高移动环境下利用无线信号空域特征实现OFDM系统的ICI消除

doi:10.11959/j.issn.1000-436x.2015202

Abstract

Abstract:

High-mobility orthogonal frequency division multiplexing(OFDM)systems suffered severe inter-carrier interference(ICI)from Doppler spreading.On the basis of the characteristics of wireless propagation in practical scenarios,a method which employed the WINNER Ⅱ channel model to represent the practical wireless channel and an antenna array as the receiver to eliminate ICI in space-domain was proposed.The direction of arrival estimation algorithm and the beamforming network were used to separate the received signals in space-domain.Multi-beam diversity gain was obtained finally by means of combining the signals which have been compensated for Doppler frequency shifts(DFS)respectively.Simulation results demonstrate that the proposed method not only effectively reduces ICI and the error floors,but also obtains a 5～7 dB signal-to-interference gain over systems without use of the proposed method.

Key words: ICI cancellation, OFDM system, high mobility, array signal processing

Wei WANG,Qin-ye YIN,Peng-cheng MU. Inter-carrier interference cancellation using spatial characteristics for high-mobility OFDM communication systems[J]. Journal on Communications, 2015, 36(8): 76-82.

Figures/Tables 7

References 13

[1]	MA J , ORLIK P , ZHANG J Y , LI Y . Statistics-based ICI mitigation in OFDM over high-mobility channels with line-of-sight components[J]. IEEE Trans on Wireless Communications, 2011,10(11): 3577-3582.
[2]	CHEN S P , YAO T R . Intercarrier interference suppression and channel estimation for OFDM systems in time-varying frequency-selective fading channels[J]. IEEE Trans on Consumer Electronics, 2004,50(2): 429-435.
[3]	RUAN L , ZHANG J H , ZHANG Y Y ,et al. Channel estimation and ICI cancellation for OFDM in doubly-selective channels[A]. The IEEE 68th Vehicular Technology Conference VTC 2008- Fall[C]. 2008. 1-5.
[4]	HIRONORI O , HIROSHI Y . Rotating a circular array antenna to improve performance of OFDM receivers[A]. Proceeding of IEEE ICSPCS[C]. 2011. 1-4.
[5]	DAISUKE M , KENJI K , HIROSHI Y . Frequency offset compensation for OFDM receiver using rotating concyclic antenna[A]. Proceeding of IEEE ISCAS[C]. 2008. 2478-2481.
[6]	WINNER WP1.IST-4-027756 WINNER Ⅱ Channel Models[S]. Helsinki:Wireless World Initiative, 2007.
[7]	熊磊, 钟章队, 艾渤 . 高速铁路移动通信系统WINNER信道性能分析[J]. 铁道学报, 2012,34(3): 44-49. XIONG L , ZHONG Z D , AI B . Analysis on performance of WINNER channels of mobile communication system of high-speed railway[J]. Journal of the China Railway Society, 2012,34(3): 44-49.
[8]	GOLDSMITH A . Wireless Communication[M]. Cambridge University Press, 2004.
[9]	WANG H M . On Time-Frequency Synchronization for Next Generation Wireless Communication Systems[D]. Xi’an:Xi’an Jiaotong University, 2010.
[10]	鄢社峰, 马远良 . 传感器阵列波束优化设计及应用[M]. 北京: 科学出版社, 2009. YAN S F , MA Y L . Sensor Array Beampattern Optimization:Theory with Application[M]. Beijing: Science Press, 2009.
[11]	EDFORDS O , SANDEL M ,et al. Analysis of DFT-based channel estimators for OFDM[J]. Wireless Personal Communications, 2000,12(1): 55-70.
[12]	JIA L , CAO D , HOU C . Two novel transform domain estimation methods for OFDM system and their application environment[A]. IEEE CCECE[C]. 2004. 337-380.
[13]	ABOUTORAB N , HARDUAWANA W , VUCEITIC B . Channel estimation and ICI cancellation for high mobility pilot-aided MIMO-OFDM systems[A]. IEEE WCNC[C]. 2013. 3110-3115.

Metrics

Recommended 0

No Suggested Reading articles found!

Inter-carrier interference cancellation using spatial characteristics for high-mobility OFDM communication systems

RichHTML

PDF

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 7

References 13

Related Articles 9

Metrics

Recommended 0

[1]	Feng ZHOU, Baosheng ZHANG, Wenbo ZHANG. Space-time division cluster DoA estimation algorithm based on UWA spread spectrum signal [J]. Journal on Communications, 2022, 43(8): 100-108.
[2]	Wei WANG,Ming ZHANG,Bobin YAO,Qinye YIN,Pengcheng MU. Computationally efficient direction-of-arrival estimation of non-circular signal based on subspace rotation technique [J]. Journal on Communications, 2020, 41(11): 198-205.
[3]	Wang-han LYU,Hua-li WANG,Shan-xiang MU,Feng LIU. Joint frequency and DOA estimation using spatial-temporal co-prime sampling with off-grid sources [J]. Journal on Communications, 2017, 38(2): 125-131.
[4]	Shu-yan NI,Nai-ping CHENG,Zheng-zhong NI. Recursive algorithm based on QR decomposition for fixed sample size [J]. Journal on Communications, 2010, 31(8A): 195-200.
[5]	Nai-ping CHENG,Shu-yan NI. Modified eigenspace-based beamforming algorithm [J]. Journal on Communications, 2010, 31(8A): 32-36.
[6]	Liang-rui TANG,Qi ZUO,Wei-xin CUI. Synchronization scheme using four-dimensional chaotic system for OFDM [J]. Journal on Communications, 2010, 31(1): 73-79.
[7]	Xiao-ying SUN,Jian CHEN,Lin LIN. Joint signal carrier frequency and 2D DOA estimation method based on space-time processing [J]. Journal on Communications, 2009, 30(8): 39-44.
[8]	Jian LIU,Yan-wei WANG,Zhi-tao HUANG,Yi-yu ZHOU. Conjugate propagator method for direction finding [J]. Journal on Communications, 2008, 29(5): 13-18.
[9]	Jian-feng GU,Ping WEI. Joint frequency-angle estimation using a pseudocovariance matrix [J]. Journal on Communications, 2007, 28(8): 40-45.