Title :
Evaluation of low complexity concatenated codes for high data rate transmission
Author :
Nefedov, Nikolai
Author_Institution :
Nokia Res. Center, Finland
Abstract :
In this paper we compare low complexity turbo-like codes formed by differential encoders. A unified coding scheme combining turbo codes and parallel concatenated zigzag codes (PCZZ) and its multi-dimensional extension for packet re-transmission schemes in HSDPA/WCDMA is proposed. It is shown that low complexity PCZZ outperforms WCDMA turbo codes at high coding rates. Modified zigzag decoder and suggested simple stopping rule for PCZZ iterative decoding brings further complexity reduction without visible performance loss.
Keywords :
broadband networks; code division multiple access; computational complexity; concatenated codes; data communication; iterative decoding; radio links; turbo codes; code division multiple access; concatenated codes; differential encoders; high data rate transmission; high speed downlink packet access; iterative decoding; packet retransmission schemes; parallel concatenated zigzag codes; turbo codes; unified coding scheme; Additive noise; Concatenated codes; Convolutional codes; Downlink; Inductors; Iterative decoding; Multiaccess communication; Performance loss; Turbo codes; Wireless communication;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2003. PIMRC 2003. 14th IEEE Proceedings on
Print_ISBN :
0-7803-7822-9
DOI :
10.1109/PIMRC.2003.1260440
