移动通信Issue(14)：52-55,61,5.
卫星带宽压缩技术在应急通信中的测试与应用
Test and Application of Satellite Bandwidth Compression Technology in Emergency Communication
康晨 1陈玥 1卢洪涛2
作者信息
- 1. 中国电信集团公司，北京 100032
- 2. 中国电信股份有限公司广州研究院，广东 广州 510630
- 折叠
摘要
Abstract
In order to effectively improve the efficiency of satellite bandwidth and transmit the CDMA signal with 2MHz bandwidth on the satellite transponder with 1MHz bandwidth, China Telecom carried out the on-site verification tests in several cities. Three technologies were tested respectively on the existing equipment including time slot drop and insert, carrier superposition and higher order modulation used for CDMA emergency communication vehicles. The test projects include subjective voice quality and call time delay of CDMA voice services and the actual throughput rate of CDMA data services. The results show that three technologies can satisfy the expected requirements of compression rate. Therefore, China Telecom can use satellite bandwidth compression on CDMA emergency communication vehicles to meet the demands of the current networks.关键词
应急通信/卫星带宽压缩/时隙插入取出/载波叠加/高阶调制Key words
emergency communication/satellite bandwidth compression/time slot drop and insert/carrier superposition/higher order modulation分类
信息技术与安全科学引用本文复制引用
康晨,陈玥,卢洪涛..卫星带宽压缩技术在应急通信中的测试与应用[J].移动通信,2014,(14):52-55,61,5.
