FAST FOURIER TRANSFORM PROCESSING IN AN OFDM SYSTEM

摘要

FFT processor for an OFDM receiver includes multiple interrelated operational blocks. The FFT processor is configured to demodulate data on received OFDM symbols, to perform channel estimation and fine timing acquisition. The FFT processor incorporates a pipelined FFT engine using a memory architecture shared with channel estimation and demodulation blocks. Enables the combination of the shared memory structure and the pipelined FFT operation for the next time it may be used to capture the received symbol channel estimation and demodulation processing is complete.