乘法运算的模拟网络编码中继方法

发布时间：2018-01-16 04:32

本文关键词：乘法运算的模拟网络编码中继方法　出处：《电子与信息学报》2014年07期 　论文类型：期刊论文

【摘要】：当前无线网络编码中继采用异或运算和叠加运算实现,该文提出一种基于乘法运算的网络编码中继方案。该方案中继节点对接收到的两个源节点信号直接相乘,然后放大转发,从而实现网络编码。与异或运算的网络编码相比,该方案采用模拟技术实现,降低了中继节点网络编码的复杂度;同时该方案将接收信号与本地信号相乘实现网络译码,译码算法比叠加运算的方案简单。理论分析表明该方案的分集增益与未经网络编码的中继系统相同;仿真结果表明,该方案与现有的网络编码中继协作方案性能相当。
[Abstract]:The current wireless network coding relay is implemented by XOR operation and superposition operation. In this paper, a network coded relay scheme based on multiplication operation is proposed, in which the relay node multiplies the received two source node signals directly. Then the network coding is realized by amplifying and forwarding, and compared with the network coding of XOR operation, the scheme is implemented by analog technology, which reduces the complexity of network coding of relay nodes. At the same time, the scheme multiplies the received signal and the local signal to realize the network decoding. The decoding algorithm is simpler than the superposition algorithm. The theoretical analysis shows that the diversity gain of the scheme is the same as that of the uncoded relay system. The simulation results show that the performance of the proposed scheme is comparable to that of the existing network coding relay cooperation scheme.
【作者单位】：南京邮电大学通信与信息工程学院;
【基金】：国家973计划项目(2013CB329005) 国家科技重大专项(2012ZX03001008-003,2011ZX03005-004-03) 江苏973计划(BK2011027)资助课题
【分类号】：TN92
【正文快照】： 1引言采用MIMO技术可提高无线通信系统的容量,获取一定的空间分集增益[1]。但移动终端受体积的限制,不适宜采用多天线,为此,文献[2-4]等提出协作通信技术,但在协作通信中,由于中继节点要转发源节点信号,使得系统的吞吐量降低了。当前有两种方法提高协作通信系统的吞吐量:一是

【相似文献】