Constructed Data Pilot-Assisted Channel Estimators for Mobile Environments
Zhao, Zijun1,2; Cheng, Xiang1,2; Wen, Miaowen3; Yang, Liuqing4; Jiao, Bingli1
2015-04-01
发表期刊IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS
卷号16期号:2页码:947-957
文章类型Article
摘要Nowadays, more and more communication systems are deployed under mobile environments with very high velocity. This paper focuses on the channel estimation problem in vehicular scenarios, which is very challenging in view of the extremely time-varying characteristics of mobile channels. Specifically, we propose a novel channel estimator named constructed data pilot (CDP) estimator for the current communication standards by fully exploiting the channel correlation characteristics across two concatenated symbols. On the basis of the CDP estimator, we further resort to two efficient techniques to improve its performance over the entire signal-to-noise-ratio (SNR) region. For the first technique, the time-variant mobile channel is modeled as a first-order Markov process so that the exact autocorrelation value of the two adjacent symbols can be derived. For the second technique, the SNR is estimated and serves as a priori information. Simulation results reveal that our proposed channel estimators outperform existing alternatives with lower computational complexity.
关键词Channel Estimation Constructed Data Pilot (Cdp) Mobile Environments Orthogonal Frequency-division Multiplexing (Ofdm) Time-variant Channel
WOS标题词Science & Technology ; Technology
关键词[WOS]PROLATE SPHEROIDAL SEQUENCES ; FADING CHANNELS ; OFDM SYSTEMS ; SIMULATION ; MODELS ; COMMUNICATION ; VELOCITIES ; NETWORKS ; SIGNALS ; BAND
收录类别SCI
语种英语
WOS研究方向Engineering ; Transportation
WOS类目Engineering, Civil ; Engineering, Electrical & Electronic ; Transportation Science & Technology
WOS记录号WOS:000352282500036
引用统计
文献类型期刊论文
条目标识符http://ir.ia.ac.cn/handle/173211/8128
专题复杂系统管理与控制国家重点实验室_先进控制与自动化
作者单位1.Peking Univ, Sch Elect Engn & Comp Sci, Beijing 100871, Peoples R China
2.Beijing Jiaotong Univ, State Key Lab Rail Traff Control & Safety, Beijing 100044, Peoples R China
3.S China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Guangdong, Peoples R China
4.Chinese Acad Sci, Inst Automat, State Key Lab Management & Control Complex Syst, Beijing 100190, Peoples R China
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Zhao, Zijun,Cheng, Xiang,Wen, Miaowen,et al. Constructed Data Pilot-Assisted Channel Estimators for Mobile Environments[J]. IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS,2015,16(2):947-957.
APA Zhao, Zijun,Cheng, Xiang,Wen, Miaowen,Yang, Liuqing,&Jiao, Bingli.(2015).Constructed Data Pilot-Assisted Channel Estimators for Mobile Environments.IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS,16(2),947-957.
MLA Zhao, Zijun,et al."Constructed Data Pilot-Assisted Channel Estimators for Mobile Environments".IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS 16.2(2015):947-957.
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