无线传感网络中多转发节点协作传输策略  

Multi-relay Cooperative Transmitting Scheme in Wireless Sensor Networks

作　　者：曾振东[1] 孙波[1] 邓嘉明[2] ZENG Zhen-dong;SUN bo;DENG Jia-ming(Computer Engineering Department,Guangdong Youth Vocational College,Guangzhou 510507,China;Information Network Center,Jiaying University,Meizhou 514015,China)

机构地区：[1]广东青年职业学院计算机工程系,广州510507 [2]嘉应学院信息网络中心,广东梅州514015

出　　处：《火力与指挥控制》2021年第7期52-56,共5页Fire Control & Command Control

基　　金：广东省自然科学基金(2018A030307064);广东省省级科技计划项目(2015A030401104,2016B010122034,2017B090906003);广东青年职业学院科研基金资助项目(ZD201801)。

摘　　要：协作通信是提高无线传感网络性能的有效技术。为此,针对能量采集的无线传感网络(EH-WSNs),提出多转发节点协作传输(Multi-relay Cooperative Transmitting,MRCT)方案。MRCT方案采用时隙切换/功率分配机制,优化解码信息和传输信息的功率分配;转发节点将所接收的信息进行放大——转发处理,并由将多个转发节点的信息合并后,再传输传感节点,进而提高吞吐量和安全能力。通过仿真分析了MRCT方案的吞吐量和安全中断概率性能。仿真结果表明,提出的MRCT方案的吞吐量和安全性能得到提升。Cooperative Communication is an effective technology to improve the performance of wireless sensor network(WSNs).Therefore,for EH-WSNs,multi-relay cooperative transmitting(MRCT)scheme is proposed in this paper.The MRCT scheme adopts the time-slot switching/power distribution mechanism to optimize the power distribution of decoded information and transmitted information.These relay nodes make amplify-and-forward processing of the received information,and the signals from multiple relay nodes are combined before being forwarded in order to improve the throughput and safety capability.The through put and safety breakout performance of MRCT scheme are analyzed by simulation.The simulation results show that the throughput and secrecy performance of MRCT have been improved.

关 键 词：无线传感网络 协作转发 功率分配 信道增益 信噪比 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]