降低OFDM信号PAPR的编码技术研究
毕业论文关键词 正交频分复用，峰均功率比，信号预畸变技术，概率类技术，编码技术
Title Study of the coding technology of OFDM signal PAPR
Abstract 4G has come into our life, frequency pision multiplexing (OFDM) is the core technology of 4G technology. OFDM technology is a powerful anti-jamming capability, high transmission rate of high frequency with high utilization rate. OFDM technology is widely used, domestic and foreign scholars have not stopped the research of OFDM technology. OFDM system will inevitably produce high peak to average ratio, high PAPR, the power amplifier dynamic range exceeds the limit, the signal will produce nonlinear distortion will not only to increase the A / D and D / A conversion of the complexity and improve the requirements of the power amplifier, it will produce a series of interference and signal distortion, reduce the accuracy of the system. At present, the method of solving the high OFDM of PAPR system can be pided into three kinds: signal pre-distortion technology, probability technology and coding technology. This paper focuses on the analysis of coding technology. The typical code coding group includes Block code, Golay code and Reed-Muller code.
Keywords OFDM, PAPR, signal pre-distortion technology, probability technique, coding technique
目次
1绪论1
1.1无线通信概述1
1.2研究背景及意义2
1.3论文主要安排2
2OFDM系统概述4
2.1OFDM技术.4
2.2OFDM信号的产生.5
2.3OFDM的系统7
2.4OFDM系统的关键技术9
2.4.1同步技术9
2.4.2信道估计技术10
2.4.3降低峰均比的技术10
2.4.4其它相关技术10
2.5OFDM技术优缺点11
3OFDM系统中的峰均功率比13
3.1峰均功率比定义13
3.2高峰均功率比对系统的影响14
3.3降低峰均功率比的非编码类技术14
3.3.1信号预畸变技术15
3.3.2概率类技术18
3.4小结20
4降低峰均功率比的编码技术.21
4.1分组编码调制(BLOCKCODINGMODULATION，BCM).21
4.1.1分组编码调制原理.21
4.1.2分组编码调制方案性能分析.24
4.2格雷互补序列(GOLAYCOMPLEMENTSERIES).24
4.2.1格雷互补序列原理.24
4.2.2格雷互补序列方案性能分析.25
4.3雷德密勒码(REED-MULLER，RM).26
4.3.1雷德密勒码原理.26
4.3.2雷德密勒码方案性能分析.27
4.4小结27
总结28
致谢29
参考文献30
1 绪论 1.1
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