【摘要】 介绍了一种新的恒包络调制技术， 即ＦＱＰＳＫ Ｍｏｄｅｍ 家族。该Ｍｏｄｅｍ 家族的频谱效率、功率效率和误码率等性能优良，能明显增大系统的容量，而且电路结构简单，对于卫星通信和陆地移动通信，尤其是蜂窝系统来说，是一种优良的调制方案。更多还原

【Abstract】 A new constant_envelope modulation technique, FQPSK modem family is described in the paper. It is found the spectrum and power efficiency and BER which have excellent characteristics can enhance the system capacity, the circuit structure is also simple. Therefore this modem family is an excellent method for the application in satellite communications and land mobile communications, especially for the cellular systems.更多还原