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Interference-free hybrid optical OFDM with low-complexity receiver for wireless optical communications

Interference-free hybrid optical OFDM with low-complexity receiver for wireless optical communications
Interference-free hybrid optical OFDM with low-complexity receiver for wireless optical communications

In optical wireless communication (OWC), conventional superimposed optical orthogonal frequency division multiplexing (OOFDM) techniques, such as hybrid asymmetrically clipped OOFDM (HACO-OFDM), require an additional operation of interference cancellation to decode transmitted symbols, which leads to relatively high receiver complexity with processing delay. In this letter, we propose a novel superimposed OOFDM scheme with low-complexity receiver, named as interference-free hybrid OOFDM (IFHO-OFDM), for OWC. In the proposed IFHO-OFDM, two hybrid OOFDM components are combined for simultaneous transmission to achieve the appealing advantages of high spectral efficiency, and a time-selective bias is designed to guarantee the non-negativity while maintaining high power efficiency. Moreover, we propose to superimpose the two hybrid OOFDM components in an interference-free way, and thus, it can be readily demodulated by a standard low-complexity OFDM receiver. Simulation results verified the superiority of the proposed IFHO-OFDM in terms of both peak-to-average-power ratio (PAPR) and bit error rate (BER) compared to HACO-OFDM.

hybrid asymmetrically clipped O-OFDM (HACO-OFDM), optical orthogonal frequency division multiplexing (OOFDM), Optical wireless communication (OWC), peak-to-average-power ratio (PAPR)
1089-7798
818-821
Li, Baolong
63383588-91d3-448e-a94e-2779484f5a7f
Feng, Simeng
038a3c0d-9d57-4031-8d38-2203ea230e79
Xu, Wei
cef87ede-4edd-4bde-a9f8-a4c63e18c418
Li, Zhengquan
7a0fc2f0-10f0-42ee-9430-3a8cddd70d84
Li, Baolong
63383588-91d3-448e-a94e-2779484f5a7f
Feng, Simeng
038a3c0d-9d57-4031-8d38-2203ea230e79
Xu, Wei
cef87ede-4edd-4bde-a9f8-a4c63e18c418
Li, Zhengquan
7a0fc2f0-10f0-42ee-9430-3a8cddd70d84

Li, Baolong, Feng, Simeng, Xu, Wei and Li, Zhengquan (2019) Interference-free hybrid optical OFDM with low-complexity receiver for wireless optical communications. IEEE Communications Letters, 23 (5), 818-821, [8675333]. (doi:10.1109/LCOMM.2019.2907953).

Record type: Article

Abstract

In optical wireless communication (OWC), conventional superimposed optical orthogonal frequency division multiplexing (OOFDM) techniques, such as hybrid asymmetrically clipped OOFDM (HACO-OFDM), require an additional operation of interference cancellation to decode transmitted symbols, which leads to relatively high receiver complexity with processing delay. In this letter, we propose a novel superimposed OOFDM scheme with low-complexity receiver, named as interference-free hybrid OOFDM (IFHO-OFDM), for OWC. In the proposed IFHO-OFDM, two hybrid OOFDM components are combined for simultaneous transmission to achieve the appealing advantages of high spectral efficiency, and a time-selective bias is designed to guarantee the non-negativity while maintaining high power efficiency. Moreover, we propose to superimpose the two hybrid OOFDM components in an interference-free way, and thus, it can be readily demodulated by a standard low-complexity OFDM receiver. Simulation results verified the superiority of the proposed IFHO-OFDM in terms of both peak-to-average-power ratio (PAPR) and bit error rate (BER) compared to HACO-OFDM.

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More information

e-pub ahead of print date: 27 March 2019
Published date: 1 May 2019
Keywords: hybrid asymmetrically clipped O-OFDM (HACO-OFDM), optical orthogonal frequency division multiplexing (OOFDM), Optical wireless communication (OWC), peak-to-average-power ratio (PAPR)

Identifiers

Local EPrints ID: 433940
URI: http://eprints.soton.ac.uk/id/eprint/433940
ISSN: 1089-7798
PURE UUID: f52e15de-206c-454a-a510-9705544ca0d8

Catalogue record

Date deposited: 06 Sep 2019 16:30
Last modified: 07 Oct 2020 00:31

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Contributors

Author: Baolong Li
Author: Simeng Feng
Author: Wei Xu
Author: Zhengquan Li

University divisions

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