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多元位置随机极性CP-EBPSK调制解调器研究 被引量:1

Research on M-ary CP-EBPSK Modem with Random-polar
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摘要 为改善随机极性的连续相位扩展二元相移键控(Extended Binary Phase Shift Keying with Continuous Phase,CP-EBPSK)调制信号的频谱利用率,提出了一种多元位置随机极性CP-EBPSK调制方式。阐述了多元位置随机极性CP-EBPSK调制原理。在数字冲击滤波器的基础上,分别给出了基于多路判决方式、贪婪判决方式和合理判决方式的解调器,并通过仿真对比和分析了CP-EBPSK调制、随机极性CP-EBPSK调制和多元位置随机极性CP-EBPSK调制的功率谱、-60dB带宽、频谱利用率和解调性能。仿真结果表明:1)在频谱结构不变的条件下,新的调制方式可使信息传输速率和频谱利用率成倍提高;2)若以bps/Hz/SNR(dB)为综合指标,CP-EBPSK系统为1.18*10-3,随机极性CP-EBPSK系统为7.01,而新的调制解调系统为13.8。 In order to improve the spectrum efficiency of random-polar modulated Extended Binary Phase Shift Keying with Continuous Phase (CP-EBPSK) , a random-polar and M-ary CP-EBPSK modulation is proposed. The modulation principle of random-polar and M-ary CP-EBPSK is demonstrated. Based on the digital impacting filter, the demodulator on the basis of Multi-path decision method, greedy decision method and rational decision method is presented, respectively. The contrast and analysis of the power spectrum, the -60dB bandwidth, the spectral efficiency, and the demodulation perform- ance among the CP-EBPSK, random-polar modulated CP-EBPSK, and the proposed modulation, are carried out. Simulation results show that : 1 ) under the premise of remaining the same spectral structure, the proposed modulation method can multiple the information transmission rate and spectral efficiency; 2) if taking bps/Hz/SNR(dB) as comprehensive indicator, CP-EBPSK is about 1.18 * 10-3 , random-polar modulated CP-EBPSK is about 7.01, and the proposed modem is 13.8.
出处 《信号处理》 CSCD 北大核心 2013年第1期10-16,共7页 Journal of Signal Processing
基金 国家自然科学基金项目"不对称二元调制信号的增强"(60872075)资助
关键词 连续相位扩展二元相移键控调制 频谱利用率 数字冲击滤波器 多路判决 贪婪判决 合理判决 Extended Binary Phase Shift Keying with .Continuous Phase spectrum efficiency digital impacting filter Multi-path decision greedy decision rational decision
作者简介 靳一(1984-),男,河南人,东南大学信息科学与工程学院博士研究生,主要研究方向为通信信号处理。E—mail:john0216@163.com 吴乐南(1952-),男,安徽人,东南大学信息科学与工程学院教授、博士生导师,中国电子学会会士,中国通信学会和中国计算机学会高级会员,主要研究方向为通信信号处理和多媒体信息处理。E—mail:wuln@sea.edu.cn 余静(1986-),女,蒙古人,东南大学信息科学与工程学院硕士研究生,主要研究方向为通信信号处理。E—mail:yangyangwodi@126.com 应鹏魁(1987-),男,浙江人,东南大学信息科学与工程学院硕士研究生,主要研究方向为通信信号处理。E—mail:yingpengkui@hikvision.com
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参考文献17

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共引文献65

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