基于盲源分离的云无线接入网接入策略  

An Access Strategy for Cloud Radio Access Network with Blind Source Separation

作　　者：沈毅[1] 齐丽娜[1] 

机构地区：[1]南京邮电大学通信与信息工程学院,江苏南京210003

出　　处：《计算机技术与发展》2017年第4期25-28,33,共5页Computer Technology and Development

基　　金：国家"973"重点基础研究发展计划项目(2013CB329005);国家自然科学基金资助项目(61471201)

摘　　要：由于移动通信技术的快速发展和互联网资源的极大丰富,人们可以轻松获得更加便利和多样的信息服务,然而日益增长的数据量使得现有无线蜂窝通信系统需要支撑更重的业务负担并提供更高的通信速率,因此提升蜂窝系统的效率是一个重要课题。云无线接入网技术是一种高效的、针对接入网络集中化的新技术。为此,基于云蜂窝,采用盲信源分离算法,设计并实现了一种根据云蜂窝网络拓扑结构进行信道选择的接入策略,使蜂窝系统在工作时可以选择合适的信道,从而提高协作通信的效率;同时还针对系统性能较差的拓扑结构,对原有接入策略进行了改进,使得蜂窝系统具有最佳的误码率性能。仿真结果表明,所提出的接入策略有效降低了系统误码率,提高了信道使用效率。Due to the rapid growing popularity of mobile communication technology and abundance of Interact resources,it is quite easy for people to get more convenience and variety of information services. However, the increasing amount of data makes the existing wire- less cellular communication system to support heavier burden on the business and provide a higher rate of communication. Therefore,how to improve efficiency of the cellular system is still an important issue. Cloud radio access network technology is a new efficient technology for centralized access network. Based on the cloud cellular,a new method of channel selection has been designed by using the blind source separation algorithm, to make the cellular system select the appropriate channel to improve the efficiency of cooperative communication. Against the poor performance of the system topology, the original access strategy has been improved so that the system has a best error rate performance. The simulation results show that the proposed access strategy has effectively reduced the bit error rate of the system and increasing efficiency of channel.

关 键 词：云无线网络 接入策略 云蜂窝系统 拓扑结构 盲信源分离 协作通信 

分 类 号：TP301[自动化与计算机技术—计算机系统结构]