Design of New Training Sequence and Estimation Scheme for Frequency Dependent I/Q Imbalance in MB-OFDM based UWB Systems

摘要：

This paper analyzes the I/Q imbalance effect of direct-conversion receiver in wide-band wireless communication system and sets up frequency-selective i/Q imbalance model for ultra-wide band system.We design a new training sequence based on extra phase rotation and propose an estimation algorithm using diversity message introduced by I/Q imbalance during the demodulation process. Theoretical analysis and simulation results based on typical MB-OFDM based UWB system confirm that the estimation scheme proposed in this paper can achieve 5dB EbNo advantage at PER=8%.

关键词： UWB I/Q imbalance phase rotation diversity gain

作者: Jun Zhou Liang Liu Fan Ye Junyan Ren

作者单位: State-Key Lab of ASIC & Systems,Fudan University,Shanghai,201203,China

会议类型: 国际会议

会议名称: 2009 IEEE 8th International Conference on ASIC(第八届IEEE国际专用集成电路大会)

会议地点: 长沙

会议语种:英文

页码: 509-512

在线出版日期: 2009-10-20（万方平台首次上网日期，不代表论文的发表时间）