Optimal Selection of Cyclic-prefix and Sub-carrier for OFDM Signal in Mobile Satellite Communications Channel
Adapted parameters of OFDM signals can bring performanee improvement in mobile satellite communications.This paper firstly analyzes the effect of cyclic-prefix (CP) length and sub-carrier bandwidth on system interference and capacity.This effect can be described by a formula which consists of system capacity,CP length and sub-carrier bandwidth.Then using this formula,a method to select the optimal parameters is given.In the end,a numerical calculation is performed to figure out the optimal parameters,considering the multipath delay spread and Doppler spread in satellite channel.It comes up that in satellite channel the CP is not very effective to improve the system performance and a wider sub-carrier bandwidth is desired.
mobile satellite communication OFDM CP length sub-carrier bandwidth
Bin Li Wei Zheng Shubo Ren Jianjun Wu
Institution of Advanced Communications, EECS, Peking University, Beijing, 100871
国际会议
太原
英文
558-561
2012-12-08（万方平台首次上网日期，不代表论文的发表时间）