Channel estimation in CP-OQAM-OFDM systems

Dejin Kong; Xiang Gen Xia; Tao Jiang; Xiqi Gao

doi:10.1109/TSP.2014.2356441

Channel estimation in CP-OQAM-OFDM systems

Dejin Kong^*, Xiang Gen Xia, Tao Jiang, Xiqi Gao

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

Due to the insertion of cyclic prefix (CP), orthogonal-frequency-division multiplexing (OFDM) systems with offset quadrature amplitude modulation (OQAM) (OQAM-OFDM) and CP, denoted as CP-OQAM-OFDM, systems have more robustness to combat a multi-path fading channel and simpler and better receivers than the conventional OQAM-OFDM systems. In this paper, two channel estimators, i.e., weighted least square (WLS) and pairs of pilots (POP) are presented in CP-OQAM-OFDM systems. To evaluate the proposed WLS and POP estimators, the corresponding Cramér-Rao bounds are given for comparison. In addition, the computational complexities of the proposed estimators are analyzed as well. Simulation results demonstrate that both of the proposed channel estimators can achieve good bit error rate (BER) performance.

Original language	English
Article number	6894619
Pages (from-to)	5775-5786
Number of pages	12
Journal	IEEE Transactions on Signal Processing
Volume	62
Issue number	21
DOIs	https://doi.org/10.1109/TSP.2014.2356441
Publication status	Published - 1 Nov 2014
Externally published	Yes

Keywords

Channel estimation
OFDM
OQAM-OFDM
equalization
filterbank multicarrier modulation

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10.1109/TSP.2014.2356441

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title = "Channel estimation in CP-OQAM-OFDM systems",

abstract = "Due to the insertion of cyclic prefix (CP), orthogonal-frequency-division multiplexing (OFDM) systems with offset quadrature amplitude modulation (OQAM) (OQAM-OFDM) and CP, denoted as CP-OQAM-OFDM, systems have more robustness to combat a multi-path fading channel and simpler and better receivers than the conventional OQAM-OFDM systems. In this paper, two channel estimators, i.e., weighted least square (WLS) and pairs of pilots (POP) are presented in CP-OQAM-OFDM systems. To evaluate the proposed WLS and POP estimators, the corresponding Cram{\'e}r-Rao bounds are given for comparison. In addition, the computational complexities of the proposed estimators are analyzed as well. Simulation results demonstrate that both of the proposed channel estimators can achieve good bit error rate (BER) performance.",

keywords = "Channel estimation, OFDM, OQAM-OFDM, equalization, filterbank multicarrier modulation",

author = "Dejin Kong and Xia, {Xiang Gen} and Tao Jiang and Xiqi Gao",

note = "Publisher Copyright: {\textcopyright} 2014 IEEE.",

year = "2014",

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doi = "10.1109/TSP.2014.2356441",

language = "English",

volume = "62",

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T1 - Channel estimation in CP-OQAM-OFDM systems

AU - Kong, Dejin

AU - Xia, Xiang Gen

AU - Jiang, Tao

AU - Gao, Xiqi

PY - 2014/11/1

Y1 - 2014/11/1

N2 - Due to the insertion of cyclic prefix (CP), orthogonal-frequency-division multiplexing (OFDM) systems with offset quadrature amplitude modulation (OQAM) (OQAM-OFDM) and CP, denoted as CP-OQAM-OFDM, systems have more robustness to combat a multi-path fading channel and simpler and better receivers than the conventional OQAM-OFDM systems. In this paper, two channel estimators, i.e., weighted least square (WLS) and pairs of pilots (POP) are presented in CP-OQAM-OFDM systems. To evaluate the proposed WLS and POP estimators, the corresponding Cramér-Rao bounds are given for comparison. In addition, the computational complexities of the proposed estimators are analyzed as well. Simulation results demonstrate that both of the proposed channel estimators can achieve good bit error rate (BER) performance.

AB - Due to the insertion of cyclic prefix (CP), orthogonal-frequency-division multiplexing (OFDM) systems with offset quadrature amplitude modulation (OQAM) (OQAM-OFDM) and CP, denoted as CP-OQAM-OFDM, systems have more robustness to combat a multi-path fading channel and simpler and better receivers than the conventional OQAM-OFDM systems. In this paper, two channel estimators, i.e., weighted least square (WLS) and pairs of pilots (POP) are presented in CP-OQAM-OFDM systems. To evaluate the proposed WLS and POP estimators, the corresponding Cramér-Rao bounds are given for comparison. In addition, the computational complexities of the proposed estimators are analyzed as well. Simulation results demonstrate that both of the proposed channel estimators can achieve good bit error rate (BER) performance.

KW - Channel estimation

KW - OFDM

KW - OQAM-OFDM

KW - equalization

KW - filterbank multicarrier modulation

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Channel estimation in CP-OQAM-OFDM systems

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Keywords

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