New hybrid reverse differential pulse position width modulation scheme for wireless optical communication
New hybrid reverse differential pulse position width modulation scheme for wireless optical communication
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DOI：
10.1117/1.oe.53.5.056112
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发表时间：
2014-05
影响因子：
1.3
通讯作者：
Renbo Liao;Hongzhan Liu;Yaojun Qiao
中科院分区：
文献类型：
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作者：
Renbo Liao;Hongzhan Liu;Yaojun Qiao
抽象的。为了提高无线光通信中反向差分脉冲位置调制（RDPPM）的功率效率，降低其误包率，提出了一种基于RDPPM和反向脉冲宽度调制的混合反向差分脉冲位置宽度调制（RDPPWM）方案。随后，RDPPWM的符号结构进行了简要分析，其性能进行了比较与其他调制方案的平均发射功率，带宽要求，和分组错误率在理想的加性白色高斯噪声（AWGN）信道。基于给定的模型，仿真结果表明，该调制方案具有提高功率效率和降低带宽要求的优点。此外，就错误概率性能而言，RDPPWM可以实现比RDPPM低得多的误包率。例如，在相同的接收信号功率为-28 dBm时，RDPPWM的误包率可以降低到2.6×10−12，而RDPPM的误包率为2.2×10−8。此外，RDPPWM在接收端不需要符号同步。这些考虑使得RDPPWM成为选择作为WOC系统中的调制方案的有利候选者。
Abstract. In order to improve the power efficiency and reduce the packet error rate of reverse differential pulse position modulation (RDPPM) for wireless optical communication (WOC), a hybrid reverse differential pulse position width modulation (RDPPWM) scheme is proposed, based on RDPPM and reverse pulse width modulation. Subsequently, the symbol structure of RDPPWM is briefly analyzed, and its performance is compared with that of other modulation schemes in terms of average transmitted power, bandwidth requirement, and packet error rate over ideal additive white Gaussian noise (AWGN) channels. Based on the given model, the simulation results show that the proposed modulation scheme has the advantages of improving the power efficiency and reducing the bandwidth requirement. Moreover, in terms of error probability performance, RDPPWM can achieve a much lower packet error rate than that of RDPPM. For example, at the same received signal power of −28 dBm, the packet error rate of RDPPWM can decrease to 2.6×10−12, while that of RDPPM is 2.2×10−8. Furthermore, RDPPWM does not need symbol synchronization at the receiving end. These considerations make RDPPWM a favorable candidate to select as the modulation scheme in the WOC systems.