Adaptive equalisation of television systems

The introduction of long transmission paths with time varying characteristics, television relay switching facilities and colour television creates the need for high quality adaptive equalisation of television signals. The purpose of this thesis is to investigate techniques which may be used to provide such an adaptive equalising facility. An adaptive equaliser is defined as one which can track a time varying transmission channel characteristic. A discussion of the adaptive equaliser best suited to the requirements of the television system is presented and a detailed theoretical and practical investigation of this equaliser undertaken. The practical investigation was made possible with the construction of an experimental equalising system.