Patent ID: 8175142
Filing Date: 2012-05-08
Classification: H03M,H04L,H04N

Abstract:
1. A data processing apparatus configured to map data symbols received from a predetermined number of sub-carrier signals of Orthogonal Frequency Division Multiplexed (OFDM) symbols into an output data stream, the predetermined number of sub-carrier signals being determined in accordance with one of a plurality of operating modes and the data symbols including first sets of data symbols and second sets of data symbols, the data processing apparatus comprising: an address generator, a controller, and a de-interleaver memory, the controller being configured, when operating in accordance with an even de-interleaving process to read out from the de-interleaver memory a first set of the data symbols into the output data stream using read addresses determined in accordance with a sequential order, and the number of the sub-carriers that are available from a previous odd or even OFDM symbol is different from the number of the sub-carriers that are available from a current OFDM symbol, and the controller is configured