Apparatus and method for transporting/receiving data in a CDMA mobile communication system

摘要

A data transportation/reception apparatus and method in a mobile communication system. The data transportation apparatus and method divides transport data bits into bits having higher priority and bits having lower priority, maps the bits having higher priority to bit positions having higher reliability, and maps the bits having lower priority to bit positions having lower reliability. The data reception apparatus and method demodulates received modulated symbols, divides the demodulated coded bits into two coded bit groups according to priority, deinterleaving the coded bit groups using different deinterleavers, and decodes the deinterleaved coded bits.

主权项

1. A method for transmitting data in a mobile communication system, comprising the steps of:
encoding a data bit stream by an encoder; determining k for each of the bits included in the encoded data bit steam, where k=m mod 4, and m is an index of each of the bits configured in the encoded data bit stream; inputting bits corresponding to k=0 or 1 from the encoded data bit stream to a first interleave unit; inputting bits corresponding to k=2 or 3 from the encoded data bit stream to a second interleave unit; interleaving the bits corresponding to k=0 or 1 by the first interleave unit to output an n-th bit and an n+1-th bit as a result of the interleaving by the first interleave unit; interleaving the bits corresponding to k=2 or 3 by the second interleave unit to output an n+2-th bit and an n+3-th bit, in order, as a result of the interleaving by the second interleave unit; and generating a modulation symbol with the n-th bit and the n+1-th bit obtained from the first interleave unit, and with the n+2-th bit and the n+3-th bit obtained from the second interleave unit, using a high-order modulation scheme.