TY - GEN
T1 - Optimal control of transmission errors with power allocation and stability in ARQ downlink
AU - Giovanidis, Anastasios
AU - Wunder, Gerhard
AU - Boche, Holger
AU - Stefanov, Stoycho
PY - 2008
Y1 - 2008
N2 - In the current work a downlink scenario is studied where packets for each user are buffered at the base station waiting for service. The service rates are considered constant and determined by QoS requirements. Errors due to outages occur and are reported to the base station via a reliable binary feedback link. Erroneous packets are held in the queues and an Automatic Retransmission Request protocol that can be power-controlled repeats transmission until success. Having a total power budget Ptot available per slot to divide among users, the question which is the stability region of such a system is investigated and a power allocation that stabilizes the queues for all vectors within the aforementioned region is introduced. The optimal power allocation is the solution of a nonconcave maximization problem, the properties of which are analyzed. Algorithms based on the Lagrange dual problem are proposed that provide the actual or a relatively good approximation of the solution.
AB - In the current work a downlink scenario is studied where packets for each user are buffered at the base station waiting for service. The service rates are considered constant and determined by QoS requirements. Errors due to outages occur and are reported to the base station via a reliable binary feedback link. Erroneous packets are held in the queues and an Automatic Retransmission Request protocol that can be power-controlled repeats transmission until success. Having a total power budget Ptot available per slot to divide among users, the question which is the stability region of such a system is investigated and a power allocation that stabilizes the queues for all vectors within the aforementioned region is introduced. The optimal power allocation is the solution of a nonconcave maximization problem, the properties of which are analyzed. Algorithms based on the Lagrange dual problem are proposed that provide the actual or a relatively good approximation of the solution.
UR - http://www.scopus.com/inward/record.url?scp=51849125205&partnerID=8YFLogxK
U2 - 10.1109/CISS.2008.4558561
DO - 10.1109/CISS.2008.4558561
M3 - Conference contribution
AN - SCOPUS:51849125205
SN - 9781424422470
T3 - CISS 2008, The 42nd Annual Conference on Information Sciences and Systems
SP - 407
EP - 412
BT - CISS 2008, The 42nd Annual Conference on Information Sciences and Systems
T2 - CISS 2008, 42nd Annual Conference on Information Sciences and Systems
Y2 - 19 March 2008 through 21 March 2008
ER -