Title :
Throughput performance of incremental decode-and-forward using infra-structured relays and Adaptive Modulation and Coding
Author :
Alves, Hirley ; Brante, Glauber ; Demo Souza, Richard
Author_Institution :
Fed. Univ. of Technol. Parana (UTFPR), Curitiba, Brazil
Abstract :
In this paper we investigate the combination of Adaptive Modulation and Coding (AMC) and Hybrid Automatic Re- peat reQuest (HARQ) techniques in an orthogonal cooperative scheme using infra-structured (fixed) relays. We consider realistic large scale and small scale path loss models, taking into account the antennas heights and the presence or not of line of sight (LOS). Results demonstrate that large gains in throughput can be obtained when the source and the relay are allowed to use different spectral efficiencies. Moreover, we also propose a discretized AMC scheme with only six levels, which achieves a performance close to optimum.
Keywords :
adaptive modulation; automatic repeat request; cooperative communication; decode and forward communication; encoding; AMC scheme; HARQ technique; LOS; adaptive modulation; coding; hybrid automatic repeat request technique; incremental decode-and-forward; infrastructured relay; orthogonal cooperative scheme; path loss models; spectral efficiency; Ad hoc networks; Antennas; Fading; Protocols; Relays; Signal to noise ratio; Throughput;
Conference_Titel :
Electrical and Computer Engineering (CCECE), 2011 24th Canadian Conference on
Conference_Location :
Niagara Falls, ON
Print_ISBN :
978-1-4244-9788-1
Electronic_ISBN :
0840-7789
DOI :
10.1109/CCECE.2011.6030623
