利用格雷序列降低32QAM-OFDM信号的峰均包络功率比
Reducing Peak-to-Mean Envelope Power Ratio of 32QAM-OFDM Signals with Golay Sequences
正交频分复用(OFDM)技术的关键之一是要降低峰均包络功率比. 本文通过把一种新的方形32QAM星座图表示为QPSK和8PSK的线性组合，利用QPSK和8PSK的上的格雷序列，用编码方法构造了方形32QAM星座图上的一组低峰均包络功率比的序列. 证明了对于任意载子波数的32QAM-OFDM通信系统，当输入为此序列时，峰均包络功率比不大于4.17 (6.2dB).
major barrier to the widespread acceptance of OFDM is the high peak-to-mean envelope power ratio (PMEPR) of uncoded signals. Using a realization of square 32-QAM as set addition of two scaled versions of the QPSK and 8-PSK constellation, we construct square 32-QAM sequences having low PMEPR from QPSK and 8-PSK Golay sequences. We also establish the upper bound of PMEPR of these sequences is no more than 4.17 (6.2 dB).)
孙春辉、王子龙、李晖、杨武
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QAM-OFDM峰均包络功率比格雷序列
QAM-OFDMPeak-to-Mean Envelope Power RatioGolay Sequenced
孙春辉,王子龙,李晖,杨武.利用格雷序列降低32QAM-OFDM信号的峰均包络功率比[EB/OL].(2014-03-11)[2025-08-05].http://www.paper.edu.cn/releasepaper/content/201403-325.点此复制
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