Improving the transmission performance for an externally modulated baseband single sideband OFDM signal using nonlinear post-compensation and differential encoding schemes

2007 ◽  
Author(s):  
Wei-Ren Peng ◽  
Sien Chi
Keyword(s):  
Transmission Performance ◽  
Differential Encoding ◽  
Single Sideband ◽  
Ofdm Signal

The transmission performance of the single sideband optical millimeter-wave with BPSK signal in the duplex radio-over-fiber link

2008 ◽  
Vol 281 (19) ◽  
pp. 4876-4881 ◽  
Author(s):  
Jianxin Ma ◽  
J. Yu ◽  
Xiangjun Xin ◽  
Chongxiu Yu ◽  
Huiying Huang ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Radio Over Fiber ◽  
Transmission Performance ◽  
Single Sideband ◽  
Fiber Link

scholarly journals 60GHz Reverse Modulation Fiber-Wireless System with Two Jointed DSP Algorithms

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Long Chen ◽  
Ziwei He ◽  
Lv Zhao ◽  
Bin Zhong
Keyword(s):  
Forward Error Correction ◽  
Average Power ◽  
Power Ratio ◽  
Soft Decision ◽  
Transmission Performance ◽  
Wireless System ◽  
Ofdm Signal ◽  
Channel Frequency Response ◽  
Forward Error ◽  
First Time

In this paper, we propose a reverse modulation fiber-wireless system with two jointed DSP algorithms. The signal in the system is OFDM modulated millimeter wave (mm-wave) at 60GHz. In order to improve transmission of this system, the discrete Fourier transform spread (DFT-Spread) technology and the averaging of the channel frequency response (H-averaging) technology are applied. The DFT-Spread technology helps to reduce the peak-to-average power ratio (PAPR) of the OFDM signal, and the H-averaging technology helps to optimize channel estimation. This is the first time that the two kinds of technology were used together in this reverse modulation system. According to the simulation, the 22Gbit/s 16QAM-OFDM at 60GHz can be generated and transmitted for 90km fiber transmission under the soft decision forward error correction (SD-FEC) threshold 3.8×10-3. The results show that the two jointed DSP algorithms can improve the reverse modulation system transmission performance obviously.

Sign in / Sign up

Export Citation Format

Share Document