Performance of a Digital Data Transmission System Using Matched Filter Processing of an Auxiliary Signal for Synchronization

摘要

In digital communication, coherent systems are used in order to provide small probability of error with small signal-to-noise ratios. In this report a digital communication system (transmitter and receiver) is presented which uses noncoherent carrier demodulation and coherent bit recovery utilizing an integrate-and-dump detector. The synchronization (timing) pulses for this detector are derived from the response of a matched filter to the low level synchronization signal transmitted with high level data modulated carrier. This system is designed, built and tested; noise is added to simulate the channel. Probability of error versus signal-to-noise ratio curves are plotted to obtain system performance. (Author)