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无线个域网应用环境下速率自适应算法的研究 被引量:1

Study on adaptive rate control scheme in WPAN system
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摘要 首先对无线个域网(WPAN)应用环境下的干扰模型进行了分析,在此基础上提出了在WPAN工作的系统中引入速率自适应控制算法以提高诸系统的抗干扰性能,并减小对系统内其它设备及不同系统间设备的相互干扰.文章对自适应速率控制算法进行了分析,然后以蓝牙系统为例,给出了自适应速率控制算法对蓝牙系统性能改善的程度,重点讨论了对系统误比特率的影响.仿真结果显示,在理想反馈信道条件下,随着单信道信噪比的改善,自适应速率控制系统的最佳误比特率比固定速率传输系统有1~3个数量级的改善;即使采用简单的双速率自适应控制系统,也可以得到1~2个数量级的改善.由此得到的结果同样可应用于其它工作于无线个域网的系统. This paper analyzes the interference model of WPAN application environment firstly, then proposes the scheme of using adaptive rate control method as a solution to improve jamming rejection performance in WPAN systems. The new solution can also reduce mutual interferences among various WPAN systems. Using bluetooth system as an example, the performance of new scheme is given by the bit error probability. Simulation result shows that comparison with fixed rate scheme, the optimum bit error probability of adaptive rate control has a reduction of 1~2 exponential quantity, under perfect feedback condition. The obtained results can also be used in other WPAN system.
出处 《通信学报》 EI CSCD 北大核心 2004年第4期160-167,共8页 Journal on Communications
基金 国家自然科学基金资助项目(60072016) 教育部科学技术研究基金资助项目(99176) 香港UGC 基金资助项目
关键词 无线个域网 自适应速率控制 固定速率系统 蓝牙系统 IEEE 802.11b wireless personal area network adaptive rate control fixed rate system bluetooth system IEEE 802.11b Study on adaptive rate control scheme in WPAN system YE Zhi-hui1, SHEN Lian-feng1, SHEN Ke-qin2, KAM Tai-chan3 (1. National Mobile Communic
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