Time-domain N-continuous OFDM: system architecture and performance analysis

Wei, Peng, Dan, Lilin, Xiao, Yue, Xiang, Wei, and Li, Shaoqian (2017) Time-domain N-continuous OFDM: system architecture and performance analysis. IEEE Transactions on Vehicular Technology, 66 (3). pp. 2394-2407.

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Abstract

N-continuous orthogonal frequency-division multiplexing (NC-OFDM) is a promising technique to achieve significant sidelobe suppression for baseband OFDM signals. However, NC-OFDM usually has high implementation complexity that limits its practical applications. Based on conventional NC-OFDM, this paper proposes a new technique, termed time-domain N-continuous OFDM (TD-NC-OFDM), which shifts the processing burden from the frequency domain to the time domain. This is achieved by adding a smooth signal, which is linearly combined by rectangularly pulsed OFDM basis signals consisting of a novel basis set. We prove that TD-NC-OFDM with the basis set is essentially equivalent to conventional NC-OFDM. Furthermore, using the time-domain structure, an asymptotic spectrum analysis of N-continuous OFDM signals is obtained by developing a closed-form expression related to sidelobe decaying. This paper also examines the impact of TD-NC-OFDMon the received signal-to-interference-plus-noise ratio (SINR) and derives closed-form expressions.

Item ID: 50678
Item Type: Article (Research - C1)
ISSN: 1939-9359
Keywords: N-continuous orthogonal frequency division multiplexing (OFDM), sidelobe suppression
Funders: National Basic Research Program of China (NBRPC), South East University (SEU), National Key Laboratory of Science and Technology on Communications (NKLSTC)
Projects and Grants: NBRPC Grant 2013CB329001, SEU Open Research Fund Grant 2013D05, NCLSTC Foundation project Grant 9140C020108140C02005
Date Deposited: 20 Sep 2017 11:00
FoR Codes: 10 TECHNOLOGY > 1005 Communications Technologies > 100510 Wireless Communications @ 100%
SEO Codes: 89 INFORMATION AND COMMUNICATION SERVICES > 8901 Communication Networks and Services > 890103 Mobile Data Networks and Services @ 100%
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