Scintillation reduction using multi-beam propagating technique in atmospheric WOCDMA system  

作　　者：赵雅琴 许丹丽 钟鑫 

机构地区：[1]School of Electronics and Information Engineering,Harbin Institute of Technology

出　　处：《Chinese Optics Letters》2011年第11期77-80,共4页中国光学快报（英文版）

基　　金：supported by the Science and Technology Innovation Talents Special Funds of Harbin,China (No. 2009RFQXG056);the Natural Science Foundation of Heilongjiang Province of China (No. F200910);the Fundamental Research Funds for Central the Universities (No. HIT.NSRIF.201151)

摘　　要：We propose employing multi-beam propagating technology to mitigate the influence of atmospheric scintillation to the wireless optical code division multiple access （WOCDMA） system and then deduce the bit error rate （BER） formulas of systems in weak and strong scintillations,respectively.According to simulation experiment results,multi-beam propagation can improve the system performance very well compared with single-beam propagating technique.Moreover,the more beams we use,the better the performance we get.When the received optical power is-30 dBm,the BER of the system employing four beams is 5 and 1 dB lower than that of using single-beam propagating technique in weak and strong scintillations,respectively.We propose employing multi-beam propagating technology to mitigate the influence of atmospheric scintillation to the wireless optical code division multiple access （WOCDMA） system and then deduce the bit error rate （BER） formulas of systems in weak and strong scintillations,respectively.According to simulation experiment results,multi-beam propagation can improve the system performance very well compared with single-beam propagating technique.Moreover,the more beams we use,the better the performance we get.When the received optical power is-30 dBm,the BER of the system employing four beams is 5 and 1 dB lower than that of using single-beam propagating technique in weak and strong scintillations,respectively.

关 键 词：Bit error rate Code division multiple access 

分 类 号：TN929.533[电子电信—通信与信息系统]