论文部分内容阅读
本文阐述VHF和UHF地面移动电话数字调制技术。在介绍VHF与UHF地面移动电台信道窄带数字话音传输的话音编码和数字调制以后,数字移动电话的可用性则由对满足要求的数字调制之现实性和若干试验结论来加以说明。已列举一些遗留的问题,这些问题在最近将得以解决。
This article describes VHF and UHF terrestrial mobile phone digital modulation techniques. After introducing the speech coding and digital modulation of narrowband digital voice transmission over VHF and UHF terrestrial mobile stations, the availability of digital mobile phones is illustrated by the reality of digital modulation to meet the requirements and several experimental conclusions. A few remaining issues have been listed and these will be resolved recently.