Implementation of channel demodulator for DAB system

This paper describes the VLSI implementation of Fast Fourier Transform (FFT) for the Eureka-147 Digital Audio Broadcasting (DAB) system. We emphasize how to minimize the hardware requirement and efficiently manage the memory to meet the DAB requirement. Implementation results demonstrate the applicability of our work with the characteristics of modular design, consuming less silicon area, and facilitating the extension for high transmission rate applications. The core size of the resulting chip implementation is 2086×1806 μm² based on the TSMC 0.35 μm 1P4M CMOS process. Performance evaluation reveals that our design for the targeted channel demodulator outperform previous solutions.