无线电通信业务

国际固定通用无线电通信业务

International fixed public radio communication service

上海电信固网综合短信中心开发与建设国际固定通用无线电通信业务

The Developement and Construction of Shanghai NGN Short Message Center international fixed public radio communication service

公用无线电通信业务

Public radio communications services

第四章详细设计了对各类无线电通信业务系统台站数据的完整性、准确性检验的方法。

The forth chapter illustrated the design of integrity and accuracy inspecting to the data of radio stations of each radio communication system .

双向无线电通信，收发业务全双向：数据同时的接收及传发。

Transmitting and receiving service Full duplex : Data transmission in both directions simultaneously .

针对给定的分析带宽，认知无线电系统根据其通信业务需求合理地设定干扰门限，进而来判定环境感知信号的干扰是否超出该门限，从而判决出该频带的空洞情况。

For a given frequency band , a reasonable threshold of the interference is set according to the communication service requirements of cognitive radio . It is decided whether the threshold is exceeded by the interferences from the sensed signals and the spectrum holes are detected through the decision .