SYSTEM AND METHOD OF AN IN-BAND MODEM FOR DATA COMMUNICATIONS OVER DIGITAL WIRELESS COMMUNICATION NETWORKS,申请号EP20090789760-传众专利搜索

SYSTEM AND METHOD OF AN IN-BAND MODEM FOR DATA COMMUNICATIONS OVER DIGITAL WIRELESS COMMUNICATION NETWORKS

申请公布号：EP2289195(B1)

申请号：EP20090789760

申请日期：2009.06.05

申请公布日期：2015.07.22

申请人：

QUALCOMM INCORPORATED

发明人：LEUNG, NIKOLAI, K.N.;WERNER, MARC, W.;PIETSCH, CHRISTIAN;GRANZOW, WOLFGANG;SGRAJA, CHRISTIAN;JOETTEN, CHRISTOPH, A.;HUANG, PENGJUN

分类号：H04L1/00;H04L1/18

主分类号：H04L1/00

摘要：<p>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.</p>