Modified Improved Layered OSIC Detection for MIMO-OFDM Systems

• Main Authors: Da-lun Guo, 郭達倫
• Other Authors: Dah-chung Chang
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/18728562728193991487

碩士 === 國立中央大學 === 通訊工程研究所 === 99 === Vertical Bell Laboratories Layered Space-Time(V-BLAST) is a multiple-input multiple-output(MIMO) wireless system. V-BLAST attains very high spectral efficiency while maintaining a low complexity of implementation. In this thesis, we propose a new layered symbol detection algorithm for V-BLAST OFDM systems. The proposed algorithm uses a symbol detection ordering method which is different from that recommended in the original OSIC algorithm. In our scheme, for the layer with the smallest post-detection SNR, we use reduced complexity ML for detection, and for other layers, a reduced iterative OSIC detection scheme is developed. Simulation results show that the proposed detection algorithm achieves high detection performance which is close to the ML detection method, and significantly reduces the computational complexity.