System and method of an in-band modem for data communications over digital wireless communication networks

A system is provided for transmitting information through a speech codec (in-band) such as found in a wireless communication network. A modulator transforms the data into a spectrally noise-like signal based on the mapping of a shaped pulse to predetermined positions within a modulation frame, and t...

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Bibliographic Details
Main Authors SGRAJA CHRISTIAN, PIETSCH CHRISTIAN, GRANZOW WOLFGANG, WERNER MARC W, JOETTEN CHRISTOPH A, HUANG PENGJUN, LEUNG NIKOLAI K. N
Format Patent
LanguageEnglish
Published 24.02.2015
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TELEPHONIC COMMUNICATION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
WIRELESS COMMUNICATIONS NETWORKS
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Summary:A system is provided for transmitting information through a speech codec (in-band) such as found in a wireless communication network. A modulator transforms the data into a spectrally noise-like signal based on the mapping of a shaped pulse to predetermined positions within a modulation frame, and the signal is efficiently encoded by a speech codec. A synchronization sequence provides modulation frame timing at the receiver and is detected based on analysis of a correlation peak pattern. A request/response protocol provides reliable transfer of data using message redundancy, retransmission, and/or robust modulation modes dependent on the communication channel conditions.
Bibliography:Application Number: US20090477626