基于反相对称协同MIMO的一种MANET传输机制  

A MANET Transmission Mechanism Based on Phase-inversion Symmetric Cooperative MIMO

作　　者：刘婉妮[1] 李艳萍[1] 

机构地区：[1]太原理工大学信息工程学院,太原030024

出　　处：《科学技术与工程》2013年第19期5498-5503,共6页Science Technology and Engineering

基　　金：国家自然科学基金项目(61271249)资助

摘　　要：针对移动Adhoc网络信道传输性能不佳等问题,提出一种基于反相对称协同MIMO的移动Adhoc网络传输机制,此机制结合反相对称调制法和协同MIMO技术各自的优点,充分利用相邻信道噪声的相关性来提高系统传输性能。通过理论分析和系统仿真得出反相对称协同MIMO传输机制能够获得高于传统协同MIMO传输技术至少4倍的信噪比增益,并且网络传输信道的信道容量和抗噪声性能也得到了进一步提高,使协同MIMO有更大的实际应用价值。To further improve the channel transmission performance of mobile Ad hoe Networks and the practi- cal value of the cooperative MIMO technology, a MANET transmission mechanism based on phase-inversion sym- metric cooperative MIMO （PISM-CMIMO） is proposed, which absorbs the advantages of phase-inversion symmetric method and cooperative MIMO technology. The transmission process of PISM-CMIMO system is presented in detail. Theoretical analysis and system simulation results show that the signal-to-noise ratio gain of the proposed PISM- CMIMO transmission mechanism is 4 times greater than that of the traditional cooperative MIMO transmission mech-anism at least. In addition, the proposed PISM-CMIMO transmission mechanism can make the channel capacity and anti-noise performance of MANET enhance further, and make cooperative MIMO technology have greater practical value.

关 键 词：移动AD HOC网络 协同MIMO 反相对称法 天线间距 

分 类 号：TN929.5[电子电信—通信与信息系统]