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- Title
Power Allocation for Multi-relay Cooperative Systems Based on Glowworm Swarm Optimization Algorithm.
- Authors
TANG Si-teng; LIU Zi-yan; SHUAI Yang
- Abstract
To fully realize the potentials of relay-assisted transmission and reduce the computational complexity of power allocation for multi - relay cooperative communication systems, a power allocation scheme based on glowworm swarm optimization (GSO) algorithm is proposed. With a total transmiting power and per-node transmitting power constraints, the power allocation optimization model is presented to maximize the average signal-to-noise ratio(SNR). The objective function is selected as fitness function of GSO, status of fireflies is measured by a vector, of which each element represents power of source node and the relay node, respectively. Most fireflies in the GSO gather at the location where the fitness function value is the best, i. e. asymptotically optimal power allocation scheme is obtained. Simulation and numerical results demonstrate that power allocation scheme based on GSO achieves better performance with lower bit error rate up to 2.44% ~6. 17% compared with equal power allocation(EPA).
- Subjects
RADIO relay systems; COMPUTATIONAL complexity; WIRELESS cooperative communication; TELECOMMUNICATION systems; SIGNAL-to-noise ratio; SIGNAL processing
- Publication
Telecommunication Engineering, 2014, Vol 54, Issue 10, p1407
- ISSN
1001-893X
- Publication type
Article
- DOI
10.3969/j.issn.1001-893x.2014.10.017