摘要
UWB Ad Hoc网络在距离、功率、速率上有很好的互换性,这是下一代无线系统所期望的。在IEEE802.11DCF机制的基础上,提出了一种根据收端信噪比和信干比自适应调整发送速率和分组长度的MAC协议算法,并对该协议性能进行了仿真,在跨层节约的机制调控下,有效地克服Ad Hoc网络带宽股限问题。结果显示,相对于使用固定速率和分组长度的MAC协议,该协议可使系统吞吐量得到较大提高。
UWB Ad Hoc networks have good interchangeability in the distance, the power, the rate. This is an expectaion by the next generation wireless systems. On the basis of IEEE802. 11DCF mechanism,according to the admission of a letter stem end and signal - to- noise ratio than the adaptive transmission rate and a length of the MAC algorithm and the simulation performance of the agreement. The simulation results show that the use of a fixed rate and the length of the MAC protocol. The agreement will enable the system throughput has been improved greatly.
出处
《计算机技术与发展》
2009年第8期92-95,共4页
Computer Technology and Development
基金
国防预研基金资助项目(41307020203)
云南省农业科技攻关项目(YG010306)
关键词
超宽带通信
吞吐量
MAC
误码率
自适应
ultra-wideband communications
throughput
MAC
bit error rate
adaptive
