Title :
Improved labelling diversity for iteratively-decoded multi-antenna systems
Author :
Krasicki, Maciej
Author_Institution :
Wireless Commun., Poznan Univ. of Technol., Poznan, Poland
Abstract :
In this work the labelling diversity scheme is developed. The Binary Switching Algorithm is employed to find an optimized 2-dimensional labelling map of 16-QAM constellation, which, applied in conjunction with the best map for iteratively-decoded bit-interleaved space-time coded modulation (BI-STCM-ID), enhances the advantages of multi-antenna transmission. Properties of the proposed scheme are compared with the original BI-STCM-ID by means of Distance Spectrum, Extrinsic Information Transfer (EXIT) Chart and Asymptotic Coding Gain calculation. Afterwards they are verified by the Monte-Carlo simulations.
Keywords :
Monte Carlo methods; antennas; iterative decoding; quadrature amplitude modulation; space-time codes; 16-QAM constellation; Monte-Carlo simulation; asymptotic coding gain calculation; binary switching algorithm; distance spectrum; extrinsic information transfer chart; iteratively-decoded bit-interleaved space-time coded modulation; iteratively-decoded multiantenna system; labelling diversity; multiantenna transmission; optimized 2-dimensional labelling map; Bit-interleaved coded modulation; constellation labelling; optimization; space-time coding;
Conference_Titel :
Wireless Communications and Mobile Computing Conference (IWCMC), 2011 7th International
Conference_Location :
Istanbul
Print_ISBN :
978-1-4244-9539-9
DOI :
10.1109/IWCMC.2011.5982560
