DocumentCode :
687449
Title :
Adaptive Resource Allocation for OFDM-Based Single-Relay Cooperative Communication Systems over Rayleigh Fading Channels
Author :
Chuan-Wang Chang ; Hong-Jin Lai ; Yung-Chen Wu ; Chien-Lung Huang ; Tien-Szu Pan ; Hai-ping Tsui ; Chen-Ping Ho ; Chung-Hsien Chen
Author_Institution :
Dept. of Electr. Eng., Chienkuo Technol. Univ., ChangHua, Taiwan
fYear :
2013
fDate :
10-12 Dec. 2013
Firstpage :
214
Lastpage :
219
Abstract :
In this paper aims on adaptive resource allocation in maximize system throughput under total power and target bit error rate (BER) constraints propose the algorithms of adaptive resource allocation on OFDM-based (Orthogonal Frequency Division Multiplexing) cooperative communication systems. For single-source, destination and relay node environment. the optimal power allocation for the sub carriers of the source node. The proposed used Lagrange multiplier with KKT (Karush-Kuhn-Tucker) conditions to solve the optimal power allocation for the sub carriers of the source node. Due to high computational complexity, a sub optimal algorithm about sub carrier power allocation of the source node was designed to maximize system throughput and reduce computational complexity. In order to reduce the computational complexity and maximize system output volume, followed by good design of our algorithm. The simulation results goal of to maximize the total system throughput by power allocation at the sub carriers of the source node.
Keywords :
OFDM modulation; Rayleigh channels; channel allocation; computational complexity; cooperative communication; error statistics; relay networks (telecommunication); KKT conditions; Karush-Kuhn-Tucker conditions; Lagrange multiplier; OFDM; Rayleigh fading channels; adaptive resource allocation; computational complexity; optimal power allocation; orthogonal frequency division multiplexing; relay node environment; single-relay cooperative communication systems; subcarrier power allocation; suboptimal algorithm; target BER constraints; target bit error rate constraints; Bit error rate; OFDM; Optimization; Relays; Resource management; Signal to noise ratio; Wireless communication; Cooperative Communication; Orthogonal Frequency Division Multiplexing (OFDM); Target Bit Error Rate;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Robot, Vision and Signal Processing (RVSP), 2013 Second International Conference on
Conference_Location :
Kitakyushu
Print_ISBN :
978-1-4799-3183-5
Type :
conf
DOI :
10.1109/RVSP.2013.57
Filename :
6830016
Link To Document :
بازگشت