Changes between Version 3 and Version 4 of HunterMSThesis


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Timestamp:
Jan 31, 2009, 8:57:26 PM (15 years ago)
Author:
murphpo
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  • HunterMSThesis

    v3 v4  
    88User-cooperation has been studied extensively in the literature. This  mechanism achieves many of the same gains that can be had by using  multi-antenna (MIMO) communications in applications where the size of  a node is limited. Existing analysis assumes that the system is scheduled;  both the relay knows to listen when a packet is being sent. We present  analysis of a class of random-access cooperative systems and show that  the same performance as the scheduled systems can be achieved as long as  certain requirements are met in the packet detection scheme of the relay.  In particular, we find that a static decision threshold on energy detection  results in a cooperative network that performs asymptotically no better  than a simple point-to-point network with no relay at all. However, a  decision threshold that dynamically shifts with average SNR allows the  system to achieve full spatial diversity.
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     10== Paper ==
     11[attachment:wiki:HunterMSThesis/Files:HunterThesis.pdf Random Access Cooperative Systems] (13MB PDF)
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