Title :
Performance of bandwidth efficient multilevel HARQ schemes over wireless channels
Author :
Luo, Qinglin ; Sweeney, Peter
Author_Institution :
Surrey Univ., Guildford, UK
Abstract :
We propose several bandwidth efficient HARQ schemes based on multilevel coded modulation in this paper. These schemes combine the bandwidth efficiency of coded modulation with power efficiency of forward error control to provide a high efficient transmission. Simulations are carried out over the wireless channels. Both throughput and reliability are found to be improved by employing the HARQ schemes based on the multilevel coded modulation instead of the conventional trellis coded modulation. Simulation and performance analysis on code combining in multilevel HARQ is also presented. Code combining in the different multilevel HARQ schemes is found to influence the multistage decoding differently. Suggestion on scheme choosing for various requirements is presented at the end.
Keywords :
automatic repeat request; radio networks; telecommunication channels; telecommunication network reliability; trellis coded modulation; bandwidth efficient multilevel HARQ scheme; code combining; forward error control; multilevel coded modulation; multistage decoding; reliability; trellis coded modulation; wireless channel; Analytical models; Automatic repeat request; Bandwidth; Code standards; Decoding; Error correction codes; Forward error correction; Modulation coding; Performance analysis; Throughput;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2004. PIMRC 2004. 15th IEEE International Symposium on
Print_ISBN :
0-7803-8523-3
DOI :
10.1109/PIMRC.2004.1368789
