车联网中车—车通信系统在n-Rayleigh信道下的性能分析

doi:10.3969/j.issn.1671-1122.2014.12.014

信息网络安全 ›› 2014, Vol. 14 ›› Issue (12): 65-70.doi: 10.3969/j.issn.1671-1122.2014.12.014

车联网中车—车通信系统在n-Rayleigh信道下的性能分析

徐凌伟¹, 张浩^{1, 2}, 王景景³, 吴春雷⁴

1. 中国海洋大学信息科学与工程学院,山东青岛 266100;
2. 加拿大维多利亚大学电子与计算机工程学院,维多利亚 V8W 3P6;
3. 青岛科技大学信息科学与技术学院,山东青岛 266061;
4. 中国石油大学计算机与通信工程学院,山东青岛 266580

收稿日期:2014-07-22 出版日期:2014-12-15
通讯作者: 徐凌伟 13210120837@163.com
作者简介:徐凌伟(1987-),男,山东,博士研究生,主要研究方向：无线通信、信道编码理论;张浩(1975-),男,江苏,博士生导师,教授,博士,主要研究方向：超宽带无线通信系统、60GHz无线通信、MIMO无线通信;王景景(1975-),女,安徽,副教授,博士,主要研究方向：无线通信、超宽带无线系统、协作通信网络;吴春雷（1980-）,男,河南,讲师,博士,主要研究方向：无线通信、MIMO技术。
基金资助:
国家自然科学基金[60902005,61304222]; 山东省自然科学基金[ZR2012FQ021]; 山东省高等学校科技计划[J12LN88]; 青岛市国际科技合作项目[12-1-4-137-hz]

Performance Analysis of Vehicle-to-Vehicle Communication System in the Internet of Vehicle under n-Rayleigh Fading Channels

XU Ling-wei¹, ZHANG Hao^{1, 2}, WANG Jing-jing³, WU Chun-lei⁴

1. College of Information Science and Engineering, Ocean University of China, Qingdao Shandong 266100, China;
2. Department of Electrical and Computer Engineering, University of Victoria, Victoria V8W 3P6, Canada;
3. Department of Information Science and Technology, Qingdao University of Science & Technology, Qingdao Shandong 266061,China;
4. Department of Computer and Communication Engineering, China University of Petroleum, Qingdao Shandong 266580, China

Received:2014-07-22 Online:2014-12-15

摘要/Abstract

摘要： 文章在n-Rayleigh衰落信道下,研究了使用选择合并（election combining,SC）接收的车—车通信系统的平均符号误码率（average symbol error probability,ASEP）和信道容量性能。文章基于积分法,分别推导了车—车通信系统采用M进制相移键控（M-ary phase shift keying,MPSK）和M进制脉冲幅度调制（M-ary pulse amplitude modulation,MPAM）的平均符号误码率的精确表达式和信道容量的精确表达式。然后在不同系统条件下,分别对平均符号误码率和信道容量性能做了数值仿真,理论分析结果与仿真结果相吻合,验证了理论分析结果的正确性。仿真结果表明,随着分集支路数的增加,系统的ASEP和信道容量性能得到了很好的改善,当使用QPSK调制信噪比为16dB时,分集支路数L=1,系统的误码率是7×10^-2,信道容量是4bps/Hz;分集支路数L=2,系统的误码率是1×10^-2,信道容量是5.1bps/Hz;分集支路数L=3,系统的误码率是2×10^-3,信道容量是5.8bps/Hz。

关键词: 车联网, 选择合并, n-Rayleigh信道, 平均符号误码率, 信道容量

Abstract: The average symbol error probability (ASEP) and channel capacity of vehicle-to-vehicle communication system employing election combining (SC) receiving under n-Rayleigh fading channels is investigated in this paper. Based on the integral approach, the exact form expressions of the average symbol error probability are derived for M-ary phase shift keying (MPSK) and M-ary pulse amplitude modulation (MPAM). The exact form expressions of ergodic capacity are also presented. Then the ASEP and channel capacity performance under different conditions is respectively evaluated through numerical simulations. The numerical simulations results coincide with the theoretical results well, and the accuracy of the analytical results is verified. Simulation results show that: the ASEP and channel capacity performance can be improved with the increase of the number of diversity branches, when SNR=16dB, the diversity branches L=1, the ASEP with QPSK is 7×10^-2, the channel capacity is 4bps/Hz; the diversity branches L=2, the ASEP with QPSK is 1×10^-2, the channel capacity is 5.1bps/Hz; the diversity branches L=3, the ASEP with QPSK is 2×10-3, the channel capacity is 5.8bps/Hz.

Key words: Internet of vehicles, selection combining, n-Rayleigh fading channels, average symbol error probability, channel capacity

中图分类号:

TP309

徐凌伟, 张浩, 王景景, 吴春雷. 车联网中车—车通信系统在n-Rayleigh信道下的性能分析[J]. 信息网络安全, 2014, 14(12): 65-70.

XU Ling-wei, ZHANG Hao, WANG Jing-jing, WU Chun-lei. Performance Analysis of Vehicle-to-Vehicle Communication System in the Internet of Vehicle under n-Rayleigh Fading Channels[J]. 信息网络安全, 2014, 14(12): 65-70.

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车联网中车—车通信系统在n-Rayleigh信道下的性能分析

Performance Analysis of Vehicle-to-Vehicle Communication System in the Internet of Vehicle under n-Rayleigh Fading Channels

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