Patent ID: 8660198
Filing Date: 2014-02-25
Classification: H04L

Abstract:
1. A circuit for generating K in-phase and quadrature complex Fourier coefficients based on an OFDM signal modulated by a carrier frequency and having K sub-carriers, comprising: a sampling clock generator configured to generate an in-phase sampling clock and a quadrature sampling clock, the quadrature sampling clock being ninety degrees out of phase with the in-phase sampling clock, and the in-phase sampling clock and the quadrature sampling clock having the same frequency; a quadrature bandpass-sampling delta-sigma analog-to-digital demodulator (QBS-ADD) configured to first through P a maximal ratio combiner configured to wherein i is a first index value that varies from 1 to P, and represents a numeric identifier of one of the first through P wherein D is equal to the period of the in-phase sampling clock, wherein j is a second index value that varies from 1 to K, and represents a numeric identifier of one of first through K wherein P and K are integers greater than 1.