Research Article
Achievable Performance Improvements Provided by Cooperative Diversity
@INPROCEEDINGS{10.1109/WIOPT.2006.1666462, author={Stephan Bohacek}, title={Achievable Performance Improvements Provided by Cooperative Diversity}, proceedings={4th International ICST Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks}, publisher={IEEE}, proceedings_a={WIOPT}, year={2006}, month={8}, keywords={}, doi={10.1109/WIOPT.2006.1666462} }
- Stephan Bohacek
Year: 2006
Achievable Performance Improvements Provided by Cooperative Diversity
WIOPT
IEEE
DOI: 10.1109/WIOPT.2006.1666462
Abstract
This paper examines the achievable performance gains when a particular class of cooperative relaying known as best-select is employed. In essence, best-select seeks to improve performance by exploiting diversity. We closely examine a particular topology when the number of nodes is finite as well when the node density goes to infinity. Determining the performance is complicated by the correlation of the channel gains between nearby channels (i.e., when the receivers are nearby and the transmitters are nearby). This challenge is overcome by modeling the channels as spatially continuous diffusion processes and as a random field and then using a Poisson clumping heuristic. In the example network and metric studied, it is found that in the limit, node cooperation can provide an increase in the end-to-end performance by 35 dB (i.e., a factor of ∼3000) in a 5-hop network. This result motivates further work in the design of multihop cooperative protocols.