scholarly journals Analysis of Spectral Sensing Using Angle-Time Cyclostationarity

Sensors ◽  
2019 ◽  
Vol 19 (19) ◽  
pp. 4222 ◽  
Author(s):  
Pedro Souza ◽  
Vinicius Souza ◽  
Luiz F. Silveira
Keyword(s):  
Detection Rate ◽  
Phase Variation ◽  
Phase Shift Keying ◽  
Nonlinear Phase ◽  
Shift Keying ◽  
Simulation Results ◽  
Improved Performance ◽  
Detection Of Signals ◽  
Spectral Sensing ◽  
Binary Phase Shift Keying

This work presents a novel spectral sensing method for the detection of signals presenting nonlinear phase variation over time. The introduced method is based on the angle-time cyclostationarity theory, which applies transformations to the signal to be sensed in order to mitigate the effects of nonlinear phase variation. The architecture is employed for sensing binary phase shift keying (BPSK) signals, being also compared with time cyclostationarity. The obtained simulation results clearly demonstrate the efficiency of the proposed approach, while presenting improved performance in terms of the detection rate of primary users increased by about 8 dB.

scholarly journals Improving the Performance of Concatenated Convolutional Codes in the Error Floor Region

2012 ◽  
Vol 2 (1-2) ◽  
Author(s):  
The Cuong Dinh ◽  
Xuan Nam Tran ◽  
Huu-Tue Huynh
Keyword(s):  
Iterative Decoding ◽  
Convolutional Codes ◽  
Coded Modulation ◽  
Phase Shift Keying ◽  
Error Floor ◽  
Shift Keying ◽  
Improved Performance ◽  
Binary Phase Shift Keying ◽  
Bit Interleaved Coded Modulation ◽  
Bpsk Modulation

The idea of the Bit-Interleaved Coded Modulation with Iterative Decoding (BICM-ID) is applied to classic schemes of both parallel and serial concatenation of convolutional codes (PCCC and SCCC) with Binary Phase Shift Keying (BPSK) modulation. Simulation results show that slightly modified PCCC and SCCC schemes provide significant improved performance of the encoder in the error floor region in terms of much lower bit error rate (BER).

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.

scholarly journals Application of Ultra Narrow Band Modulation in Enhanced Loran System

Sensors ◽  
2021 ◽  
Vol 21 (13) ◽  
pp. 4347
Author(s):  
Boyun Lyu ◽  
Yu Hua ◽  
Jiangbin Yuan ◽  
Shifeng Li
Keyword(s):  
Narrow Band ◽  
Data Rate ◽  
Modulation Method ◽  
Phase Shift Keying ◽  
Spectrum Utilization ◽  
Frequency Domains ◽  
Shift Keying ◽  
Modulation Methods ◽  
Binary Phase Shift Keying ◽  
Signal Time

The Enhanced Loran (eLoran) system is valued for its important role in the positioning, navigation, and timing fields; however, with its current modulation methods, low data rate restricts its development. Ultra narrow band (UNB) modulation is a modulation method with extremely high spectrum utilization. If UNB modulation can be applied to the eLoran system, it will be very helpful. The extended binary phase shift keying modulation in UNB modulation is selected for a detailed study, parameters and application model are designed according to its unique characteristics of signal time and frequency domains, and it is verified through simulation that the application of this modulation not only meets the design constraints of the eLoran system but also does not affect the reception of the respective signals of both parties. Several feasible schemes are compared, analyzed, and selected. Studies have revealed that application of UNB modulation in the eLoran system is feasible, and it will increase the data rate of the system by dozens of times.

A Novel Symbol Rate Estimation Algorithm for Phase Modulating Signals in Wireless Communications

2013 ◽  
Vol 443 ◽  
pp. 392-396
Author(s):  
Peng Zhou ◽  
Chi Sheng Li
Keyword(s):  
Signal To Noise Ratio ◽  
Estimation Algorithm ◽  
Frequency Resolution ◽  
Phase Shift Keying ◽  
Phase Jump ◽  
Rate Estimation ◽  
Awgn Channel ◽  
Symbol Rate ◽  
Shift Keying ◽  
Simulation Results

In this paper, we proposed a new symbol rate estimation algorithm for phase shift keying (PSK) and qua drawtube amplitude modulation (QAM) signals in AWGN channel First we constructe a delay-multiplied signal, from which we obtaine the modulated information. Then we calculated the instantaneous autocorrelation of the delay-multiplied signal to pick out the phase jump. To eliminate the restriction of frequency resolution in fast Fourier transform, we performed a Chirp-Z transform to find out the exact spectral line which represente the symbol rate of the signal to be analyzed. Compared with the existing algorithms, it is a simple solution that has a better performance and accuracy in low signal-to-noise-ratio channel conditions. Simulation results show that the probability of relative estimating deviation below 0.1% reaches 100% and the average and standard variance of absolute estimation deviation are at the magnitude of 10-2 when SNR is over 2dB.

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.

Multiuser communication scheme based on binary phase-shift keying and chaos for telemedicine

2018 ◽  
Vol 162 ◽  
pp. 165-175 ◽  
Author(s):  
J.A. Michel-Macarty ◽  
M.A. Murillo-Escobar ◽  
R.M. López-Gutiérrez ◽  
C. Cruz-Hernández ◽  
L. Cardoza-Avendaño
Keyword(s):  
Phase Shift ◽  
Phase Shift Keying ◽  
Multiuser Communication ◽  
Binary Phase ◽  
Shift Keying ◽  
Communication Scheme ◽  
Binary Phase Shift Keying

Reduction of PAPR in FBMC System Using Different Reduction Techniques

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
Arun Kumar ◽  
Hemant Rathore
Keyword(s):  
Phase Shift ◽  
Research Study ◽  
Average Power ◽  
Phase Shift Keying ◽  
Reduction Techniques ◽  
Quadrature Phase Shift Keying ◽  
Quadrature Phase ◽  
Shift Keying ◽  
Clipping Technique ◽  
Binary Phase Shift Keying

AbstractIn this research study, different Peak Average Power Ratio (PAPR) based reduction techniques, namely, A-Law companding, µ-Law companding, Clipping & Filtering and Clipping are analyzed for Filter Band Multi-Carrier (FBMC) with different transmission systems such as Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), 64-QPSK and 64-Quadrature Amplitude Modulation. It is estimated that the PAPR reduction can benefit by using clipping technique in FBMC.

Sign in / Sign up

Export Citation Format

Share Document