Patent ID: 7738357
Filing Date: 2010-06-15
Classification: H04B,H04L

Abstract:
1. A method for correcting carrier frequency offset (CFO) in a communication system receiving a plurality of data packets, each data packet including multiple data streams (M), each data packet having a payload portion including a number (L) of data symbols, each data symbol having a number (K) of tones, the method comprising: for an l (a) generating a per-tone CFO estimate (p (b) assigning a weight to each p (c) generating a per-symbol CFO estimate (p (d) assigning a weight to each p (e) generating a per-stream CEO estimate (p (f) assigning a weight to each p (g) generating a single data CEO estimate (p (h) generating a packet CEO estimate (p (i) correcting the CEO in each data stream according to p (j) repeating steps (a) through (i) for each data symbol in the data packet.