ANALYSIS OF BEAT NOISE BETWEEN MULTIPOSITION AMPLITUDE-PHASE SUB-CARRIER SIGNALS IN DIRECT PHOTODETECTION

2020 ◽  
Keyword(s):  
Beat Noise

Beat Noise Suppression Using Adaptive Line Enhancers for FM Radio in Motor Vehicles

2018 ◽  
Vol 138 (5) ◽  
pp. 593-602 ◽  
Author(s):  
Arata Kawamura ◽  
Takahiro Yamashita ◽  
Youji Iiguni
Keyword(s):  
Noise Suppression ◽  
Motor Vehicles ◽  
Beat Noise ◽  
Fm Radio

Hybrid WDM free space optical system using CSRZ and Rayleigh backscattering noise mitigation

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Rupinder Kaur ◽  
Charanjit Singh ◽  
Rajbir Kaur
Keyword(s):  
Wavelength Division Multiplexing ◽  
Free Space ◽  
Free Space Optical ◽  
Power Budget ◽  
Noise Mitigation ◽  
Wavelength Division ◽  
Rayleigh Backscattering ◽  
Beat Noise ◽  
Optical Line ◽  
Insertion Losses

Abstract Hybrid wavelength-division-multiplexing (WDM) and free space optical (FSO) access networks are getting great attention due to numerous advantages. In this work, hybrid WDM-FSO system is demonstrated for 55 km at capacity of 5 × 10 Gbit/s using compressed spectrum return to zero (CSRZ) WDM-FSO in downstream and nonreturn to zero (NRZ) in upstream for demonstrating transmitter diversity which inturn decrease the interchannel interference. For the suppression of Rayleigh backscattering (RB) interferometric beat noise, bidirectional cyclic multiplexer is employed. Cyclic multiplexer provide λ 1 to λ 5 wavelengths for optical line terminal (OLT) to ONU transmission and λ 2 to λ 6 for ONU to OLT transmission. Insertion losses of each component are considered and in the end, power budget is also calculated. Results revealed that FSO length of 780–1050 m are obtained using various WDM-FSO downstream signals and their power budget, redundant budget, maximum distance, and insertion losses also calculated.

scholarly journals 3-dB signal-ASE beat noise reduction of coherent multi-carrier signal utilizing phase sensitive amplification

2012 ◽  
Vol 20 (22) ◽  
pp. 24727 ◽  
Author(s):  
Takeshi Umeki ◽  
Hidehiko Takara ◽  
Yutaka Miyamoto ◽  
Masaki Asobe
Keyword(s):  
Noise Reduction ◽  
Beat Noise ◽  
Phase Sensitive ◽  
Phase Sensitive Amplification

On the Experimental Characterization of Beat Noise in 2-D Time-Spreading Wavelength-Hopping OCDMA Systems

2006 ◽  
Vol 18 (21) ◽  
pp. 2314-2316 ◽  
Author(s):  
Camille-Sophie Bres ◽  
Yue-Kai Huang ◽  
Darren Rand ◽  
Ivan Glesk ◽  
Paul R. Prucnal ◽  
...  
Keyword(s):  
Experimental Characterization ◽  
Beat Noise

scholarly journals Maximum likelihood detection with beat noise estimation for minimizing bit error rate in OCDM-based system

2009 ◽  
Vol 17 (15) ◽  
pp. 12433 ◽  
Author(s):  
Takahito Kirihara ◽  
Noriki Miki ◽  
Shin Kaneko ◽  
Hideaki Kimura ◽  
Kiyomi Kumozaki
Keyword(s):  
Maximum Likelihood ◽  
Bit Error Rate ◽  
Error Rate ◽  
Noise Estimation ◽  
Maximum Likelihood Detection ◽  
Beat Noise
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