Low-Complexity Receiver for HACO-OFDM in Optical Wireless Communications

Zhang, Tian, Sun, Longfei, Zhao, Chenyi, Qiao, Shuang and Ghassemlooy, Fary (2021) Low-Complexity Receiver for HACO-OFDM in Optical Wireless Communications. IEEE Wireless Communications Letters, 10 (3). pp. 572-575. ISSN 2162-2337

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Official URL: https://doi.org/10.1109/LWC.2020.3038181

Abstract

In this letter, a low-complexity receiver (Rx) is proposed for hybrid asymmetrically clipped optical orthogonal frequency division multiplexing (HACO-OFDM). Owing to the special time-domain property of HACO-OFDM, overlaid asymmetrically clipped OFDM (ACO-OFDM) and pulse-amplitude-modulated discrete multitoned (PAM-DMT) signals can be distinguished in the time domain to reduce its computational complexity. Besides, the near-optimal optical power allocation is further applied to optimize the proposed system performance. Theoretical analysis and simulation results demonstrate that, the proposed Rx can achieve nearly the same bit error rate (BER) performance as the BER-optimal iterative Rx but with an effective complexity reduction, thus demonstrating its application potential in high-speed optical communication systems.

Item Type: Article
Uncontrolled Keywords: BER, computational complexity, HACO-OFDM, optical power allocation
Subjects: F300 Physics
H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: John Coen
Date Deposited: 06 May 2021 07:37
Last Modified: 31 May 2021 14:38
URI: http://nrl.northumbria.ac.uk/id/eprint/46101

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