DocumentCode :
1689306
Title :
Cooperative MAC for Rate Adaptive Randomized Distributed Space-Time Coding
Author :
Liu, Pei ; Liu, Yuanpeng ; Korakis, Thanasis ; Scaglione, Anna ; Erkip, Elza ; Panwar, Shivendra
Author_Institution :
Dept. of Electr. & Comput. Eng., Polytech. Inst. of NYU, Brooklyn, OH
fYear :
2008
Firstpage :
1
Lastpage :
6
Abstract :
In a distributed wireless network, it is possible to employ several relays and mimic a multiple antenna transmission system. In this paper we propose a MAC layer solution that allows multiple relays to send information to the receiver at unison, using a randomized distributed space time code. The randomized space-time coding can recruit relays on the fly, thus significantly reducing signaling overhead. The cross-layer design between physical layer and MAC layer involves relay discovery and rate adaptation, and results in improvements in throughput and delay performance. The design is dynamic and can be adapted to changing network conditions. The proposed MAC scheme can be integrated into various wireless technologies such as distributed contention based networks (e.g., IEEE 802.11 BSS and ad hoc mode) as well as centralized multiple access networks (e.g., IEEE 802.16).
Keywords :
access protocols; adaptive codes; radio networks; space-time codes; MAC layer solution; distributed wireless network; randomized distributed space time code; rate adaptation; rate adaptive randomized distributed coding; relay discovery; wireless technologies; Decoding; Diversity methods; Fading; Media Access Protocol; Physical layer; Recruitment; Relays; Space time codes; Throughput; Wireless networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Global Telecommunications Conference, 2008. IEEE GLOBECOM 2008. IEEE
Conference_Location :
New Orleans, LO
ISSN :
1930-529X
Print_ISBN :
978-1-4244-2324-8
Type :
conf
DOI :
10.1109/GLOCOM.2008.ECP.956
Filename :
4698731
Link To Document :
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