Power allocation for OFDM System in a High-Speed Train Environment

被引：0
|
作者：
Sheng, Zhichao [1 ,2 ]
Tuan, H. D. [2 ]
Fang, Yong [1 ]
机构：
[1] Shanghai Univ, Sch Commun & Informat Engn, Shanghai, Peoples R China
[2] Univ Technol Sydney, Fac Engn & Informat Technol, Sydney, NSW 2007, Australia
来源：
2015 IEEE 26TH ANNUAL INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR, AND MOBILE RADIO COMMUNICATIONS (PIMRC) | 2015年
关键词：
power allocation; channel estimation; OFDM; high-speed train; basis expansion model (BEM); CHANNEL ESTIMATION; CANCELLATION;
D O I：
暂无
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 paper considers power allocation between data and pilot symbols for an orthogonal frequency division multiplexing (OFDM) system in a high-speed train (HST) environment. The channel gains are very quickly time-varying within an OFDM symbol so both their estimation and symbol detection must be simultaneously implemented with unavoidable inter-carrier interferences. The average channel complex gains are estimated and are used to calculate the basis expansion model (BEM) coefficients of the HST channel in data detection. We choose the effective signal-to-interference and noise ratio (SINR) in symbol detection as the cost function and propose the effective algorithm to maximize it. The simulation results confirm the viability of our proposed algorithm.
引用
收藏
页码：650 / 655
页数：6
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