A zero-beat interference rejection method for television relay station

Abstract

We have developed a new signal processing method for rejection of zero-beat interference for television relay station. An received interference component under some kHz is extracted by horizontal synchronous sampling, and by adding this signal to received carrier in opposite phase, we can get the television carrier without interference. In conventional way a synchronous broadcast have been under practive for improvement of reception quality, but this method employs a simple idea and its cost is lower.