首页> 外文会议>55th International Astronautical Congress 2004 vol.8 >BROADCAST OF DIGITAL RADIO SERVICES FOR MOBILE USERS USING A FIXED FREQUENCY IN THE KA-BAND
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BROADCAST OF DIGITAL RADIO SERVICES FOR MOBILE USERS USING A FIXED FREQUENCY IN THE KA-BAND

机译:使用KA频段中的固定频率为移动用户广播数字无线电服务

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This paper deals with the possibility of receiving radio on the mobile through a direct link with non-geostationary satellite. A frequency in Ka-band is chosen by all the satellites of the constellation to broadcast the radio. Each radio station is identified with a CDMA code and transmitted to the mobile terminal on the selected frequency. The mobile, tuned always to this fixed frequency, will demodulate the desired radio channel using its respective CDMA code. To give the necessary support to the idea, a theoretical analysis of the different communication requirements is performed in this paper. The viability of the service is inferred from the calculations made on link budget, which gives a final definition of the structure and system characteristics that will support this service.
机译:本文探讨了通过与非对地静止卫星直接链接在移动台上接收无线电的可能性。星座中的所有卫星都选择Ka频段的频率来广播无线电。每个无线电台都用CDMA码标识,并以选定的频率发送到移动终端。总是调谐到该固定频率的移动台将使用其各自的CDMA码来解调所需的无线电信道。为了给这个想法提供必要的支持,本文对不同的通信需求进行了理论分析。该服务的可行性是根据对链路预算进行的计算得出的,计算得出了支持该服务的结构和系统特性的最终定义。

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