| 摘要 |
PURPOSE: An apparatus and a method for turbo interleaving of a CDMA mobile communication system using a turbo code are provided to reduce a hardware process delay by improving a structure of a turbo interleaving apparatus. CONSTITUTION: An intra-row permutation portion(300) is formed with a buffer(301) for updating a row address value, a base sequence portion(303) for exchanging a row address within a row, a reduced q generation portion(305) for outputting a reduction q valve, an adder(307) for adding the reduced q value to the row address of the buffer(301), a comparator(309) for comparing an output value A of the adder(307) with a value of B of p-1, a multiplexer(313) for selecting one of 0 and the value of p-1, and a subtracter(311) for subtracting an output value of the multiplexer(313) from the value of A. An inter-row permutation portion(320) is formed with a multiplexer(321) for outputting one of a base sequence value, 0,1, and the value of p, an adder(323) for adding output values of the multiplexers(321), and a multiplied_PIP generation portion(325) for outputting selectively multiplied_PIP values. A pruning portion(330) is used for comparing a size of interleaver index with a size of interleaver and outputting a smaller value.
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