Preamble-based channel estimation in OFDM/OQAM systems: A review

被引：196
作者：
Kofidis, Eleftherios [1 ]
Katselis, Dimitrios [2 ]
Rontogiannis, Athanasios [3 ]
Theodoridis, Sergios [4 ]
机构：
[1] Univ Piraeus, Dept Stat & Insurance Sci, Piraeus 18534, Greece
[2] KTH Royal Inst Technol, Sch Elect Engn, Signal Proc & Automat Control Labs, Stockholm, Sweden
[3] Natl Observ Athens, Inst Astron Astrophys Space Applicat & Remote Sen, Athens 15236, Greece
[4] Univ Athens, Dept Informat & Telecommun, Athens 15784, Greece
来源：
SIGNAL PROCESSING | 2013年 / 93卷 / 07期
基金：
欧洲研究理事会; 瑞典研究理事会;
关键词：
Channel estimation; Filter bank-based multicarrier (FBMC); Intrinsic interference; Orthogonal frequency division multiplexing (OFDM); Offset QAM (OQAM); Preamble; OFDM; COMMUNICATION; DESIGN;
D O I：
10.1016/j.sigpro.2013.01.013
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：
Filter bank-based multicarrier communications (FBMC) have recently attracted increased interest in both wired (e.g., xDSL, PLC) and wireless (e.g., cognitive radio) applications, due to their enhanced flexibility, higher spectral efficiency, and better spectral containment compared to conventional OFDM. A particular type of FBMC, the so-called FBMC/OQAM or OFDM/OQAM system, consisting of pulse shaped OFDM carrying offset QAM (OQAM) symbols, has received increasing attention due to, among other features, its higher spectral efficiency and implementation simplicity. It suffers, however, from an imaginary inter-carrier/inter-symbol interference that complicates signal processing tasks such as channel estimation. This paper focuses on channel estimation for OFDM/OQAM systems based on a known preamble. A review of the existing preamble structures and associated channel estimation methods is given, for both single- (SISO) and multiple-antenna (MIMO) systems. The various preambles are compared via simulations in both mildly and highly frequency selective channels. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：2038 / 2054
页数：17
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