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

Tian Zhang, Longfei Sun, Chenyi Zhao, Shuang Qiao*, Zabih Ghassemlooy

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)
5 Downloads (Pure)


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.

Original languageEnglish
Article number9260209
Pages (from-to)572-575
Number of pages4
JournalIEEE Wireless Communications Letters
Issue number3
Early online date16 Nov 2020
Publication statusPublished - 9 Mar 2021


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