Patent ID: 8897353
Filing Date: 2014-11-25
Classification: H04L

Abstract:
1. An OFDM receiver that determines a time domain channel impulse response, the receiver comprising: a filter that receives OFDM symbols, the filter comb filtering and puncturing OFDM symbols to provide punctured OFDM symbols having pilot information and having at least some data information removed; punctured OFDM symbol storage to receive and store a number of punctured OFDM symbols; a virtual pilot generator coupled to the punctured OFDM symbol storage to generate virtual pilot information for a plurality of OFDM symbols based on one or more of the punctured OFDM symbols, the virtual pilot information based at least in part on the pilot information; a time domain channel estimator that processes a first punctured OFDM symbol including virtual pilot information to generate a channel impulse response for the first OFDM symbol; and a frequency equalizer that equalizes the first OFDM symbol in response to the channel impulse response for the first OFDM symbol.