digital on-off keying
SECURITY IN COGNITIVE RADIO NETWORK
... Shift Keying is a DSBCS modulation scheme with digital information for the ...of digital information a time (without the use of another carrier ...Shift Keying, 4-Phase Shift Keying or ...
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DESIGN OF QPSK MODULATOR FOR WI-FI AND DSP APPLICATIONS
... In digital method, varying in the phase of the carrier is described as Phase Shift ...The digital modulators are involved to produce these waves supported on the method we ...
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A Review of Digital Modulation formats and OF...
... upon digital modulation provides greater information capacity, compatibility with multiple digital data services, and also provides higher data security, better quality ...the digital modulation ...
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Detection, Receivers, and Performance of CPFSK and CPCK
... and Pasupathy considered a class of CPM referred to as Continuous Phase Chirp (CPC) binary signals [33] and showed that an advantage of 1.66 dB at most can be achieved over conventional PSK. Raveendra extended this work ...
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Comparison of Polarization Shift Keying and Amplitude Shift Keying Modulation Techniques in FSO
... common digital modulation techniques [2] are Amplitude Shift Keying (ASK), Frequency Shift Keying (FSK), Phase Shift Keying (PSK) and Differential Phase Shift Keying ...shift ...
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Performance Enhancement of Data Communication through Visible Light Communication Using On Off Keying
... Abstract— Visible Light Communication (VLC) refers to short-range optical wireless communication using visible light spectrum from 380 to 780nm and it has many advantages such as it can offer speeds up to 10GB/S. The ...
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A Study on FPGA Based Digital Modulators
... different digital modulation techniques based on FPGA and their Bit Rate ...Error. Digital modulation represents the transfer of the digital bit stream from the transmitter to the receiver via the ...
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On Off Frequency Shift Keying for Wideband Fading Channels
... of digital communication systems in wireless, deep space, and sensor networks operate in the low-power regime where power consumption rather than bandwidth is the limiting ...
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Design of Digital Baseband Subsystem for S-Band Transponder
... A digital modulation system is more reliable than analog ...Shift Keying) modulation and demodulation using Xilinx ISE software in digital baseband ...Shift Keying (BPSK) modulation is widely ...
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Design of Visible Light Communication Receiver for On Off Keying Modulation by Adaptive Minimum Voltage Cancelation
... Essentially, the interference from ambient lights is of additive nature to the modulated information, and all the received optical signals are superimposed together. Hence once the interference level is known at the ...
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DESIGN OF A VERIFICATION TECHNIQUE FOR QUADRATURE PHASE SHIFT KEYING USING MODEL SIM SIMULATOR FOR BROADCAST COMMUNICATION RELEVANCE’S
... shift keying (QPSK). QPSK also one type of phase shift keying which is under the digital ...The digital modulation is more efficient in transmission and more secure compared to ...in ...
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Implementation of Shortened Pulse Position Modulation for Optical Communication Systems
... In the Fig. 2, the proposed SPPM scheme is given for the design of digital circuit. In the first step, msb bit is excluded from data bits. As shown in the figure, the all data consists of n bits. The n-1 bits are ...
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Design and analysis of different types of PSK modems on FPGA for SDR
... modems. Digital Processing is a key technology for the software defined radio hardware ...technology. Digital Frequency synthesizer (DFS) is used in communication system to generate a sinusoidal ...
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Polymer colour converter with very high modulation bandwidth for visible light communications
... In order to test the communication capability of the BBEHBO–PPV, a free space link of 15 cm was created and the polymer excited by an intensity modulated, blue laser diode. As with measuring the case of the frequency ...
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A comprehensive survey of recent advancements in molecular communication
... MC channels typically have memory since some of the information particles that are released may remain in the channel and arrive in future time slots. Therefore, another important problem in MC is the ISI due to delayed ...
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An integrated nonlinear optical loop mirror in silicon photonics for all-optical signal processing
... an off-chip optical circulator) is ∼ 24 dB (this loss accounts for the 15 dB loss from the VGCs, the losses from the couplers used to combine the pump with the probe in the loop, and waveguide propagation ...
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Digital switchover in Europe
... the digital television market from ...period digital cable saw a decline from ...and digital satellite showed a drop from ...numbers, digital satellite remained the market leader in 2005 ...
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Positioning and space-division multiple access enabled by structured illumination with light-emitting diodes
... The individual pixels in these devices respond with a full on- off modulation bandwidth of up to 110 MHz [24]. The pattern update rate is 2 kfps limited by a serial data link in the current electronic ...
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Polymer colour converter with very high modulation bandwidth for visible light communications
... this limit, as they have a shorter emission lifetime (in the order of nanoseconds), and consequently higher communication bandwidths can be obtained. 6–8 Semiconducting polymers are low cost, solution-processable ...
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Quenching Oscillator Modeling for OOK Super-Regenerative Transmitter
... many applications of short-range, low-power wireless systems due to its simple implementation and improved performance for a given power budget. This paper presents the modeling of a quenching oscillator used for data ...
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