Adaptive Turbo-Coded Hybrid-ARQ in OFDM Systems over Gaussian and Fading Channels
Abstract
In this paper, an analytical approach for spectral efficiency maximization of coded wideband transmissions is presented based on OFDM. The approach exploits Type-III Hybrid-ARQ, enabling all sub-carriers to be employed in codeword transmission regardless of the sub-carrier conditions. The effects of imperfect sub-channel estimation are characterized and compensated for during code rate and signal constellation optimization. The results of the paper highlight that by independently adapting the code rate and signal constellation to individual OFDM sub-carriers based on an estimated sub-carrier CSI, the overall spectral efficiency of the system is maximized.
Keywords
Hybrid-ARQ, AMC, adaptive, fading, diversity combining and turbo codes
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
K. Oteng-Amoako and S. Nooshabadi, "Adaptive Turbo-Coded Hybrid-ARQ in OFDM Systems over Gaussian and Fading Channels," in Journal of Communications Software and Systems, vol. 2, no. 1, pp. 3-11, April 2017, doi: 10.24138/jcomss.v2i1.300
@article{oteng-amoako2006adaptiveturbo,
author = {Kingsley Oteng-Amoako and Saeid Nooshabadi},
title = {Adaptive Turbo-Coded Hybrid-ARQ in OFDM Systems over Gaussian and Fading Channels},
journal = {Journal of Communications Software and Systems},
month = {4},
year = {2006},
volume = {2},
number = {1},
pages = {3--11},
doi = {10.24138/jcomss.v2i1.300},
url = {https://doi.org/10.24138/jcomss.v2i1.300}
}