spatially Multiplexed MIMO Systems
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- Authors
- Jung Hyun Kim, Youn Ok Park, Seung Jae Bahng
- Issue Date
- 2009-11
- Citation
- IEICE Transactions on Communications, v.E92-B, no.11, pp.3512-3515
- ISSN
- 0916-8516
- Publisher
- 일본, 전자정보통신학회 (IEICE)
- Language
- English
- Type
- Journal Article
- Project Code
- 09MR7200, Development of IMT-Advanced based WiBro Platform Technologies, Youn Ok Park
- Abstract
- A simple detector named QR-LRL for MIMO systems was proposed in [7] and it was shown that QR-LRL approached the hardoutput ML performance. However, its soft-output performance is not capable of approaching the near ML performance. In this letter, we propose a novel detection method which can generate reliable soft-outputs while avoiding the empty vector set problem. The proposed detector efficiently uses the upper triangular structure in QR decomposition. Simulation results show that the proposed detector can approach the near soft-output ML performance as well as hard-output with feasible complexity. Copyright © 2009 The Institute of Electronics, Information and Communication Engineers.
- KSP Keywords
- Detection Method, Empty Vector Set, Information and communication, MIMO system, QR Decomposition, QR-LRL, Soft-output, Triangular structure, output performance, simulation results