PPM/CDMA方式を用いた無指向直射室内光無線通信システムの誤り率特性に関する検討

概要

論文の詳細を見る
Code division multiple access (CDMA) scheme is a current subject of great interest as a multiple access scheme for indoor optical wireless communication system. In this paper, we discuss the performance of line-of-sight indoor optical wireless communication system using PPM/CDMA scheme. At first, we evaluate the downlink and uplink performances and show that, because of multiple access interference, the number of accommodated terminals and the coverage area are much restricted. In order to obtain the large number of accommodated terminals and large coverage area, we propose a new zone construction method which divides the communication channels spatially. Numerical results conclude that the number of accommodated terminals and coverage area can be much improved by using proposed zone construction.
社団法人映像情報メディア学会の論文
1998-02-12