TY - GEN
T1 - On design of TDD for joint uplink and downlink resource allocation in OFDMA-based WiMax
AU - Chahed, Tijani
AU - Elayoubi, Salah Eddine
AU - Altman, Eitan
PY - 2008/1/1
Y1 - 2008/1/1
N2 - In this paper, we study the joint design of uplink and downlink resources in OFDMA-based systems. We first analyze the interactions between uplink and downlink, due essentially to the usage of Time Division Duplexing (TDD) and the TCP ACKs. This analysis is based on analytical models for interference and throughputs that we develop for both directions. We next study the capacity of the system using a Markovian analysis and matrix geometric solutions. Our performance analysis study allows us to determine the optimal proportion of resources that has to be allocated to the uplink so as to minimize blocking. In addition to that, we show that an admission control policy reserving some uplink resources to TCP ACKs may improve the overall capacity of the system.
AB - In this paper, we study the joint design of uplink and downlink resources in OFDMA-based systems. We first analyze the interactions between uplink and downlink, due essentially to the usage of Time Division Duplexing (TDD) and the TCP ACKs. This analysis is based on analytical models for interference and throughputs that we develop for both directions. We next study the capacity of the system using a Markovian analysis and matrix geometric solutions. Our performance analysis study allows us to determine the optimal proportion of resources that has to be allocated to the uplink so as to minimize blocking. In addition to that, we show that an admission control policy reserving some uplink resources to TCP ACKs may improve the overall capacity of the system.
U2 - 10.1109/VETECF.2008.305
DO - 10.1109/VETECF.2008.305
M3 - Conference contribution
AN - SCOPUS:58149136009
SN - 9781424417223
T3 - IEEE Vehicular Technology Conference
BT - The 68th IEEE Vehicular Technology Conference, VTC 2008-Fall
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 68th IEEE Vehicular Technology Conference, VTC 2008-Fall
Y2 - 21 September 2008 through 24 September 2008
ER -