首页> 外文会议>IEEE Vehicular Technology Conference >Modulation techniques for digital cellular systems
【24h】

Modulation techniques for digital cellular systems

机译:数字蜂窝系统的调制技术

获取原文

摘要

A modulation technique is described that uses the properties of linear modulation techniques to achieve high spectral efficiency. When combined with high-quality low-bit-rate speech coding and channel coding, linear modulation provides a substantial increase in system capacity. A QDPSK system provides high-quality speech using a 10-kHz bandwidth, with better S/I protection ratios than the current analog system. A digital cellular system which uses QDPSK is discussed. Bit error rate and spectral efficiency data are presented.
机译:描述了一种使用线性调制技术的性质来实现高光谱效率的调制技术。当与高质量的低比特率语音编码和信道编码结合时,线性调制提供了系统容量的显着增加。 QDPSK系统使用10 kHz带宽提供高质量的语音,具有比当前模拟系统更好的S / I保护比。讨论了使用QDPSK的数字蜂窝系统。呈现误码率和频谱效率数据。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号