DocumentCode :
428088
Title :
Multi-resolution signaling for multimedia multicasting
Author :
Liu, Jia ; Annamalai, Annamalai
Author_Institution :
Mobile & Portable Radio Res. Group, Virginia Polytech. Inst. & State Univ., USA
Volume :
2
fYear :
2004
fDate :
26-29 Sept. 2004
Firstpage :
1088
Abstract :
This article develops two selective repeat automatic repeat request (SR-ARQ) schemes, which exploit the difference in bit protection levels of M-PSK symbols with Gray code mapping to improve the throughput performance of multimedia multicasting in fading channels. The throughput enhancement is achieved by optimizing the phase offset ratio of nonuniform constellations matched to the difference in QoS requirements for multimedia traffic and link qualities among nodes in a multicast group. The preliminary results of our research are encouraging and provide motivation for further research on leveraging the benefits of nonuniform constellations on higher layers of the protocol stack. i.e., to facilitate efficient multimedia multicasting in wireless networks.
Keywords :
Gray codes; access protocols; automatic repeat request; fading channels; multicast protocols; multimedia communication; optimisation; packet radio networks; phase shift keying; quality of service; telecommunication signalling; telecommunication traffic; Gray code mapping; M-PSK symbols; QoS requirements; SR-ARQ; bit protection levels; fading channels; link qualities; multi-resolution signaling; multimedia multicasting; multimedia traffic; nonuniform constellations; phase offset ratio optimization; protocol stack; selective repeat automatic repeat request; throughput enhancement; throughput performance; wireless networks; Automatic repeat request; Digital multimedia broadcasting; Fading; Multiaccess communication; Multicast protocols; Multimedia communication; Multiresolution analysis; Protection; Telecommunication traffic; Throughput;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th
ISSN :
1090-3038
Print_ISBN :
0-7803-8521-7
Type :
conf
DOI :
10.1109/VETECF.2004.1400189
Filename :
1400189
Link To Document :
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