Low-Complexity Soft-Output Sphere Decoding with Modified Repeated Tree Search Strategy

• Main Authors: Chiu, Rong-Dong, 邱榮東
• Other Authors: Chen, Po-Ning
• Format: Others
• Language: en_US
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/17768650638300252819

碩士 === 國立交通大學 === 電信工程研究所 === 101 === Various detectors for multiple-in-multiple-out (MIMO) technologies have been proposed, yet to achieve a good complexity-performance tradeoff still remains a challenge problem. In this thesis, we proposed a low complexity soft-output sphere decoding, called modified repeated tree search (RTS), that can achieve good complexity-performance tradeoff and is suitable for hardware implementation. We further apply the modified RTS for interference cancellation with unknown interference modulation. Simulation results show that a good modulation classification rate and block error rate (BLER) can be achieved with lesser complexity and resources consumed when it is compared with the traditional general likelihood ratio test (GLRT).