摘要
文章简要介绍了UHF频段在军事卫星通信中的应用特点,提出一种UHF频段极低速率通信信号合成方案。针对合并过程中信道产生的随机相位偏移,采用相位搜索的方法对相移进行补偿。仿真结果表明,提出的合成方案能够有效工作,误码性能接近单路传输的理论水平,并且随着合并次数及相位搜索补偿次数的增多,性能越好,但复杂度会有所提高。
The application character of Ultra High Frequency（UHF） in the military satellite communication was introduced,and a signal combining method at extremely low rate in UHF was proposed.Given the character of the random phase deviation that was brought by the channel,this paper presented a method of phase searching to compensate phase deviation.Simulation results show that the proposed combining method can work normally,and symbol error rate was closed to the theoretic level when transmitted in single channel.Along with more times of combining and phase searching compensation,symbol error rate performance was more better but with more complexity.
出处
《无线通信技术》
2011年第1期7-10,共4页
Wireless Communication Technology
关键词
极低速率
信号合成
相位补偿
extremely low rate
signal combining
phase compensation
