direct-sequence spread-spectrum codes
COMPARISON OF JAMMING EXCISION METHODS FOR DIRECT SEQUENCE/SPREAD SPECTRUM (DS/SS) MODULATED SIGNAL
... Verifying and validating processes very important for comparing the system with similar works for the show that system is consistent and acceptable for practical uses. Questionnaires were designed and distributed among ...
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Using chaotic sequence in direct sequence spread spectrum based on code division multiple access (DS CDMA)
... chaotic sequence in ...noise. Codes have an effective role in DS- CDMA system, so M-sequences; gold sequences have been used as spreading codes in ...
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Modeling and Simulation of CDMA Codes in Scilab
... Prior to hardware implementation, simulation is an important step in the study of systems such as Direct Sequence Code Division Multiple Access (DS-CDMA). A useful technique is presented, al- lowing to ...
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Analysis of Simulation Parameters of Pulse Shaping FIR Filter for WCDMA
... IMT-2000 direct spread ...distinct codes rather than by orthogonal frequency bands, as in frequency-division multiple ...a Direct Sequence Spread Spectrum (DSSS) signal ...
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Detection of direct sequence spread spectrum signals
... include direct sequence spread spectrum (DSSS) signaling, where codes are used to communicate secretly ...The codes are used to spread the transmitted signal over a wide ...
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COMPARISON OF JAMMING EXCISION METHODS FOR DIRECT SEQUENCE/SPREAD SPECTRUM (DS/SS) MODULATED SIGNAL
... To solve the problem, Leila and Andrzej [6] proposed a method for palm vein recognition using Local Binary Pattern (LBP) and Local Derivative Pattern (LDP). They modifying Gaussian high-pass filter to enhance the ...
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COMPARISON OF JAMMING EXCISION METHODS FOR DIRECT SEQUENCE/SPREAD SPECTRUM (DS/SS) MODULATED SIGNAL
... by the framework and build up a free session key with the system independently. Moreover, it takes aggregate signature in which a group pioneer of MTC gadgets and sends the aggregate signature to the Mobility Management ...
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A Secure Message Exchange and Anti-Jamming Mechanism in MANET
... movability.Direct Sequence Spread Spectrum (DSSS) is a common forms of spread spectrum techniques ...classic spread spectrum techniques, senders and receivers need to ...
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Implementation of Direct Sequence Spread Spectrum Communication System Using FPGA
... is spread in such a way that it become noise like and thus would not interfere with the pay load traffic and interference limited ...random codes, as the applied codes is in principle unknown to a ...
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Direct Sequence Spread Spectrum with Barker Code and QPSK
... Hopping Spread Spectrum (FHSS) and Direct Sequence Spread Spectrum (DSSS) in terms Bit Error Rate (BER) as the performance parameter for the ...different sequence ...
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Loading characteristics of Gold codes in a spread spectrum system
... Recently, a relatively new technique called interleave division multiple access (IDMA) was proposed in literature [1-4] as an alternative to CDMA. The technique (IDMA) has been attracting much attention because it is ...
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Implementing Multiple Security for Audio Steganography
... Steganography [3] works by replacing bits of useless or unused data in regular computer files such as graphics, sound, text, HTML, or even video with bits of different, invisible information. This hidden information can ...
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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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BER Calculation for CDMA System Using PN & Gold Sequence
... distribution spectrum there are so many kinds of channels, here in the analysis of system I have used AWGN channel which introduce noise on the basis of channel ...
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Comparative Simulation & Analysis of 2- PSK Spreading Transceiver
... as spread-spectrum ...with spread spectrum makes this technology suitable for un-licensed band ...The spread spectrum transmitter first perform the BPSK symbol mapping using ...
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Effectiveness of Multimedia Learing on achievement in Biology
... modified Direct Sequence Spread spectrum) and cryptography (using advanced random permutation with multiple key applications) has been proposed in this ...
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COMPARISON OF JAMMING EXCISION METHODS FOR DIRECT SEQUENCE/SPREAD SPECTRUM (DS/SS) MODULATED SIGNAL
... The PID controller is design using Ziegler Nichols method and tuned for obtaining the best controller gains, the LQR controller utilizes four different controller gains to control the fl[r] ...
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COMPARISON OF JAMMING EXCISION METHODS FOR DIRECT SEQUENCE/SPREAD SPECTRUM (DS/SS) MODULATED SIGNAL
... Finally, to improve the gene encode/decode latency, a Gene-based decoding using uniform crossover was performed through Hash Spatial Vector-based Template Authentic Key Generation algori[r] ...
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COMPARISON OF JAMMING EXCISION METHODS FOR DIRECT SEQUENCE/SPREAD SPECTRUM (DS/SS) MODULATED SIGNAL
... Keywords: Wireless Local Area Networks WLAN, Intrusion Detection System IDS, Network topology, Ad-hoc Network, Network attack 1... Although Intrusion detection has been extensively studi[r] ...
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COMPARISON OF JAMMING EXCISION METHODS FOR DIRECT SEQUENCE/SPREAD SPECTRUM (DS/SS) MODULATED SIGNAL
... Secondly, among several combinations of missing value techniques with attribute subset selection methods, we found that the combination of replacement with mean as a missing value replac[r] ...
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