TY - GEN
T1 - Combining adaptive modulation and coding with truncated ARQ enhances throughput
AU - Liu, Qingwen
AU - Zhou, Shengli
AU - Giannakis, Georgios B.
PY - 2004/1/1
Y1 - 2004/1/1
N2 - We develop a cross-layer design which combines adaptive modulation and coding (AMC) at the physical layer with a truncated automatic repeat request (ARQ) protocol at the data link layer, in order to maximize spectral efficiency under prescribed delay and performance constraints. We, derive the achieved spectral efficiency in closed-form for transmissions over Nakagami-m block fading channels. Numerical results reveal that retransmissions at the data link layer alleviate stringent error-control requirements at the physical layer, and thereby enable considerable spectral efficiency gains. Diminishing returns appear on the spectral efficiency improvement as the number of retransmissions increases, which suggests that a small number of retransmissions strikes a desirable delay-throughput tradeoff.
AB - We develop a cross-layer design which combines adaptive modulation and coding (AMC) at the physical layer with a truncated automatic repeat request (ARQ) protocol at the data link layer, in order to maximize spectral efficiency under prescribed delay and performance constraints. We, derive the achieved spectral efficiency in closed-form for transmissions over Nakagami-m block fading channels. Numerical results reveal that retransmissions at the data link layer alleviate stringent error-control requirements at the physical layer, and thereby enable considerable spectral efficiency gains. Diminishing returns appear on the spectral efficiency improvement as the number of retransmissions increases, which suggests that a small number of retransmissions strikes a desirable delay-throughput tradeoff.
UR - http://www.scopus.com/inward/record.url?scp=84944675690&partnerID=8YFLogxK
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U2 - 10.1109/SPAWC.2003.1318932
DO - 10.1109/SPAWC.2003.1318932
M3 - Conference contribution
AN - SCOPUS:84944675690
T3 - IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
SP - 110
EP - 114
BT - 2003 4th IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2003
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 4th IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2003
Y2 - 15 June 2003 through 18 June 2003
ER -