TY - GEN
T1 - Rateless code based opportunistic multicasting over cognitive radio networks
AU - Polacek, Pavol
AU - Huang, Chih Wei
PY - 2012
Y1 - 2012
N2 - Cognitive radio (CR) represents an exciting new paradigm on spectrum utilization and potentially more bandwidth for exploding multimedia traffic. We focus on the layer encoded video multicast problem over CR and contribute 1) an opportunistic multicasting framework, based on rateless forward error correction (FEC) codes, 2) a mechanism for adaptation of data fragment size to improve transmission efficiency, 3) a joint secondary channel (SC) and video data selection algorithm. By adapting fragment size, tracking video group receiving rate, and adapting transmission parameters, we are able to realize the opportunistic multicasting advantage in a challenging CR environment. The proposed overall SC and video data selection algorithm finds the best rateless FEC code length, physical layer modulation and coding schemes (MCS), fragment size and SC combination to increase the effective throughput and heuristically reach maximum system utility. Favorable results comparing to other algorithms showcase the improved performance.
AB - Cognitive radio (CR) represents an exciting new paradigm on spectrum utilization and potentially more bandwidth for exploding multimedia traffic. We focus on the layer encoded video multicast problem over CR and contribute 1) an opportunistic multicasting framework, based on rateless forward error correction (FEC) codes, 2) a mechanism for adaptation of data fragment size to improve transmission efficiency, 3) a joint secondary channel (SC) and video data selection algorithm. By adapting fragment size, tracking video group receiving rate, and adapting transmission parameters, we are able to realize the opportunistic multicasting advantage in a challenging CR environment. The proposed overall SC and video data selection algorithm finds the best rateless FEC code length, physical layer modulation and coding schemes (MCS), fragment size and SC combination to increase the effective throughput and heuristically reach maximum system utility. Favorable results comparing to other algorithms showcase the improved performance.
UR - http://www.scopus.com/inward/record.url?scp=84877646214&partnerID=8YFLogxK
U2 - 10.1109/GLOCOM.2012.6503258
DO - 10.1109/GLOCOM.2012.6503258
M3 - 會議論文篇章
AN - SCOPUS:84877646214
SN - 9781467309219
T3 - GLOBECOM - IEEE Global Telecommunications Conference
SP - 1090
EP - 1096
BT - 2012 IEEE Global Communications Conference, GLOBECOM 2012
T2 - 2012 IEEE Global Communications Conference, GLOBECOM 2012
Y2 - 3 December 2012 through 7 December 2012
ER -