An Improved Selected Mapping Scheme with Double Thresholds in OFDM systems

摘要：

It is well known that orthogonal division multiplexing (OFDM) transmission is spectrally efficient but power inefficient due to the large peak-to-average power ratio (PAPR) of the OFDM signal. Therefore, the detection efficiency of OFDM receiver is very sensitive to the non linear devices used in its signal processing loop, such as Digitalto-Analog Converter (DAC) and High Power Amplifier (HPA), which may severely impair system performance due to induced spectral re-growth and detection efficiency degradation. In this paper, an improved selected mapping scheme with double thresholds was proposed, in which double thresholds was used to select signal vector transmitted. Simulation results show that the presented scheme can achieve better performance than single threshold SLM scheme and extremely reduce the complexity compared with conventional SLM.

关键词： OFDM SLM PAPR CCDF threshold

作者: YANG Tiejun LU Liangyou

作者单位: School of Information Science and Engineering Henan University of Technology Zhengzhou, China

会议类型: 国际会议

会议名称: 2010 International Conference on Measurement and Control Engineering(2010年IEEE测量与控制工程国际会议 ICMCE2010)

会议地点: 成都

会议语种:英文

页码: 176-179

在线出版日期: 2010-11-16（万方平台首次上网日期，不代表论文的发表时间）