期刊名称：International Journal of Advanced Research in Computer Engineering & Technology (IJARCET)
印刷版ISSN：2278-1323
出版年度：2014
卷号：3
期号：4
页码：1446-1450
出版社：Shri Pannalal Research Institute of Technolgy
摘要：MIMO-OFDM becomes a key technique for achieving high data rate in wireless communication. To enhance the MIMO link performance Adaptive modulation and coding (AMC) is used which chooses the suitable modulation and coding schemes appropriate to the current channel conditions. Maximum likelihood detection (MLD) employing QR decomposition and M-algorithm (QRM -MLD) can significantly improve the bit error rate (BER) performance of the Multi Carrier (MC) transmissions in a frequency-selective fading channel. In this paper a new link performance estimation technique is proposed for MIMO¨COFDM systems with QRM-ML receiver. Simulation results are obtained for signal-to-noise ratio (SNR) and the corresponding bit error rate (BER), using QRM -ML receiver. A comparative study of ML and QRM ML receivers are performed. Simulation results show that QRM MLD performs superior to MLD with low computational complexity.
