TY - GEN
T1 - Cross-layer optimization for downlink wavelet image transmission
AU - Lee, Hyungkeuk
AU - Jeon, Sungho
AU - Lee, Sanghoon
PY - 2006
Y1 - 2006
N2 - Cross-layer optimization for efficient multimedia communications has been an emerging issue, in terms of providing better QoS (Quality of Service) over a capacity-limited wireless channel. This paper presents a cross-layer optimization approach between multimedia and wireless network layers for downlink image transmission by means of a quality criterion termed "visual entropy" using Lagrangian relaxation. By utilizing the natural layered structure of wavelet coding, an optimal level of power allocation is determined, to permit the throughput of visual entropy for downlink broadband wireless systems to be maximized over a multi-cell environment. In the simulation, the throughput gain of visual entropy is dramatically increased up at the cell boundary, with respect to the case of no considerations.
AB - Cross-layer optimization for efficient multimedia communications has been an emerging issue, in terms of providing better QoS (Quality of Service) over a capacity-limited wireless channel. This paper presents a cross-layer optimization approach between multimedia and wireless network layers for downlink image transmission by means of a quality criterion termed "visual entropy" using Lagrangian relaxation. By utilizing the natural layered structure of wavelet coding, an optimal level of power allocation is determined, to permit the throughput of visual entropy for downlink broadband wireless systems to be maximized over a multi-cell environment. In the simulation, the throughput gain of visual entropy is dramatically increased up at the cell boundary, with respect to the case of no considerations.
UR - http://www.scopus.com/inward/record.url?scp=50949093519&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=50949093519&partnerID=8YFLogxK
U2 - 10.1109/GLOCOM.2006.225
DO - 10.1109/GLOCOM.2006.225
M3 - Conference contribution
AN - SCOPUS:50949093519
SN - 142440357X
SN - 9781424403578
T3 - GLOBECOM - IEEE Global Telecommunications Conference
BT - IEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference
T2 - IEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference
Y2 - 27 November 2006 through 1 December 2006
ER -