Bit-error rate investigation of satellite-to-ground downlink optical communication employing spatial diversity and modulation techniques

2019 ◽  
Vol 442 ◽  
pp. 123-131 ◽  
Author(s):  
Kangning Li ◽  
Bo Lin ◽  
Jing Ma
Keyword(s):  
Optical Communication ◽  
Bit Error Rate ◽  
Error Rate ◽  
Spatial Diversity ◽  
Modulation Techniques

Bit Error Rate Performance Analysis of Hybrid Subcarrier Intensity Modulation-Based FSO with Spatial Diversity in Various Weather Conditions

2019 ◽  
Vol 40 (3) ◽  
pp. 307-314 ◽  
Author(s):  
Rajat Kumar Giri ◽  
Bijayananda Patnaik
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Weather Conditions ◽  
Spatial Diversity ◽  
Intensity Modulation ◽  
Free Space Optical ◽  
Diversity Techniques ◽  
Link Distance ◽  
Simulation Results ◽  
Improved Performance

Abstract In this paper, we study the performance improvement of free space optical (FSO) communication system with spatial diversity techniques employing hybrid pulse position modulation-binary phase shift keying-subcarrier intensity modulation (PPM-BPSK-SIM). The involvement of multiple photo-detectors in diversity based FSO systems offers an effective way to overcome scntillation. In this paper, we have simulated the bit error rate (BER) with respect to different parameters like average SNR, link distance at various weather conditions. The simulation results are verified in Matlab environment with the mathematical analysis. The simulation results show that higher order single input multiple output (SIMO) system achieves better BER performance and hybrid PPM-BPSK-SIM has significant improved performance than the common modulation schemes like PPM, BPSK-SIM.

Bit Error Rate of Laser Linewidth in Spatial Coherent Optical Communication Link

2018 ◽  
Vol 55 (4) ◽  
pp. 040603
Author(s):  
孔英秀 Kong Yingxiu ◽  
柯熙政 Ke Xizheng ◽  
杨媛 Yang Yuan
Keyword(s):  
Optical Communication ◽  
Bit Error Rate ◽  
Error Rate ◽  
Communication Link ◽  
Laser Linewidth ◽  
Coherent Optical Communication

Bit error rate reduction of optical communication by means of Tip/Tilt correction

2018 ◽  
Vol 429 ◽  
pp. 152-157 ◽  
Author(s):  
Neda Shamsipour ◽  
Abolhasan Mobashery ◽  
Mohammad Moradi
Keyword(s):  
Optical Communication ◽  
Bit Error Rate ◽  
Error Rate ◽  
Rate Reduction ◽  
Tilt Correction

Bit-error-rate performance of non-line-of-sight UV transmission with spatial diversity reception

2012 ◽  
Vol 37 (19) ◽  
pp. 4143 ◽  
Author(s):  
Houfei Xiao ◽  
Yong Zuo ◽  
Jian Wu ◽  
Yan Li ◽  
Jintong Lin
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Spatial Diversity ◽  
Line Of Sight ◽  
Rate Performance ◽  
Diversity Reception ◽  
Non Line Of Sight

scholarly journals Bit Error Rate (BER) Performance of MIMO Systems in M-QAM with Nonlinear Effect

2019 ◽  
Vol 9 (2) ◽  
pp. 265-267
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Mimo Systems ◽  
Mimo System ◽  
High Amplitude ◽  
Transmitter Diversity ◽  
Receiver Diversity ◽  
Alamouti Scheme ◽  
Amplifier Model ◽  
Modulation Techniques

Out object in this paper it to study, the effect of nonlinearity on the bit error rate (BER) of MIMO systems in M-QAM modulation techniques. We consider Saleh’s model (power amplifier model) for the nonlinearity, and apply the nonlinear model on MIMO system with receiver diversity and transmitter diversity. For transmitter diversity, the Space-Time Block Coding (STBC) based on Alamouti scheme is used to provide transmits diversity for two transmitting antennas. The results show that, if there is a high variation in the amplitude of the M- QAM symbols, there will behigh effect of nonlinearity that causes high BER especially for high amplitude symbols at high SNR.

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