An Efficient Adaptive Bit and Power Allocation Algorithm for MIMO-OFDM Systems

摘要：

Multiple input multiple output orthogonal frequency division multiplexing (MIMO-OFDM) system is known to reduce the negative impact of the time dispersive characteristic of channels and show high spectral efficiency.Adaptive bit and power allocation (ABPA) is an adaptive modulation scheme that assigns an optimum symbol constellation and power to all subcarriers in MIMO-OFDM system to improve spectral and power efficiency.In this paper,we propose an ABPA algorithm based on the estimation of the frequencyselective fading severity.Simulation results show that the proposed algorithm can obtain good bit error rate (BER) performance by lower computational complexity.

关键词： OFDM MIMO adaptive modulation frequency-selective fading

作者: Shi-chao Zhang Zhong-mei Ji Wei-jia Cui

作者单位: National Digital Switching System Engineering and Technology Research Center ZhengZhou.HeNan,P.R.China

会议类型: 国际会议

会议名称: 2011 3rd International Conference on Computer and Network Technology(ICCNT 2011)(2011第三届IEEE计算机与网络技术国际会议)

会议地点: 太原

会议语种:英文

页码: 1-5

在线出版日期: 2011-02-26（万方平台首次上网日期，不代表论文的发表时间）