Title :
Interleaver pruning for construction of variable-length turbo codes
Author :
Daneshgaran, Fred ; Mulassano, Paolo
Author_Institution :
Electr. & Comput. Eng. Dept., California State Univ., Los Angeles, CA, USA
fDate :
3/1/2004 12:00:00 AM
Abstract :
In this paper, we address the issue of pruning (i.e., shortening) a given interleaver in a parallel concatenated convolutional code (PCCC). The principle goal of pruning is that of construction of variable-length and hence delay interleavers with application to PCCC, using the same structure (possibly in hardware) of the interleaver and deinterleaver units. As a side benefit, it is sometimes possible to reduce the interleaver length and hence delay for nearly the same and sometimes even better asymptotic performance. In particular, we present a systematic technique for interleaver pruning and demonstrate the average optimality of the strategy. Sample simulation results are presented confirming the average optimality of the proposed scheme.
Keywords :
concatenated codes; convolutional codes; interleaved codes; turbo codes; variable length codes; UMTS; interleaver pruning; parallel concatenated convolutional codes; variable length turbo codes; 3G mobile communication; Block codes; Concatenated codes; Convolution; Convolutional codes; Delay; Hardware; Joining processes; Quality of service; Turbo codes;
Journal_Title :
Information Theory, IEEE Transactions on
DOI :
10.1109/TIT.2004.824914