An Orthogonal Space-time Block Code with Q-PPM Modulation
Orthogonal space-time block code (OSTBC) can greatly improve transmit speed rate and mitigate the effect caused by atmospheric turbulence, furthermore it can reduce the error rate in the wireless optical communication system. In this paper, the model of the multiple input multiple output (MIMO) wireless optical communication about the Gaussian channel is proposed. And an orthogonal space-time block codes using pulse position modulation (PPM) is advised. Then the maximum likelihood decision rule and the symbol error probability (SEP) is deduced. At last, the feasibility of this technique is proved by simulation experiment, and moreover our code is compared with the complement orthogonal spacetime block code (COSTBC). The experiment results show that our code is an effective fading-mitigation technique to overcome scintillation effect and can achieve the 1 speed rate transmission in free space optical communication system.
free space optical communication MIMO OSTBC pulse position modulation
Wang Huiqin Jia Kejun
College of Computer and Telecominication Lanzhou Univ.of Tech Lanzhou, China
国际会议
太原
英文
111-115
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）