一种基于定向天线的自组网多址接入协议  

Ad-Hoc Network Multi-Acccess Protocol based on Directional Antenna

作　　者：宋滔[1] 白翔[1] 

机构地区：[1]中国电子科技集团公司第三十研究所,四川成都610041

出　　处：《通信技术》2015年第2期175-180,共6页Communications Technology

摘　　要：文中提出一种基于定向天线的自组织网多址接入协议DA-STDMA。该协议利用方向性天线定向波束增益特性,保证在高速可靠传输条件下,提升系统的容量,同时可以防止信息截获,提升系统的抗干扰性能。经过理论计算,DA-STDMA协议在信道利用率上与采用全向天线相比有显著提高。文中建立了DA-STDMA协议仿真模型,通过对比空间复用度、网络吞吐量等系统性能,DA-STDMA协议利用定向天线比全向天线性能有明显提升。同时仿真研究也表明,定向天线的定位算法对整个系统建链的收敛时间产生一定影响。The DA-STDMA（ directional antenna based space time division access） protocol is proposed.DA-STDMA protocol,by employing directional antenna with stronger signal transmission gain,can ensure high-rate and reliable transmission condition,improve system capability,prevent information interception and enhance the anti-inteference performance of the system.Theoretical analysis indicates that,the channel utility rate of directional antenna enjoys an obvious increase as compared with that of omni-directional antenna.Simulation model on DA-STDMA protocol is constructed,and the comparison of system performance,such as space reuse rate and network throughput,indicates that DA-STDMA protocol with directional antenna is much better in performance than with omni-directional antenna.Meanwhile,simulation shows that the location algorithm of directional antenna would exerts certain influence on the convergence time of the whole system.

关 键 词：定向天线 多址接入控制 信道利用率 空间复用度 

分 类 号：TN93[电子电信—信号与信息处理]