纠错码在无线激光通信中的应用

The Application of Error-Correcting Code in the Wireless Laser Communication

摘要: 无线激光通信是指以激光为载体，在真空或者大气中传输数据的通信技术，在无线激光通信链路中，由于受到大气湍流的影响，通信接收端收到激光信号起伏不定，造成了误码的产生。链路设计中不采用纠错码很难保证低误码率的要求，因此在无线激光通信中，一般都采用纠错码。本文分析了几种常用的纠错码，在此基础上设计了一种RS码，并在实际的大气通信中加以应用，给出了不加纠错码和采用纠错码的试验结果，表明RS码能有效降低系统的误码率。

Abstract: Wireless laser communication refers to a technology of transmitting the information by laser carrier through the vacuum or atmosphere. In the laser communication the signal of receiver will become stronger or weaker, for falling under the atmosphere turbulence. So the error-correcting code was designed for the communication commonly. This article introduced the RS code, Turbo code and LDPC code. In the real system of wireless laser communication the RS code was used. At last of paper the result of experiment was showed between encoding and non-encoding. The result showed that the RS code can reduce the error-code-rate of system effectively.