Artificial fish swarm based power allocation algorithm for MIMO-OFDM relay underwater acoustic communication

被引：27
作者：
Zhou, Guili [1 ]
Li, Youming [1 ]
He, Yu-Cheng [2 ]
Wang, Xiaoli [1 ]
Yu, Mingchen [1 ]
机构：
[1] Ningbo Univ, Coll Informat Sci & Engn, 818 Fenghua Rd, Ningbo, Zhejiang, Peoples R China
[2] Huaqiao Univ, Xiamen Key Lab Mobile Multimedia Commun, 668 Jimei Ave, Xiamen, Peoples R China
来源：
IET COMMUNICATIONS | 2018年 / 12卷 / 09期
基金：
中国国家自然科学基金;
关键词：
optimisation; OFDM modulation; wireless channels; singular value decomposition; intercarrier interference; MIMO communication; underwater acoustic communication; artificial fish swarm based power allocation algorithm; MIMO-OFDM relay underwater acoustic communication; artificial fish swarm algorithm; multiple-input; multiple-output orthogonal frequency-division; underwater acoustic communication systems; singular value decomposition technique; two-hop transmission links; virtual direct links; single-input; power allocation optimisation problem; relay nodes; virtual SISO-OFDM system; problem-solving algorithms; power consumptions; UWA communication systems; SYSTEMS; NETWORKS; CHANNELS; ACCESS;
D O I：
10.1049/iet-com.2017.0149
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This study investigates the application of artificial fish swarm algorithm (AFSA) in the power allocation for multiple-input and multiple-output orthogonal frequency-division multiplexing (MIMO-OFDM) relay underwater acoustic (UWA) communication systems. First, by using the singular value decomposition technique, the two-hop transmission links are converted into the virtual direct links in an single-input and single-output OFDM (SISO-OFDM) system. Then, a power allocation optimisation problem, together with the assignment of subcarriers and relay nodes, are formulated for the virtual SISO-OFDM system. Finally, the problem-solving algorithms are proposed in two parts. Computer simulation results show that the proposed AFSA scheme improves in both power consumptions and diversity gains compared with two existing schemes for UWA communication systems.
引用
收藏
页码：1079 / 1085
页数：7
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