error detektorsystem with non redundant error correction for satellite communication systems

摘要

SpecificationTitle of the InventionDifferential Detection Systems withNon-redundant Error CorrectionAbstract of the DisclosureThe differential detection system comprises ademodulator for a modulated carrier transmission systemfor binary signals, in which a symbol detected from thephase difference between the received signal delayed by onesignaling interval and the signal received in the presentsignaling interval is converted into data and a symboldetected from the phase difference between the receivedsignal delayed by two signaling intervals and a signalreceived in the present signaling interval is converted intoparity. The data and the parity are applied to a decoderfor a rate 1/2 single error correcting self-orthogonalconvolutional code effecting demodulation with non-redundant error correction. The correction system is alsoapplicable to demodulate a carrier wave modulated by m(an integer) level digital data.