摘要
使用Ka频段是卫星通信系统解决信道拥挤和提高系统容量的有效途径。为了提高Ka频段卫星通信的传输性能,本文在对Ka频段固定卫星通信信道进行分析的基础上,提出了一种适合该信道的Turbo码编译码方案,译码时通过使用修正的信道可靠性常数极大地提高了译码性能。最后,利用Ka固定卫星通信信道模型对该Turbo码方案性能进行了仿真。仿真结果表明,本文采用的Turbo码方案与采用相同码率的卷积码和卷积级联码方案相比,所带来的增益大于1.5dB。
Moving to Ka-band is an effective way of solving closed orbits and improving system capacity for the satellite communication. Based on the analysis of Ka-band fixed satellite communication channel, a Turbo coding scheme is present suit for the channel,having better performance improvement through using optimized channel constant. A model of Ka-band fixed satellite communication channel and a corresponded simulation system with the Turbo coding scheme are created. Simulation results show that the Turbo coding has more 1. 5dB gain than convolution coding or convolution concatenated coding.
出处
《电子测量技术》
2007年第1期116-118,共3页
Electronic Measurement Technology
