• Study On Optical Communications
  • Vol. 49, Issue 5, 16 (2023)
Jun-yuan Nie1, Da-wei Zhang1,*, and Jing Zhang2
Author Affiliations
  • 1School of Electronic Information and Communication, Huazhong University of Science and Technology, Wuhan 430074, China
  • 2Key Lab.of Optical Fiber Sensing and Communications, University of Electronic Science and Technology, Chengdu 611731, China
  • show less
    DOI: 10.13756/j.gtxyj.2023.05.003 Cite this Article
    Jun-yuan Nie, Da-wei Zhang, Jing Zhang. Joint PAPR Reduction Technology Enabled by Neural Network-based Coding and Companding[J]. Study On Optical Communications, 2023, 49(5): 16 Copy Citation Text show less
    OFDM schematic diagram
    Fig. 1. OFDM schematic diagram
    FT-PRNet schematic diagram
    Fig. 2. FT-PRNet schematic diagram
    BER vs SNR at spreading ratio(0,10%,25%)
    Fig. 3. BER vs SNR at spreading ratio(0,10%,25%)
    BER at the subcarrier number of(16,64,256,1 024)
    Fig. 4. BER at the subcarrier number of(16,64,256,1 024)
    BER performance comparison with different schemes
    Fig. 5. BER performance comparison with different schemes
    Test block diagram
    Fig. 6. Test block diagram
    The relationship between PAPR and BER in measurement
    Fig. 7. The relationship between PAPR and BER in measurement
    模块维度(输入,输出)
    频域编码全连接(2×(1-anoc, 2×noc)
    时域压扩IFFT+滑窗-
    全连接+Relu(2×3,32)
    全连接+Relu(32,32)
    全连接(32,2)
    噪声2
    时域解压滑窗-
    全连接+Relu(2×3,64)
    全连接+Relu(64,64)
    全连接(64,2)
    FFT-
    频域解码全连接(2×noc, 2×(1-anoc)
    Table 1. Model architecture parameters
    参数数值设置
    比特数/符号k=4
    信噪比/dB8~24
    子载波数16,64,256,1 024
    权重λ0.05
    扩频比例0,10%,25%
    训练集/测试集60 000/1 024 OFDM符号
    优化器/学习率自适应矩估计(Adam)/5e-4
    批大小64
    Table 2. Basic parameters
    方案SNR=8~24 dB对应的CCDFCCDF=0.100,0.010,0.001 PAPR分别减少值
    Mu-law
    TNN
    PRNet
    FT-PRNet
    Table 3. Performance comparison with different schemes
    发射端参数接收端参数
    上位机信号带宽下位机信号带宽
    800 Mbit/s800 Mbit/s
    AWG带宽=30 GHzDSO带宽=30 GHz
    采样率64 GS/s采样率80 GS/s
    天线发工作频段天线收工作频段
    26.3~40.0 GHz26.3~40.0 GHz
    Table 4. Parameters of main device
    Jun-yuan Nie, Da-wei Zhang, Jing Zhang. Joint PAPR Reduction Technology Enabled by Neural Network-based Coding and Companding[J]. Study On Optical Communications, 2023, 49(5): 16
    Download Citation