A Novel Low Complexity Detection Algorithm for MIMO-OFDM Systems

• Main Authors: Chih-Wei Liao, 廖志瑋
• Other Authors: none
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/23690427495851258307

碩士 === 國立臺灣科技大學 === 電子工程系 === 96 === In 4th generation mobile communication, OFDM and MIMO are very important technology. We can provide speedy transmission by combine OFDM with MIMO. Accuracy of transmission is another important purpose over the speedy transmission. In order to reach above purpose, which require high complexity. Therefore complexity reduce to acceptable range, which is our purpose. Conventional MMSE-SIC algorithm commonly is used to linear iterative MUD. In MIMO-OFDM systems, complexity of MMSE-SIC is . If MIMO-OFDM combine with ECC(Error Control Code) than complexity is increased to very high in iterative MUD systems. Therefore, we provide a novel low complexity detection algorithm. This novel algorithm reduce complexity by Gaussian approximation and assorted integral. Complexity of novel detection algorithm is . We not only reduce complexity but also keep BER performance. Novel algorithm have the same performance with MMSE-SIC and very close to optimal detection algorithm.