DocumentCode :
1956682
Title :
Joint source coding diversity and cooperative diversity for multimedia communications
Author :
Kwasinski, Andres ; Han, Zhu ; Liu, K. J Ray
Author_Institution :
Dept. of Electr. & Comput. Eng., Maryland Univ., College Park, MD, USA
fYear :
2005
fDate :
5-8 June 2005
Firstpage :
111
Lastpage :
115
Abstract :
Source coding diversity produces multiple independent source descriptions so as to improve the received quality. Cooperative diversity exploits the broadcast nature of wireless networks by allowing multiple users to relay information for each other, so as to create multiple signal paths. This paper studies what is the best strategy in combining these two types of diversity for real-time multimedia communications by comparing the distortion-rate performance of different joint diversity schemes. Results show that exploring both types of diversity improves the system performance most, but in most of cases, only one type of diversity can achieve most of the diversity gain. The best performance is obtained when the mobile can switch between cooperative and non-cooperative operation depending on the channel conditions. Thus, we remark that it is important to design efficient protocols that manage this switch and provides motivation for all users to cooperate.
Keywords :
combined source-channel coding; diversity reception; fading channels; mobile radio; multimedia communication; protocols; cooperative diversity; distortion-rate performance; efficient protocol; fading channel; joint source coding diversity; mobile terminal; multiple independent source description; multiple signal path; real-time multimedia communication; wireless network; Communication switching; Diversity methods; Diversity reception; Mobile communication; Multimedia communication; Relays; Source coding; Switches; System performance; Wireless networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signal Processing Advances in Wireless Communications, 2005 IEEE 6th Workshop on
Print_ISBN :
0-7803-8867-4
Type :
conf
DOI :
10.1109/SPAWC.2005.1505882
Filename :
1505882
Link To Document :
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