基于FPGA的紫外光调制技术研究  

Research on Modulation Technology of Ultraviolet Communication System Based on FPGA

作　　者：吕凤飞[1] 施军[1] 彭光辉[1] 刘星[1] 

机构地区：[1]重庆大学光电技术及系统教育部重点实验室,重庆400030

出　　处：《光电子技术》2013年第1期45-48,53,共5页Optoelectronic Technology

基　　金：国家自然科学基金资助(11075226)

摘　　要：为了提高紫外光通信系统的光功率利用率和降低该系统的误码率,提出了利用PPM和CRC码对紫外光通信系统进行研究的方法。主要是研究PPM调制和CRC码编码关键技术,包括PPM实现的方式、CRC算法的硬件实现、异步时钟域数据处理等。测试结果表明,设计的系统在数据传输速率为9.6Kb/s时,采用CRC反馈重发纠错模式,可以使误码率可以降低到10-6,实现PPM和CRC码在紫外通信系统中的应用。A modulation system based on PPM and CRC is utilized to improve the optical power efficiency and reduce the bit error rate. It mainly studys the key technology of the PPM modulation and the CRC encoded mode, including the approaches of PPM, the implementation of hardware of CRC and Asynchronous clock domain data processing, etc. The test results indicate that when the data is transported at 9.6 kb/s, bit-error probabilities can be descended to below 10.6 in designed system by using CRC error correction mode by feedback and retransmission. So the utilization of PPM and CRC in ultraviolet communication system has been proved.

关 键 词：脉冲位置调制 循环冗余校验码 现场可编程门阵列 紫外通信 

分 类 号：TN76[电子电信—电路与系统]