Title :
SR ARQ for adaptive modulation systems combined with selection transmit diversity
Author :
Femenias, Guillem
Author_Institution :
Dept. of Math. & Informatics, Univ. of the Balearic Islands, Palma de Mallorca, Spain
fDate :
6/1/2005 12:00:00 AM
Abstract :
Adaptive automatic repeat request (ARQ) schemes are quite effective for throughput enhancement in time-varying mobile channel environments. In this paper, both throughput and packet error rate are analyzed for a selective-repeat ARQ scheme based on a constant-power variable-rate adaptive M-QAM system combined with selection transmit diversity over multiple-input multiple-output Markovian-Nakagami channels. In this analysis, the impact of using outdated and/or imperfect channel state information on the performance of the system is considered.
Keywords :
MIMO systems; Markov processes; adaptive modulation; automatic repeat request; diversity reception; error statistics; mobile radio; quadrature amplitude modulation; time-varying channels; BER; M-QAM system; Markovian-Nakagami channel; SR ARQ; adaptive automatic repeat request; adaptive modulation system; channel state information; multiple-input multiple-output; packet error rate; selection transmit diversity; space diversity; time-varying mobile channel; Adaptive systems; Automatic repeat request; Diversity reception; Error analysis; Fading; MIMO; Radio transmitters; Receiving antennas; Strontium; Throughput; Adaptive modulation; Markovian–Nakagami channel; automatic repeat request (ARQ); multiple-input multiple-output (MIMO); selection transmit diversity (STD); space diversity;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2005.849796
