Iterative decoding for the concatenated system of VLC and STTC in presence of channel estimation errors

Authors:
Huijun Chen;Lei Cao
Affiliations:
The University of Mississippi, University, MS;The University of Mississippi, University, MS
Venue:
IWCMC '07 Proceedings of the 2007 international conference on Wireless communications and mobile computing
Year:
2007

Citing 3
Cited 0

On Variable Length Codes for Iterative Source/Channel Decoding

DCC '01 Proceedings of the Data Compression Conference
Unveiling turbo codes: some results on parallel concatenated coding schemes

IEEE Transactions on Information Theory
Space-time codes for high data rate wireless communication: performance criterion and code construction

IEEE Transactions on Information Theory

Quantified Score

Hi-index	0.00

Visualization

Abstract

For wireless communications with limited bandwidth and fading channels, both source coding and MIMO techniqueare generally desired. In this paper, we consider the receiver design for a concatenated system with reversible variable length code (RVLC) and space time trellis code (STTC). The maximum a posteriori probability (MAP) decoding algorithm is adapted for both component decoders considering the facts that information are in both bit and symbol domains; systematic information are inseparable and the trellis structure of RVLC is non-symmetric. Conversion from the extrinsic information to the a priori information is also designed based on the modulation mode and mapping method. As a result, the decoding results of each component decoder can be utilized by the other component decoder iteratively so as to improve the overall decoding performance. The designed receiver is then tested for both quasi-static at and rapid fading channels when channel information is known to the receiver either perfectly or non-perfectly, which has shown significant improvement over the traditional receiver without iterative decoding.