无线小区固定中继选择算法及仿真

Study on the Relay Selection Algorithms of Wireless-cell System

为了使相同成本的小区无线覆盖性能达到最大化,在研究了固定中继的无线小区系统后,提出一种简化动态中继选择算法的途径。仿真中继选择算法对系统性能的增益,证明固定中继系统较无中继系统在性能上有极大的提高;同时,还通过比较简化的中继选择算法和相应的原算法的仿真结果,说明简化算法减少了实现的复杂度,降低了通信损耗,而在性能上基本不受影响。

Study on the Relay Selection Algorithms of Wireless-cell System YAN Wen-zhong1, ZHU Jin-shan1, XUE Rong1, ZHAO Wen-dao2 （1. Network ＆ Information Center, Ningbo Institute of Technology, Zhejiang University, Ningbo Zhejiang 310015, China; In order to improve the performance of the wireless network with limited cost, after researching the infrastructure of a type of wireless-cell system with fixed relays and reviewing its relaying channel partition scheme and several relay selection algorithms as well, an approach to simplify the algorithms is proposed. Comparing to the no relay cells, the simulating results show that, the enhancement which the relay selection algorithms introduced in the system are apparent. Meanwhile, through comparing the results of simplified algorithms and the corresponding original algorithms, it is proved that the simplified algorithms are more easily to be realized with less complexity on condition that the performance is not affected.