Research On Channel Allocation Scheme In DWCS Based On60GHz

In order to fundamentally improve system capacity and transmission rate, DWCS (Distributed Wireless Communication System), which is a kind of new communication system, breaks the traditional cellular system structure, using the distributed structure and distributed processing method and in combination with the characteristics of distributed antenna system. Compared with the existing cell system, DWCS shows the advantage of higher capacity, easier to adjust to the development of the future of mobile communication system. At the same time, it is necessary to improve the working frequency to meet the requirements of further improving the transmission rate of the wireless system and realizing the broadband communication. Because of special permission from sex and high rate of transmission bandwidth etc,60GHz millimeter wave becomes the research focus in the field of wireless communication.Channel allocation is one of the key points of research for communication system wireless resource management technology. DWCS channel allocation scheme has already obtained some research achievements. This thesis focuses on the study of dynamic channel allocation scheme based on channel switching. Cellular systems are limited in improving spectrum efficiency, and it is hard to realize the seamless coverage of millimeter wave, so this system can’t meet people’s need of high rate of data. In view of the above two problems, the paper will base on the structure of the DWCS features and advantages, and contrast cellular village communication system, to summary the advantage of improving the utilization ratio of frequency spectrum and the realization of millimeter wave wireless coverage for DWCS.The dissertation firstly discusses the scheme and algorithm of channel allocation in traditional communication system. Through the comparison of some typical channel allocation scheme, an analysis the advantages and disadvantages of each algorithm has been done. Secondly, basing on the characteristics of60GHz millimeter wave, and a summary of the existing algorithm of DWCS, a choice of the most reasonable distribution algorithm is made and a further improvement program is designed. In the end, a model is established for60GHZ wireless channels together with DWCS, and the simulation analysis job is introduced based on the dynamic exchange channel allocation scheme and the improvement program, with the help of the OPNET network simulation software.