| OFDM系统中基于网络编码的协作传输技术 |
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| 引用本文： | 张纬良,郑宝玉,岳文静,陈志成.OFDM系统中基于网络编码的协作传输技术[J].南京邮电大学学报(自然科学版),2012,32(2):28-32. |
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| 作者姓名： | 张纬良 郑宝玉 岳文静 陈志成 |
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| 作者单位： | 南京邮电大学信号处理与传输研究院,江苏南京,210003 |
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| 基金项目： | 国家自然科学基金(60972039)资助项目 |
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| 摘 要： | 协作通信是一种能够有效对抗信道衰落,增加系统吞吐量的空间分集技术。网络编码技术在平衡网络负载,增强网络健壮性方面有着显著的能力。在频率选择性信道环境下,将网络编码技术联合协作传输用于OFDM系统,并针对协作用户间信道可靠和不可靠两种情况,分别分析了系统的中断概率。仿真显示该策略能够有效提高系统在频率选择性信道下的传输性能。
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| 关 键 词： | 正交频分复用 网络编码 协作传输 中断概率 |
Cooperative Transmission Technology Based on Network Coding in OFDM Systems |
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| ZHANG Wei-liang
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ZHENG Bao-yu
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YUE Wen-jing
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CHEN Zhi-cheng.Cooperative Transmission Technology Based on Network Coding in OFDM Systems[J].Journal of Nanjing University of Posts and Telecommunications,2012,32(2):28-32. |
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| Authors: | ZHANG Wei-liang ZHENG Bao-yu YUE Wen-jing CHEN Zhi-cheng |
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| Institution: | Institute of Signal Processing and Transmission,Nanjing University of Posts and Telecommunications,Nanjing 210003,China |
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| Abstract: | Cooperative communication is a kind of spatial diversity techniques to combat the fading channel and increase the system throughput effectively.In addition,network coding has a remarkable ability of balancing network load and enhancing network robustness.This paper combines the network coding techniques with cooperative transmission for OFDM system under the frequency selective channel environment,and analyses the system outage probability when the channel between users is reliable and unreliable,respectively.The simulation results show that the strategy can effectively improve transmission performance of the system in frequency selective channel. |
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| Keywords: | OFDM network coding cooperative transmission outage probability |
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