PN spread spectrum modulation
New PN Even Balanced Sequences for Spread Spectrum Systems
... BPSK modulation, spreading is achieved by multiplying or modulating a low symbol (bit) rate binary information sequence with a pseudonoise (PN) signal generated by means of a shift register running at a ...
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7. Matlab Simulation for Generation and Performance Analysis of Gold Codes in CDMA
... immunity.Spread spectrum technique may be a digital pass band ...bySS modulation and demodulation ...depicts PN codes for the development of gold codes with ...
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Performance Evaluation of DSSS and FHSS Using Modulation Technique
... Spread spectrum techniques are very useful to overcome the communication problems like interference and ...the PN code called spreading code ...called spread signal which is then ...
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BER Calculation for CDMA System Using PN & Gold Sequence
... of modulation index on bit error rate has been plotted for different modulation ...schemes. Spread Spectrum is a method of transmission in which the data sequence occupies a bandwidth in ...
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Modeling and Simulation of CDMA Codes in Scilab
... Xcos. PN-Generators are designed for the quadrature-phase modulation and the Gold Code Generator for Global Positioning System ...by spread spectrum ...
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Comparative Analysis of Various Digital Modulation Techniques for FHSS WCDMA over AWGN and Fading Channels
... on spread spectrum technique which spreads the data using a ...a PN sequence code or a Walsh ...discarded. Spread spectrum signals are highly resistant to interference and are very ...
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Spread Spectrum Sensing Techniques for Transformer Frequency Response Data
... is spread at base-band and then modulated by a carrier signal ...the modulation process is separated from the spreading ...signal, PN sequence, modulation and transmission ...
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Comprehensive Review on PN Sequence and their...
... Suzi Seroja Sarnin et. al. [2010] highlights in the paper ” Performance Study of BPSK and 8-PSK Using Cyclic Codes in CDMA Environment” the performance of BPSK and 8-PSK in Code Division Multiple Access (CDMA) ...
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SECURED COMMUNICATION USING SPREAD SPECTRUM TECHNIQUES
... HOPPING SPREAD SPECTRUM: FH is the type of SS in which the carrier hops randomly form one frequency to ...common modulation format for FH system is of M-ary frequency shift keying ...of PN ...
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A Comparison of Steganography in the GIF Image using LSB and Spread Spectrum Method
... the spread spectrum ...of spread spectrum in the same ...with spread spectrum method is in terms of the image will be inserted when processing the ...a spread ...
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Contemporary Spread Spectrum Techniques: A Comparative Study Ashish G. Nandre 1, Yogesh R. Risodkar2
... In uncoordinated FH-DSSS the spreading code and the carrier frequency is selected randomly from the predefined set for message transmission. First the spreading process takes place on signal and then it is fed to ...
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Novel Attacks on Spread-Spectrum Fingerprinting
... Gaussian, spread-spectrum fingerprinting, where each user is identified by a random, Gaussian signal which is added to the copyrighted file (host ...
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A joint adaptive MMSE downlink receiver
... Channelisation codes 1 to 3 are applied to spread the spectrum of tbe data The spread spectrum signal is organised in data bursts of type 1 and transmitted through a baseband equivalent [r] ...
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Detection of direct sequence spread spectrum signals
... Due to the ubiquitous use of wireless communication devices, techniques to efficiently use and manage system resources, such as the available radio frequency (RF) spectrum, have been developed and are implemented ...
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Variable Frequency Modulation for EMI Suppressing in Power Converter
... As can be seen from equation 7, chaotic spread spectrum control PWM pulse spectrum has the continuity characteristic, the power spectrum of chaotic spreading spectrum drive pulse is no l[r] ...
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VHDL IMPLEMENTATION OF DS SS-CDMA TRANSMITTER AND RECEIVER FOR AD HOC NETWORK
... available spectrum into multiple time slots, by giving each user a time slot in which they can transmit or receive TDMA systems Transmit data in a buffer and burst method, thus the transmission of each channel is ...
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Simulation of High Data Rate Transmission over Optical Cable Channels Using OFDM/OQAM Modulation
... serial-to-parallel (S/P) converted into N subcarriers and then passed to N subcarrier transmission filters. The quadrature-phase component is delayed by T = 2 with respect to the in-phase where T is the symbol period, ...
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Super Magic of Some Connected Graphs Pn * 2nP2 , Pn * 2nP3, Pn * 2nP4, and Pn * 2nP5
... a graph. If G has a vertex magic total labeling then it has a modular super vertex magic labelling. But converse need not be true;(2) Km,m has no modular super vertex magic total labeling; (3) IfG is a star graph with ...
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Secure Spread Spectrum Watermarking for Telemedicine Applications
... secure spread-spectrum based watermarking algorithm for embedding sensitive medical information like physician’s signature/identify- cation code or patient identity code into radiological im- age for ...
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Spread Spectrum Based Digital Audio Watermarking
... using spread energy per critical ...points, PN sequence is generated which used to modulate the FFT watermark ...the PN sequence is applied and output of this is the required extracted ...
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