Method for data communication via a voice channel of a wireless communication network
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United States of America Patent
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Jun 5, 2012
Grant Date -
Apr 26, 2007
app pub date -
Oct 24, 2005
filing date -
Oct 24, 2005
priority date (Note) -
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Abstract
A system and method for data communication over a cellular communications network that allows the transmission of digital data over a voice channel of the communications network. Digital data is encoded into DBPSK data using differential binary phase shift keying encoding. The DBPSK data is then sent across the cellular network using a vocoder having a linear predictive or other speech compression codec. At the receiving end, the DBPSK data is demodulated back into the original digital data. This approach permits data communication via a CDMA, GSM, or other type of voice traffic channel at a low bit error rate.
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