A cooperative phase steering scheme in multi-relay node environments

We propose a decode-and-forward (DF) based cooperative phase steering scheme and analyze its outage probability. The cooperative phase steering scheme is to make the received signals from multiple relay nodes co-phased at a destination node by pre-adjusting the phase differences.With a reasonable am...

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Bibliographic Details
Published in:IEEE transactions on wireless communications 2009-01, Vol.8 (1), p.72-77
Main Authors: Ban, Tae Won, Choi, Wan, Jung, Bang Chul, Sung, Dan Keun
Format: Article
Language:English
Subjects:
Access methods and protocols, osi model
Analytical models
Applied sciences
Communication networks
Cooperative diversity
Decoding
Diversity methods
Diversity reception
Exact sciences and technology
Feedback
Incoherence
Mathematical analysis
Optimization
outage probability
phase steering
Phased arrays
Relay
Relays
Robustness
Simulation
Steering
Telecommunications
Telecommunications and information theory
Teleprocessing networks. Isdn
Wireless communication
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Description
Summary:We propose a decode-and-forward (DF) based cooperative phase steering scheme and analyze its outage probability. The cooperative phase steering scheme is to make the received signals from multiple relay nodes co-phased at a destination node by pre-adjusting the phase differences.With a reasonable amount of feedback information from a destination node, the cooperative phase steering scheme circumvents the drawbacks of conventional cooperative diversity techniques such as maximal ratio combining (MRC) reception, maximal ratio transmission (MRT), and opportunistic relay selection schemes. Our analytical and simulation results show that the cooperative phase steering scheme outperforms the opportunistic relay selection scheme and approaches the MRT scheme known as a theoretically optimal cooperative diversity technique. It is also shown that cooperative phase steering has sufficient robustness to phase incoherence.
ISSN:1536-1276
1558-2248
DOI:10.1109/T-WC.2009.080038