Estimation of bit error rate for pseudo-linear differential phase shift keyed transmission links

2009 ◽  
Vol 282 (7) ◽  
pp. 1455-1462 ◽  
Author(s):  
Terence Broderick
Keyword(s):  
Phase Shift ◽  
Bit Error Rate ◽  
Error Rate ◽  
Differential Phase Shift ◽  
Differential Phase ◽  
Linear Differential

scholarly journals Undersampled Differential Phase Shift On–Off Keying for Visible Light Vehicle-to-Vehicle Communication

2021 ◽  
Vol 11 (5) ◽  
pp. 2195
Author(s):  
Michael Plattner ◽  
Gerald Ostermayer
Keyword(s):  
Phase Shift ◽  
Bit Error Rate ◽  
Error Rate ◽  
Data Transmission ◽  
Raw Data ◽  
Differential Phase Shift ◽  
Differential Phase ◽  
Vehicle Communication ◽  
Vehicle To Vehicle ◽  
Vehicle To Vehicle Communication

An important development direction for the future of the automotive industry is connected and cooperative vehicles. Some functionalities in traffic need the cars to communicate with each other. In platooning, multiple cars driving in succession reduce the distances between them to drive in the slipstream of each other to reduce drag, energy consumption, emissions, and the probability of traffic jams. The car in front controls the car behind remotely, so all cars in the platoon can accelerate and decelerate simultaneously. In this paper, a system for vehicle-to-vehicle communication is proposed using modulated taillights for transmission and an off-the-shelf camera with CMOS image sensor for reception. An Undersampled Differential Phase Shift On–Off Keying modulation method is used to transmit data. With a frame sampling rate of 30 FPS and two individually modulated taillights, a raw data transmission rate of up to 60 bits per second is possible. Of course, such a slow communication channel is not applicable for time-sensitive data transmission. However, the big benefit of this system is that the identity of the sender of the message can be verified, because it is visible in the captured camera image. Thus, this channel can be used to establish a secure and fast connection in another channel, e.g., via 5G or 802.11p, by sending a verification key or the fingerprint of a public key. The focus of this paper is to optimize the raw data transmission of the proposed system, to make it applicable in traffic and to reduce the bit error rate. An improved modulation mode with smoother phase shifts is used that can reduce the visible flickering when data is transmitted. By additionally adjusting the pulse width ratio of the modulation signal and by analyzing the impact of synchronization offsets between transmitter and receiver, major improvements of the bit error rate (BER) are possible. In previously published research, such a system without the mentioned adjustments was able to transmit data with a BER of 3.46%. Experiments showed that with those adjustments a BER of 0.48% can be achieved, which means 86% of the bit errors are prevented.

scholarly journals Comparison of DPSK and RZ-DPSK Modulations in Optical Channel with Speed of 10 Gbps

2017 ◽  
Vol 41 (2) ◽  
pp. 185-196 ◽  
Author(s):  
Petr Ivaniga ◽  
Tomáš Ivaniga
Keyword(s):  
Phase Shift ◽  
Optical Communication ◽  
Error Rate ◽  
High Speed ◽  
Optical Network ◽  
Optical Channel ◽  
Q Factor ◽  
Differential Phase Shift ◽  
Differential Phase ◽  
Optic Waveguide

<div>This article is devoted to the problematic of error rate and modulations in optical communication. Optic waveguide shows insufficiencies in high speed transfers manifested by corrupted transfer. Although modern technological processes contributed to lowering these insufficiencies, it would be uneconomical to completely reconstruct the optical network infrastructure. The solution is only partial so we approach more economical methods, such as modulations. The article works with a 10 Gbps channel with two modulation types, namely DPSK (Differential Phase Shift Keyed) and RZ-DPSK (Return to Zero-Differential Phase Shift Keyed). These modulations are evaluated and compared according to BER (Bit Error Rate) and Q-factor.<div> </div></div>

Modified DP-Q and MGF BER

2015 ◽  
pp. 285-296
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Single Channel ◽  
Qualitative Behavior ◽  
Differential Phase Shift ◽  
Wavelength Division ◽  
Differential Phase ◽  
Wavelength Division Multiplexed ◽  
Shift Keying ◽  
Point To Point

The optical return-to-zero differential phase shift keying system is analyzed in this chapter to determine the accuracy of the recently proposed differential phase Q method in estimating the bit error rate. It is found that this method consistently underestimates the bit error rate though it successfully predicts the qualitative behavior of single channel and wavelength division multiplexed systems for back-to-back and point-to-point configurations. A simple modification reduced the underestimation and produced highly accurate estimation.

scholarly journals 1310 nm differential-phase-shift QKD system using superconducting single-photon detectors

2009 ◽  
Vol 11 (4) ◽  
pp. 045020 ◽  
Author(s):  
Lijun Ma ◽  
S Nam ◽  
Hai Xu ◽  
B Baek ◽  
Tiejun Chang ◽  
...  
Keyword(s):  
Phase Shift ◽  
Single Photon ◽  
Photon Detectors ◽  
Differential Phase Shift ◽  
Differential Phase ◽  
Single Photon Detectors

A fiber-based differential phase shift quantum key distribution scheme with higher key creation efficiency

2009 ◽  
Vol 282 (14) ◽  
pp. 3037-3039 ◽  
Author(s):  
Huani Zhang ◽  
Jindong Wang ◽  
Xiaobao Liu ◽  
Zhengjun Wei ◽  
Songhao Liu
Keyword(s):  
Phase Shift ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Differential Phase Shift ◽  
Differential Phase ◽  
Distribution Scheme

Design and Performance Analysis of 2D OCDMA System with Polarization States

2016 ◽  
Vol 37 (4) ◽  
Author(s):  
Manisha Bharti ◽  
Ajay K. Sharma ◽  
Manoj Kumar
Keyword(s):  
Phase Shift ◽  
Polarization State ◽  
Phase Shift Keying ◽  
Modulation Formats ◽  
Differential Phase Shift ◽  
Differential Phase ◽  
Differential Phase Shift Keying ◽  
Shift Keying ◽  
Polarization States ◽  
Code Division Multiple

AbstractThis paper focuses on increasing the number of subscribers in optical code-division multiple access (OCDMA) system by using one of the features of light signal that it can be propagated in two polarization states. The performance of two-dimensional (2D) OCDMA system based on wavelength-time coding scheme by adding polarization state is investigated at varying data rates from 1 GHz to 6 GHz and for various modulation formats. It is reported that with increase in data rate of system, the performance of the system deteriorates due to polarization mode dispersion. Non-return to-zero (RZ), return to-zero (RZ), carrier suppressed return-to-zero (CSRZ) and differential phase shift keying (DPSK) modulation formats are simulated for a single user system with polarization. Investigations reveal that differential phase shift keying (DPSK) modulation format suits best to the proposed system and exhibit the potential to improve the flexibility of system for more number of users. The investigations are reported in terms of Q-factor, BER, received optical power (ROP) and eye diagrams.

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