针对宽带无线自组织网络(Ad Hoc)应用,首先将现有的多信道多址接入(MAC)协议根据使用天线数目的不同分为三类,分别阐述其特点,并对基于双天线的多信道MAC协议进行了性能分析,从而发现了该多信道MAC协议存在性能瓶颈；进一步利用开源的OMNeT++4.0和INET网络仿真平台,对基于双天线的多信道MAC协议进行性能仿真；仿真结果显示:当数据分组大小为512字节时,网络吞吐量最高为每秒1432个分组；最后提出了解决性能瓶颈问题可能的解决方案.%Aim at the applications for broadband wireless self- organizing network (Ad Hoc) , the existing multi - channel medium ac-cess control (MAC) protocol has been divided into three categories according to the amount of the antennas, and its characteristic has been expounded independently. Then it is found that performance bottleneck does exist for the dual antenna Multi - channel MAC protocol based on the performance analyses. Further, the performance simulations for dual antenna multi -channel MAC protocol are made by using the open source network simulation platform OMNeT++4. 0 and INET. Simulation results show that when the data packet size is 512 bytes, the network throughput is limited to 1432 packets per second. Finally, some possible solutions for the bottleneck problem are proposed.
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