紫外光通信SDPPM调制解调系统设计

巩稼民; 王智龙; 汤琦; 李春燕; 蒋亮

doi:doi:10.13756/j.gtxyj.2018.01.017

光通信研究, 2018 (1): 66, 网络出版: 2018-04-09

紫外光通信SDPPM调制解调系统设计

Design of SDPPM Modulation and Demodulation System for Ultraviolet Optical Communication

论文大纲

巩稼民王智龙 ^*汤琦李春燕蒋亮

作者单位

西安邮电大学电子工程学院，西安 710121

分离双脉冲位置调制紫外光通信帧同步调制解调 SDPPM UV communication frame synchronization modulation and demodulation

摘要

为了降低紫外光通信中多径色散效应对系统性能的影响，提高传输信道抗干扰能力，选用分离双脉冲位置调制(SDPPM)方案完成紫外光通信系统的设计。该调制方式脉冲相互分离，具有较强的抗干扰能力，可有效解决码间串扰问题。通过对SDPPM符号结构的分析，基于现场可编程门阵列对SDPPM调制解调系统进行设计，特别对解调系统的帧同步做了详细说明。使用甚高速集成电路硬件描述语言在ISE 14.7软件上完成代码编写，并用Modelsim 10.1a进行了时序仿真，进一步验证了调制方案的可行性。

Abstract

In order to reduce the influence of multipath dispersion effect on system performance and improve the anti-jamming capability of transmission channel, Separated Dual Pulse Position Modulation (SDPPM) scheme is used to complete the design of UV communication system. The pulse positions are separated from each other in SDPPM modulation symbols, which can effectively solve the inter-symbol interference problem. After the analysis of the SDPPM modulation symbol structure, SDPPM modulation and demodulation system is designed based on Field Programmable Gata Array (FPGA). The frame synchronization of demodulation system is specifically described in detail. We use VHDL language in ISE 14.7 software to complete the code and Modelsim 10.1a for the timing simulation, which further demonstrate the feasibility of the modulation scheme.

参考文献

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巩稼民, 王智龙, 汤琦, 李春燕, 蒋亮. 紫外光通信SDPPM调制解调系统设计[J]. 光通信研究, 2018, 44(1): 66. GONG Jia-min, WANG Zhi-long, TANG Qi, LI Chun-yan, Jiang Liang. Design of SDPPM Modulation and Demodulation System for Ultraviolet Optical Communication[J]. Study On Optical Communications, 2018, 44(1): 66.

紫外光通信SDPPM调制解调系统设计

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