DIGITAL BROADCAST TRANSMITTER/RECEIVER HAVING AN IMPROVED RECEIVING PERFORMANCE AND SIGNAL PROCESSING METHOD THEREOF

摘要

A digital broadcast receiver comprises a tuner for receiving a stream, a demodulator for demodulating the received stream and an equalizer for equalizing the demodulated stream. The stream is transmitted from a digital broadcast transmitter which includes a Trellis encoder having a first memory and a first multiplexer (MUX) for outputting an input signal or a value stored in the first memory according to a control signal and a first adder for adding a value output by the first MUX and the value stored in the first memory. The Trellis encoder further includes a second memory, a third memory to be connected to the second memory and store a value shifted from the second memory, a second MUX for outputting an input signal or a value stored in the third memory according to the control signal, and a second adder for adding a value output by the second MUX and the value stored in the third memory and providing the second memory with the added value.