Performance Analysis of Dicode Pulse Position Modulation for Optical Wireless Communications
This paper introduces a modulation scheme, Dicode Pulse Position Modulation (DiPPM) for optical wireless communications using intensity modulation with direct detection (IM/DD). The modulation structure of DiPPM and expressions for the bandwidth-utilization efficiency, average optical power requirement and packet error rate (PER) are presented. We show that there is a built-in error checking-out performance in DiPPM, and the PER performance for DiPPM can be improved about 3 dB by using automatic repeat request (ARQ) when an error is detected. And numerical simulation results show that, compared with OOK and 2-PPM, DiPPM displays lower packet error rate and higher power efficiency, compared with higher order PPM (bit resolution M＞2), DiPPM displays lower power efficiency and higher packet error rate but less bandwidth requirement.
optical wireless communications modulation scheme DiPPM
Hongxing WANG Gang CHENG Xiaoming SUN Tieying ZHANG
Department of Electronic and Information Engineering, NAEI Yantai, 264001, china
国际会议
上海
英文
2007-09-21（万方平台首次上网日期，不代表论文的发表时间）