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A communication system by code modulation is described which incorporates an integration process in the original delta modulation system and is named delta-sigma modulation after its modulation mechanism. It has an advantage over delta modulation in dc level transmission and stability of performance, although both require essentially an equal bandwidth and complexity of circuitry. An experimental telemetering system employing delta-sigma modulation is also described.
Space Electronics and Telemetry, IRE Transactions on (Volume:SET-8 , Issue: 3 )
Date of Publication: Sept. 1962