ASIC Design of OFDM Decoder Used in a Digital Audio Broadcasting Receiver

摘要

The Digital Audio Broadcasting (DAB) system can provide audio in near CD quality and multimedia service to mobile, portable and fixed receivers. DAB system adopts the modulation method of Orthogonal Frequency Division Multiplexing (OFDM), which overcomes the adverse effects of severe multi-path propagation, im mobile reception. This paper presents an ASIC design of OFDM decoder used in a DAB receiver, which acomplishes the functions of FFT and DQPSK demodulation.