Patent ID: 8279958
Filing Date: 2012-10-02
Classification: H04L

Abstract:
1. A receiver for receiving a sequence of Orthogonal Frequency Division Multiplexed (OFDM) symbols transmitted via a channel, each OFDM symbol comprising a plurality of data bearing sub-carriers on which data is transmitted and a plurality of pilot bearing sub-carriers on which pilot data is transmitted, the pilot sub-carriers being arranged within the OFDM symbols in accordance with a pilot sub-carrier pattern, the receiver comprising: a channel estimator which includes a discontinuity detector that detects a discontinuity in the pilot data contained within the received OFDM symbols; and a controller which upon detection of a pilot data discontinuity by the discontinuity detector is operable to provide a control signal to the channel estimator which causes at least one of the a pilot data extractor, the pilot data extrapolator and the pilot data interpolator to compensate for the pilot data discontinuity in the pilot data.