JOINT SOURCE-CHANNEL CODING FOR MULTI-CARRIER MODULATION

Methods and systems employing combined source-channel coding for multi-carrier modulation (MCM). In some embodiments, a described method comprises: estimating channel gain to noise ratio (CGNR) as a function of frequency bin; determining MCM parameters that minimize distortion of one or more telemet...

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Bibliographische Detailangaben
Hauptverfasser:	GARDNER, WALLACE R, MEMARZADEH, MAHSA, JOHNSON, DON HERRICK
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BROADCAST COMMUNICATION CHEMISTRY COMPOSITIONS BASED THEREON DETECTING MASSES OR OBJECTS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY GEOPHYSICS GRAVITATIONAL MEASUREMENTS MEASURING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION TESTING THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
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Beschreibung
Zusammenfassung:	Methods and systems employing combined source-channel coding for multi-carrier modulation (MCM). In some embodiments, a described method comprises: estimating channel gain to noise ratio (CGNR) as a function of frequency bin; determining MCM parameters that minimize distortion of one or more telemetry signals; generating a communications signal using the MCM parameters, and transmitting the communications signal via a communications channel. The MCM parameters may be determined by minimizing a telemetry signal distortion measure subject to CGNR and a transmit power constraint. The MCM parameters may further account for differing fidelity requirements when multiple telemetry signals are being transmitted.