4PSK Signal Based on FPGA

2013 ◽  
Vol 694-697 ◽  
pp. 2870-2873
Author(s):  
Dong Ming Lei ◽  
Ping Li ◽  
Nian Yu Zou
Keyword(s):  
Phase Shift ◽  
Phase Shift Keying ◽  
Development Environment ◽  
Modulation And Demodulation ◽  
Shift Keying ◽  
Simulation Results ◽  
Demodulation Method

Based on the traditional demodulation method of four phase shift keying (QPSK), a QPSK demodulation model was proposed. The FPGA-based QPSK modulation and demodulation system and circuit had been achieved. In Xilinx ISE12.3 development environment, using the SPARTAN-3E development board, the simulation results demonstrate the feasibility of this design.

An All Optical OR Gate Using BPSK Technique Inside 2D Photonic Crystals

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Bahman Shahmohammadi ◽  
Alireza Andalib
Keyword(s):  
Phase Shift ◽  
Photonic Crystals ◽  
Destructive Interference ◽  
Two Dimensional ◽  
Phase Shift Keying ◽  
All Optical ◽  
Shift Keying ◽  
Working Principle ◽  
Simulation Results ◽  
Or Gate

AbstractIn this paper, we are going to design simulate an all optical OR gate based on two-dimensional photonic crystals. The proposed structure was designed based on phase shift keying technique. The working principle of the proposed structure is based on constructive and destructive interference of optical beams. The simulation results shows that the rise and fall times are 0.8 and 0.2 ps, respectively.

Design and Simulation of 2PSK Modem

2013 ◽  
Vol 321-324 ◽  
pp. 2914-2918
Author(s):  
Peng Fei Li ◽  
Jin Ping Li ◽  
Xin Zhao
Keyword(s):  
Mathematical Model ◽  
Phase Shift ◽  
Phase Shift Keying ◽  
Direct Digital Synthesis ◽  
Modulation And Demodulation ◽  
Shift Keying ◽  
Digital Synthesis ◽  
Hardware Circuit ◽  
Binary Phase Shift Keying ◽  
Programming Time

Based on the principle of the modulation and demodulation of Binary Phase Shift Keying(2PSK),a mathematical model for the modulation and demodulation of the 2PSK was built and the carrier signal was designed using the technology of Direct Digital Synthesis (DDS).Then,a model to simulate the hardware circuit of the modulation and demodulation of 2PSK was built,and then analyzed in Matlab and Modelsim.Simulation results show that the model not only properly realizes the function of 2PSK modulator-demodulator,but it also simplifies the hardware circuit and reduces the programming time.

Physical Layer Technology for Extremely Low Speed Communication System in the Computer Network

2014 ◽  
Vol 644-650 ◽  
pp. 4005-4008
Author(s):  
Jing Chen ◽  
Yi Miao Hu ◽  
Le Nan Wu
Keyword(s):  
Phase Shift ◽  
Communication System ◽  
Computer Network ◽  
Physical Layer ◽  
Spectrum Efficiency ◽  
Phase Shift Keying ◽  
Low Speed ◽  
Shift Keying ◽  
Simulation Results ◽  
Ber Performance

The problem of extremely low speed communication (ELSC) system in the computer network based on multi-position phase shift keying (MPPSK) is considered in this paper. The realization of extremely low speed system is described, and preliminary simulation results of this system are conducted. The BER performance of the MPPSK-based ELSC system is compared with that of MSK modulation, which is commonly used in the ELSC system. Furthermore, the simulation results show that MPPSK-based ELSC system with higher spectrum efficiency has better BER performance than that of MSK modulation, which confirms the efficiency of the proposed system.

THE RF CIRCUIT DESIGN OF POWER AND DATA CONTACTLESS TRANSMISSION FOR ISO/IEC 14443-2 TYPE B

2011 ◽  
Vol 20 (08) ◽  
pp. 1637-1658 ◽  
Author(s):  
CHIA-CHUN TSAI ◽  
SHENG-BIN DAI ◽  
TRONG-YEN LEE
Keyword(s):  
Phase Shift ◽  
Circuit Design ◽  
Integrated Circuit ◽  
Data Transmission ◽  
Cmos Process ◽  
Phase Shift Keying ◽  
Type B ◽  
Shift Keying ◽  
Simulation Results ◽  
Binary Phase Shift Keying

In this paper, we design and implement an integrated circuit system for contactless interface transmission to conform the transfer protocol of ISO/IEC 14443-2 Type B. The system consists of two major parts, interrogator and transponder, for magnetic power and data transmission. The power and data can synchronously be transferred from the interrogator to the transponder with 10% amplitude shift keying modulation of mixing both carrier 13.56 MHz and data rate 106 Kbps. Another data can be backward to the interrogator from the transponder with the mixed binary phase shift keying modulation. Simulation results to the whole chip based on TSMC 0.35 μm CMOS process have approved using HSPICE.

Performance Comparison between DPSK and OQPSK modulation approaches in multi environments channels with Matlab Simulink models

2019 ◽  
Vol 7 (1) ◽  
pp. 30-39
Author(s):  
Fatima faydhe Al- Azzawi ◽  
Faeza Abas Abid ◽  
Zainab faydhe Al-Azzawi
Keyword(s):  
Phase Shift ◽  
Fading Channels ◽  
Additive White Gaussian Noise ◽  
Block Codes ◽  
Performance Comparison ◽  
Phase Shift Keying ◽  
Differential Phase Shift ◽  
Matlab Simulink ◽  
Communication Industry ◽  
Shift Keying

Phase shift keying modulation approaches are widely used in the communication industry. Differential phase shift keying (DPSK) and Offset Quadrature phase shift keying (OQPSK) schemes are chosen to be investigated is multi environment channels, where both systems are designed using MATLAB Simulink and tested. Cross talk and unity of signals generated from DPSK and OQPSK are examined using Cross-correlation and auto-correlation, respectively. In this research a proposed system included improvement in bit error rate (BER) of both systems in  the additive white Gaussian Noise (AWGN) channel, by using the convolutional and block codes, by increasing the ratio of energy in the specular component to the energy in the diffuse component (k) and  the diversity order BER in the fading channels will be improved in both systems.    

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