说明：  设计并仿真了适合Ka 频段卫星移动信道的信号传输体制仿真结果为最终实现方案提供 了可靠的数据同时针对所设计的Turbo 编码和GMSK 调制相结合的信号传输体制提出了迭 代信道估计算法明显改善了系统的误码率BER 性能
(Designed and simulated for Ka-band mobile satellite channel signal transmission system simulation results for the final program provides reliable data also for the design of the Turbo coding and GMSK modulation combined signal transmission system proposed iterative channel estimation algorithm significantly improved the system bit error rate BER performance)