油井下声传输系统中卷积编码的Matlab仿真  

Matlab simulation of convolutional encoding in acoustic logging transmission system

作　　者：蔡小庆[1] 鲁小利[1] 陈晓芳[1] 母俐丽[1] 

机构地区：[1]北京化工大学北方学院,河北廊坊065201

出　　处：《现代电子技术》2013年第17期135-136,共2页Modern Electronics Technique

摘　　要：为了实现钻井过程中井下信息的实时测量和上传,采用声波作为载波是一种很有发展前景的方法。对随钻数据声波传输系统中的调制技术和编码解码方法进行了Matlab仿真,结果表明:采用QPSK调制技术和1/3编码效率的卷积编码能提高数据通信的可靠性,降低系统的误码率。The acoustic wave data transmission is a promising method to realize real-time measurement and uploading of the downhole information in the process of drilling. The modulation technology and coding/decoding method of the LWD data sound wave transmitting system were simulated in Matlab. The results show that the convolutional encoding with QPSK modula-tion technology and 1/3 coding efficiency can improve the reliability of the data communications and lower the bit error rate of the system.

关 键 词：随钻数据传输 卷积编码解码 调制解调 MATLAB仿真 

分 类 号：TN911.7[电子电信—通信与信息系统] TP393[电子电信—信息与通信工程]