在建立了Ka频段固定卫星通信信道模型的基础上 ,对几种编码方式的性能进行了分析与仿真 .分析及仿真结果表明 :采用足够内交织深度的级联码系统的BER性能及带宽效率均较好 .特别是内码为P TCM的级联码系统 ,在基本不扩展占用频带的情况下 ,还可以获得可观的编码增益 ,因此特别适用于Ka频段的宽带数据传输 .研究结果还表明 :采用内分组交织可以有效地抵抗Ka频段卫星通信信道的非频率选择性慢衰落 . Based on the established Ka-band fixed satellite communication channel model, the performance of several coding schemes are analyzed and simulated.The analysis and simulation results show that both BER performance and bandwidth efficiency of a concatenated code system with enough inner interleave depth Especially in the case of the concatenated code system whose inner code is P TCM.It can also obtain considerable coding gain even without extending the occupied frequency band.It is especially suitable for broadband data transmission in Ka band.The results also show that: Inter-packet interleaving can effectively resist the non-frequency selective slow fading in Ka-band satellite communication channel.