| 摘要: |
| 提出了一种新型无线窄带通信系统的设计方案，该方案基于数字化的信源和信道编码
方法，采用了两点调制和二次调制等技术，可兼容欧洲公众数字对讲机标准(DPMR)，并通过
研制得以实现。实测结果表明，系统接收灵敏度达-110 dBm，可满足远距离无线语音通
信和
中低码率的数据通信的要求。 |
| 关键词: 数字通信 窄带通信 语音通信 两点调制 二次调制 |
| DOI： |
|
| 基金项目:国家高技术研究发展计划(863计划)项目(2011AA100701) |
|
| Design and implementation of a novel wireless narrow-band digital communication system |
| GAO Xiang,JIA Si-qiang,YANG Xu,LU Qi-yong |
| () |
| Abstract: |
| A method is proposed about the design of a novel wireless narrow-band
communication system. The method is based on digital source coding and digital c
hannel coding. The method employs techniques such as two-point modulation and s
e
cond modulation, which is compatible with the standard of Digital Private Mobile
Radio (DPMR). The method is implemented through research and development. The r
esult of experiments shows that the receiving sensitivity of the system reaches
-110 dBm. The system can meet the demands of long-distance voice communicat
ion or long-distance data communication with medium or low bit rate. |
| Key words: digital communication narrow-band communication voice communication two-poi
nt modulation second modulation |
《电讯技术》编辑部 