scholarly journals Joint Radar-Communication Relying on Spread Spectrum: A Hybrid Chaotic Sequence Design

2020 ◽  
Vol 2020 ◽  
pp. 1-22
Author(s):  
Hao Ma ◽  
Jun Wang ◽  
Xin Sun ◽  
TianWei Hou ◽  
WenXin Jin
Keyword(s):  
Phase Shift ◽  
Spread Spectrum ◽  
Transmission Rate ◽  
Chaotic Sequence ◽  
Phase Shift Keying ◽  
Short Time Fourier Transform ◽  
Shift Keying ◽  
Short Time ◽  
Binary Phase Shift Keying ◽  
Novel Design

This paper investigates a novel design for joint radar-communication (JRC) waveform, which is capable of improving the network’s performance by solving the phase shift mutation of the Chirp-BPSK waveform. We aim for jointly designing chirp waveform and improving Binary Phase Shift Keying (BPSK), as well as the hybrid chaotic spread spectrum code (CSSC). As a benefit, the JRC waveform can be successfully decoded, and the accumulation of phase shift can be suppressed by hybrid CSSC. The detailed deduction on the short-time Fourier transform (STFT) of the JRC waveform is adopted to analyse the complicated AF characters. Our analytical results demonstrate that the proposed JRC signal has superior spectrum performance, ambiguity function (AF), and transmission rate than conventional Chirp and Chirp-BPSK waveform. Numerical results are provided to confirm that (i) the proposed waveform is capable of providing better communication and radar performance; (ii) the performance of AF is not affected by the transmission rate for the proposed waveform.

scholarly journals Reception of differential binary phase shift keying signals with weight processing of sub-symbols in information transmission systems with frequency hopping spread spectrum.

2020 ◽  
Vol 2020 (10) ◽  
Author(s):  
A.A. Paramonov ◽  
◽  
Van Zung Hoang ◽  
Keyword(s):  
Phase Shift ◽  
Spread Spectrum ◽  
Noise Immunity ◽  
Frequency Hopping ◽  
Phase Shift Keying ◽  
Radio Communication ◽  
Frequency Hopping Spread Spectrum ◽  
Shift Keying ◽  
Radio Communication System ◽  
Binary Phase Shift Keying

Signals with frequency hopping spread spectrum (FHSS) have long been widely used in military radio communication systems (RCS) due to their frequency-energy characteristics. In such systems, the most important characteristic is noise immunity, i.e. the ability to ensure reliable transmission and reception of information under the influence of various types of organized intentional and unintentional interference. In this paper, we consider the case when the input of the receiver, in addition to the receiver's own noise, contains deliberate interference, which is considered noise interference. In this case, it is assumed that the interference covers only part of the operating frequencies of the radio communication system. The algorithm of optimal noncoherent signal reception with weight processing for making a decision about the transmitted symbol (bit) is in the focus of the paper. Static radio engineering methods, as well as Monte Carlo simulation, have been used to evaluate the noise immunity of receiving differential binary phase shift keying signals with FHSS when exposed to deliberate Partial-Band Interference. It is shown that the noise immunity of a radio communication system under conditions of destructive influence can be improved by using the intra-symbols FHSS mode with the proposed reception algorithm. With an increase in the signal-to-interference ratio, the noise immunity of information transmission increases significantly. The optimal strategy for dealing with Partial-Band Interference when the RCS is operating in the intra-symbols FHSS mode is to select the optimal multiplicity of symbol frequency diversity, which minimizes the probability of a bit error probability. The obtained dependencies are presented in order to compare and determine the effectiveness of the considered transmission mode with the proposed reception algorithm.

A BINARY PHASE-SHIFT KEYING RECEIVER FOR THE DETECTION OF ATTENTION TO HUMAN SPEECH

2013 ◽  
Vol 23 (04) ◽  
pp. 1350016 ◽  
Author(s):  
M. A. LOPEZ-GORDO ◽  
F. PELAYO
Keyword(s):  
Phase Shift ◽  
Real Time ◽  
Transmission Rate ◽  
Event Related Potentials ◽  
Phase Shift Keying ◽  
Human Speech ◽  
Binary Phase ◽  
Shift Keying ◽  
Related Potentials ◽  
Binary Phase Shift Keying

Synthetic sounds, tone-beeps, vowels or syllables are typically used in the assessment of attention to auditory stimuli because they evoke a set of well-known event-related potentials, whose characteristics can be statistically contrasted. Such approach rules out the use of stimuli with non-predictable response, such as human speech. In this study we present a procedure based on the robust binary phase-shift keying (BPSK) receiver that permits the real-time detection of selective attention to human speeches in dichotic listening tasks. The goal was achieved by tagging the speeches with two barely-audible tags whose joined EEG response constitutes a reliable BPSK constellation, which can be detected by means of a BPSK receiver. The results confirmed the expected generation of the BPSK constellation by the human auditory system. Also, the bit-error rate and the information transmission rate achieved in the detection of attention fairly followed the expected curves and equations of the standard BPSK receiver. Actually, it was possible to detect attention as well as the estimation a priori of its accuracy based on the signal-to-noise ratio of the BPSK signals. This procedure, which permits the detection of the attention to human speeches, can be of interest for new potential applications, such as brain–computer interfaces, clinical assessment of the attention in real time or for entertainment.

scholarly journals Simulasi Direct Sequence Spread Spectrum (DSSS) Pada Modulasi Binary Phase Shift Keying (BPSK)

Spektral ◽  
2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Nabila Khansa Hartono ◽  
Faradila Alvina Putri ◽  
Fitri Elvira Ananda
Keyword(s):  
Phase Shift ◽  
Spread Spectrum ◽  
Theoretical Concept ◽  
Direct Sequence Spread Spectrum ◽  
Direct Sequence ◽  
Phase Shift Keying ◽  
Binary Phase ◽  
Shift Keying ◽  
Binary Phase Shift Keying ◽  
Bpsk Modulation

Spread spectrum is a data transmission technique that spreads out information spectrum energy signals in a frequency band that is much larger than the minimal spectrum. One of the spread spectrum techniques is Direct Sequence Spread Spectrum (DSSS). This research was built the simulation of DSSS on Binary Phase Shift Keying (BPSK) modulation using MATLAB software. The simulation results of this DSSS simulation are displaying information wave signals, PN codes, signals that have been added with PN codes, signals modulated with BPSK, modulation signals that have been added with AWGN noise, demodulation signals, DSSS output signals and BER vs SNR graphics on the channel AWGN. The simulator of DSSS on BPKS in this research have been running according to the DSSS signal order flow and theoretical concept.   Keywords: AWGN, BPSK , DSSS, PN Code, PN Sequence

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.

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