摘要
在分析Ka频段静止卫星信道特点的基础上,建立了信道仿真模型并进行了基带仿真,研究了不同天气条件下静止卫星通信系统的误比特率性能,基于这一模型通过仿真研究了串行级联Turbo码在静止卫星信道条件下的性能。仿真结果表明,除了中雨、雷雨等恶劣天气状况之外,在通常的天气条件下,串行级联Turbo码可以提供约10 dB左右的编码增益,可有效改善系统性能。
On the basis of analyzing the characteristics of Ka-band motionless satellite channel, we construet a channel model and employ a simulation to study the performance of motionless satellite eommunication system in different atmosphere conditions. Then the serially-concatenated Turbo code is applied to the system model for the study of its error correction performance. The simulation results show that the serially-concatenated Turbo code can effectively improve the system performance by achieving a coding gain as high as 10 dB in common atmosphere conditions instead of moderate rain and thunder storm.
出处
《中国电子科学研究院学报》
2008年第6期618-622,共5页
Journal of China Academy of Electronics and Information Technology
