Frequency-hopping spread spectrum
Performance Improvement of Wireless Communications Using Frequency Hopping Spread Spectrum
... Frequency hopping spread spectrum is a transmission technology used in wireless networks and a technique to generate spread spectrum by hopping the carrier fre- quency ...
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Frequency Hopping Spread Spectrum Security Improvement with Encrypted Spreading Codes in a Partial Band Noise Jamming Environment
... narrowband spectrum techniques. Signals of spread spectrum are in- distinguishable from background noise to anyone who does not know the coding ...of spread spectrum is its relatively ...
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A Review on Frequency Hopping Spread Spectrum Based Anti Jamming Improvement With Encrypted Spreading Codes
... on Frequency hopping spread spectrum anti-jamming improvement with Encrypted spreading ...on frequency hopping spread spectrum modulation ...
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Low Complexity Erasure Insertion in Frequency Hopping Spread Spectrum Communications Subjected to Fading and Partial Band Interference
... Slow Frequency-Hopping Spread-Spectrum (SFH/SS) wireless sys- tems Forward Error-Correction (FEC) codes, such as for example Reed-Solomon (RS) codes are often used, in order to mitigate the ...
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Comparative Analysis of Various Digital Modulation Techniques for FHSS WCDMA over AWGN and Fading Channels
... The random number generator will generate random numbers. These random numbers are the inputs to the convolution encoder. The convolutional encoder is a type error correcting code. Convolutional codes are characterized ...
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FHSS, DSSS, And Hybrid DS/FH Performance Evaluation For VSAT
... as: Frequency Hopping Spread Spectrum (FHSS) where the signal is broadcast over a seemingly random series of radio frequencies, hopping from frequency to frequency at ...
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Efficient Transmission of Information using Transmission Code along FHSS
... the spread spectrum, need of spread spectrum, importance, applications, its common techniques and the proposed ...the frequency hopping spread spectrum FHSS ...
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Robust Blind Frequency and Transition Time Estimation for Frequency Hopping Systems
... Frequency hopping spread spectrum (FHSS) techniques are widely used in military communications for combating narrowband interference and for security ...estimating frequency and timing ...
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SECURED COMMUNICATION USING SPREAD SPECTRUM TECHNIQUES
... Spread Spectrum communication system holds a promising future for heightened secured ...a spread spectrum ...band spread is accomplished by utilising a code which is independent of data ...
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Simulation of Analog Phase-locked Loop for Frequency Hopping Application
... The frequency hopping spread spectrum (FHSS) technique has become a subject of interest, as it has been applied in many ...carrier frequency rapidly and a PLL based system is required ...
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DEVELOPMENT OF A DIGITALLY TUNED QUADRATURE OSCILLATOR
... the frequency of oscillations digitally having good linearity with digital control ...the frequency of oscillations for oscillator circuit can be achieved which is controlled by a digital control word ...
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Spread Spectrum Sensing Techniques for Transformer Frequency Response Data
... channels, spread spectrum is proposed in the literature [3]. Spread spectrum can be defined as a modulation technique in which pseudo-random sequence is used in expanding the actual bandwidth ...
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The Probability of Multiple Correct Packet Reception in Coded Synchronous Frequency Hopped Spread Spectrum Networks
... and frequency- hopped signaling, employing the singly extended RS code, where each symbol in the codeword can assume a value from the alphabet of size ...a frequency deter- mined by the random ...
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ANTI-JAMMING BROADCAST COMMUNICATION USING UNCOORDINATED FREQUENCY HOPPING
... uncoordinated frequency hopping to counteract the jamming attack without using any shared ...large frequency range effectively eliminates jamming ...sequence spread spectrum, in which ...
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Contemporary Spread Spectrum Techniques: A Comparative Study Ashish G. Nandre 1, Yogesh R. Risodkar2
... Spread spectrum techniques use data independent, random sequences to spread a narrow band information signal over wideband of ...entire frequency band; the receiver can correlate the received ...
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Structural and Conductivity studies of BFN ST40 Nanoceramics Processed by Ball milling
... Table-1 indicates that the conductivity of the BFN-ST40 nanoceramics sample increases with increase in temperature. As applicable in various materials, Jump relaxation model (JRM) can account for this conductivity ...
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The Design and Implementation of Scrambling Wavelength Hopping with AWG Router and Optical Switch over Secure WDM Network
... length hopping configuration was imple mented over wavelength division mu ltip le xing (W DM) ...wavelength hopping pattern of proposed scheme, the transceiver oscillators were used to trigger the optical ...
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A Comparison of Steganography in the GIF Image using LSB and Spread Spectrum Method
... Analysis: From the results of previous experiments against gif image about how much the message maximum number of characters that can be inserted by the method of Least Significant Bit (LSB) and also the spread ...
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Modeling and Simulation of CDMA Codes in Scilab
... 9600 = , the clock connected to the PN is set to be 128 times faster than the clock connected to the shift register containing the information bits. This is a typical modeling of DSSS, each information bit is en- coded ...
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Improved Performance Evaluation of Frequency Hopped spread spectrum using QAM/FSK Modulation Techniques
... The spread spectrum process as evident is an effective way of transmission with lesser bit error ratio and the FEC employed as a Convolution/Viterbi coding is also productive in obtaining a lowered BER of ...
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