Low Complexity Transmitter Architecture for Optical OFDM Systems

A novel low-complexity optical orthogonal frequency division multiplexing (LCO-OFDM) transmission architecture is proposed in this letter. The LCO-OFDM transmitter consists of two branches, wherein the first and second branches use odd and even subcarriers, respectively. Specifically, only complex m...

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Bibliographic Details
Published in:IEEE communications letters 2021-08, Vol.25 (8), p.2649-2653
Main Author: Hu, Wei-Wen
Format: Article
Language:English
Subjects:
Adaptive optics
Bit error rate
Complexity
Complexity theory
Direct current
Fast Fourier transformations
Fourier transforms
Hermitian symmetry
low complexity
OFDM
Optical imaging
Optical OFDM
Optical transmitters
Orthogonal Frequency Division Multiplexing
Peak to average power ratio
Radio frequency
Subcarriers
Wireless communication
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Summary:A novel low-complexity optical orthogonal frequency division multiplexing (LCO-OFDM) transmission architecture is proposed in this letter. The LCO-OFDM transmitter consists of two branches, wherein the first and second branches use odd and even subcarriers, respectively. Specifically, only complex multiplications are required in modulated symbols of each branch without Hermitian symmetry and inverse fast Fourier transform operations. Transmission signals of LCO-OFDM can be obtained by transmitting real and imaginary parts of generated complex signals in each branch over two successive orthogonal frequency division multiplexing frames and adding a direct current bias to avoid zero clipping noise. Simulation results showed the optimum performance of LCO-OFDM in terms of both peak-to-average power ratio and bit error rate.
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2021.3063742