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Decision combining in relay networks
- Source :
- 2008 International Conference on Electrical and Computer Engineering.
- Publication Year :
- 2008
- Publisher :
- IEEE, 2008.
-
Abstract
- We consider non-coherent detection of M-ary FSK modulated signals transmitted over a slow, Rayleigh fading channel in a wireless relay network. The network consists of a single source-destination pair and a number of relays (L), which employ cooperative diversity. Performances of a counting rule and square law combiner are studied. We derive closed form expressions for probabilities of error for equal relay channel average SNR. For unequal relay channel SNRs, we resort to Monte Carlo simulations to estimate the error probabilities. We examine different combinations of M and L for a range of average SNR values. Although the square law combiner outperforms the counting rule for equal and small average SNRs, the loss in performance is not high. Simplicity of counting rule may be advantageous in these cases.
- Subjects :
- Engineering
Frequency-shift keying
business.industry
Monte Carlo method
Data_CODINGANDINFORMATIONTHEORY
Square (algebra)
law.invention
Cooperative diversity
Relay
law
Computer Science::Networking and Internet Architecture
Electronic engineering
business
Algorithm
Relay channel
Computer Science::Information Theory
Rayleigh fading
Communication channel
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- 2008 International Conference on Electrical and Computer Engineering
- Accession number :
- edsair.doi...........f190bf5e713768556c58072ca88cb6ca