APPARATUS AND METHOD FOR BLOCK INTERLEAVING USING MIXED RADIX SYSTEM IN MB-OFDM

摘要

An apparatus and a method for block interleaving using a mixed radix system in an MB(Multi Band)-OFDM(Orthogonal Frequency Division Multiplexing) are provided to reduce power consumption, complexity, and time delay in an interleaving process and to comprise each cell of an array processor as a simple logic of two one-bit storage space and a switch by implementing an array processor structure. In a multi band orthogonal frequency division multiplexing communication system, an interleaving device(100) block-interleaves an input stream of M bit to be transmitted by a modular k. The interleaving device includes an array processor. The array processor has M cells composed of the array with k columns and an M/k rows. The array processor inputs the input stream from a right lower cell to a final cell of a left upper cell of the array processor in a horizontal direction. After a first bit of the input stream reaches the final cell, the output of the array processor is changed from the horizontal direction to the vertical direction and the interleaved output stream is generated.