Abstract
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 a speech signal and transmitted through an analog telephone channel. In this method, the speech signal acts as noise for the data channel, and the digital signal acts as noise for the speech channel. Direct sequence modulation is employed for data transmission. A data rate of 22 bps is achieved at the BER of 10/sup -3/ when the noise is almost not perceived.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
