摘要
介绍了广播数据系统（ＲａｄｉｏｎＤａｔａＳｙｓｔｅｍ，简称ＲＳＤ）利用现有调频立体声电台，在其基带频谱的上边界外（５７ｋＨｚ±２ｋＨｚ处）附加一块用ＤＰＳＫ方式调制的数据信息的频谱（一般称其为附加信近）多工地传送广播信息的基本原理，讨论了发端编码器的结构、实现方案以及波形成形截短的影响，并给出了一个实际模型。
This paper introduces the basic principle of radio system (RDS) whichuses the exist FM Radio station to multiplexing transmission of the srbsidiarry communication information. This subsidiary information is located at the beyond the up-end of baseband spectrum of FM sterio broadcast ,57kHz±2kHz,in DPSK modulation .It also discusses thestructure and implementation scheme of transmitter encoder, describes the shapping method ofdigital waveform and discusses the effect due to the shapping truncation .Finally, a a practicaltransmitter encoder model is given.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
1994年第4期344-350,共7页
Journal of University of Electronic Science and Technology of China
基金
电子部预研基金
关键词
广播数据系统
附加信道
编码器
RDS
sub-channels
frame structure error-correction
offset words
waveform shapping
