Title :
QoS-guaranteed cross-layer adaptive transmission algorithms for the IEEE 802.16 OFDMA system
Author :
Filin, S.A. ; Moiseev, S.N. ; Kondakov, M.S. ; Garmonov, A.V. ; Do Hyon Yim ; Jaeho Lee
Author_Institution :
JSC Kodofon, Voronezh
Abstract :
In this paper, we analyze the IEEE 802.16 OFDMA system with the frequency diversity frame structure. We perform adaptive coding and modulation, allocation of the time-frequency resource and transmit power to the downlink and uplink service flows, which are scheduled for transmission in the current frame. Also, we consider adaptation of the frame boundary between the downlink and uplink subframes. We minimize the sum time-frequency resource, allocated in both downlink and uplink subframes, under the constraints on the maximum transmit power and the time-frequency resource, available in the frame, while satisfying the QoS requirements for all downlink and uplink service flows, scheduled for transmission. We propose the cross-layer optimization algorithms, which take into account the MAC and PHY layers processing during the optimization
Keywords :
adaptive codes; adaptive modulation; broadband networks; diversity reception; frequency division multiple access; mobile radio; quality of service; radio access networks; radio links; IEEE 802.16 OFDMA system; MAC layers processing; PHY layers processing; QoS; adaptive coding; adaptive modulation; cross-layer optimization algorithms; downlink service flows; frequency diversity frame structure; guaranteed cross-layer adaptive transmission algorithms; mobile broadband wireless access; time-frequency resource; uplink service flows; Adaptive coding; Adaptive control; Downlink; Frequency diversity; Modulation coding; OFDM; Physical layer; Programmable control; Resource management; Time frequency analysis;
Conference_Titel :
Wireless Communications and Networking Conference, 2006. WCNC 2006. IEEE
Conference_Location :
Las Vegas, NV
Print_ISBN :
1-4244-0269-7
Electronic_ISBN :
1525-3511
DOI :
10.1109/WCNC.2006.1683600
