Patent ID: 7995454
Filing Date: 2011-08-09
Classification: G06F,H03M,H04B,H04H,H04J,H04K,H04L,H04M,H04N,H04W,Y02D

Abstract:
1. A method for quality based assessments of orthogonal channels for remote service units of an OFDM based multiple access system, the method comprising: monitoring a first subset of orthogonal carriers within an OFDM waveform associated with at least one communication channel, wherein the first subset of orthogonal carriers comprises less than all of the orthogonal carriers within the OFDM waveform; monitoring a second subset of orthogonal carriers within the OFDM waveform associated with at least one communication channel, wherein the second subset of orthogonal carriers includes different orthogonal carriers than the first subset of orthogonal carriers; determining a first quality measurement for the first subset of orthogonal carriers; determining a second quality measurement for the second subset of orthogonal carriers; communicating a notification message regarding the quality measurements for the first subset of orthogonal carriers and the second subset of orthogonal carriers; and adjusting a frequency of upstream carriers of the OFDM waveform to maintain orthogonality within the OFDM waveform.