Transmission of data on analog speech channel by spread spectrum modulation

被引：0
|
作者：
Suzuki, J
Hingdi, B
Yashima, H
机构：
来源：
1997 IEEE PACIFIC RIM CONFERENCE ON COMMUNICATIONS, COMPUTERS AND SIGNAL PROCESSING, VOLS 1 AND 2: PACRIM 10 YEARS - 1987-1997 | 1997年
关键词：
D O I：
暂无
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
Sometimes it is requested to transmit data together with speech signal through a telephone channel. This paper proposes that low bit-rate of digital data are spread over on speech signal and transmit them through an analog telephone channel. Tn this method, speech signal is noise against data and SS signal is perceived as noise for speech. Direct sequence modulation is employed for data transmission. Data rate of 22 bps is achieved at the BER of 10(-3) when they are not almost perceived.
引用
收藏
页码：697 / 700
页数：4
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