TY - GEN
T1 - A decentralized cross-layer approach to cooperative video transmission
AU - Mastronarde, Nicholas
AU - Verde, Francesco
AU - Darsena, Donatella
AU - Scaglione, Anna
AU - Van Der Schaar, Mihaela
PY - 2011/12/1
Y1 - 2011/12/1
N2 - We investigate the impact of cooperative relaying on uplink multi-user (MU) wireless video transmission. We formulate the problem as an MU Markov decision process (MDP) that explicitly considers the cooperation at the physical layer and the medium access control sublayer, the video users' heterogeneous traffic characteristics, and the dynamically varying network conditions. Although MDPs notoriously suffer from the curse of dimensionality, our study shows that the complexity of the MU-MDP can be mitigated. Our simulation results show that cooperation allows users with feeble direct signals to achieve improvements in video quality on the order of 5-10 dB peak signal-to-noise ratio, with less than 0.8 dB quality loss by users with strong direct signals.
AB - We investigate the impact of cooperative relaying on uplink multi-user (MU) wireless video transmission. We formulate the problem as an MU Markov decision process (MDP) that explicitly considers the cooperation at the physical layer and the medium access control sublayer, the video users' heterogeneous traffic characteristics, and the dynamically varying network conditions. Although MDPs notoriously suffer from the curse of dimensionality, our study shows that the complexity of the MU-MDP can be mitigated. Our simulation results show that cooperation allows users with feeble direct signals to achieve improvements in video quality on the order of 5-10 dB peak signal-to-noise ratio, with less than 0.8 dB quality loss by users with strong direct signals.
UR - http://www.scopus.com/inward/record.url?scp=84857216034&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84857216034&partnerID=8YFLogxK
U2 - 10.1109/GLOCOM.2011.6134310
DO - 10.1109/GLOCOM.2011.6134310
M3 - Conference contribution
AN - SCOPUS:84857216034
SN - 9781424492688
T3 - GLOBECOM - IEEE Global Telecommunications Conference
BT - 2011 IEEE Global Telecommunications Conference, GLOBECOM 2011
T2 - 54th Annual IEEE Global Telecommunications Conference: "Energizing Global Communications", GLOBECOM 2011
Y2 - 5 December 2011 through 9 December 2011
ER -