TRANSMISSION SYSTEM USING TRANSMITTER FOR RANDOMIZED TRAINING SEQUENCE TO MINIMIZE INTERFERENCE IN DIGITAL TRANSMISSION

摘要

PURPOSE: To minimize interference to another system caused by the periodicity of training signal by inverting the selected training signal from a training signal source before connecting it to a data packet. CONSTITUTION: A training sequence supplied by a training sequence buffer 25 is inputted to a training sequence inverter 20. The inverter 20 inverts the selected training sequence at random. The processed training sequence is inputted to an I and Q symbol rate multiplexer 56. The multiplexer 56 formats a data stream based on the time multiplex training sequence and the data packet. Thus, the periodicity of training signal is avoided.