quadrature-quadrature amplitude-phase-shift keying
BER Performance Simulation of OFDM System with Channel Estimation using M-PSK and M-QAM
... M-ary phase shift keying (M-PSK) and M-ary quadrature amplitude modulation (M-QAM) in comb type (pilots insert in the time domain) pilot based Least Square Error (LSE) channel ...
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SECURITY IN COGNITIVE RADIO NETWORK
... (Quadrature Phase Shift Keying is a DSBCS modulation scheme with digital information for the ...quadriphase Phase Shift Keying, 4-Phase Shift Keying ...
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DESIGN OF A VERIFICATION TECHNIQUE FOR QUADRATURE PHASE SHIFT KEYING USING MODEL SIM SIMULATOR FOR BROADCAST COMMUNICATION RELEVANCE’S
... Digital techniques have replaced analog techniques in present growing world. Modulation is the process of changing the carrier signal. Digital modulation is defined as the processing of digital data transmission from ...
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DESIGN OF SIMULINK MODEL FOR OFDM AND COMPARISON OF FFT- OFDM AND DWT-OFDM.
... To generate a baseband OFDM symbol, a serial digitized data stream is first channel coded and then modulated using phase shift keying (PSK) or quadrature amplitude modulation (QAM). ...
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Online Full Text
... multiplexed-differential quadrature phase shift keying (PDM-DQPSK) optical label switching system with frequency swept coherent detected spectral amplitude code labels in ...spectral ...
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OFDM in Free Space Optical Communication System
... OFDM is a kind of multicarrier transmission in which high data rate streams are split into lower rate streams and then transmitted simultaneously over several narrow-band subcarriers. The subcarriers are themselves ...
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Comparative Study of Bit Error Rate with Channel Estimation in OFDM System for M ary Different Modulation Techniques
... M-ary phase shift keying (M- PSK) and M-ary quadrature amplitude modulation (M-QAM) digital modulation techniques for mapping the signal in OFDM system for bit error rate evaluation ...
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Performance Evaluation of ½ Rate Convolution Coding with Different Modulation Techniques for DS CDMA System over Rician Channel
... Binary phase shift keying (BPSK), Quadrature phase shift keying (QPSK) and Quadrature amplitude modulation (QAM- 16) for direct sequence code division ...
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Trellis Coded Modulation Schemes Using A New Expanded 16-Dimensional Constant Envelope Quadrature-Quadrature Phase Shift Keying Constellation
... and/or phase) systems, during each modulation interval the modulator transmits b coded information bits at a time by using M = 2 b distinct waveforms, one waveform for each of the M-ary possible b-bit sequence ...
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Performance Comparison of Digital Modulation Techniques used in Wireless Communication System
... are amplitude shift keying (ASK), quadrature phase shift keying (QPSK), binary phase shift keying (BPSK), frequency shift Keying (FSK) ...
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Evaluation of SNR for AWGN, Rayleigh and Rician Fading Channels Under DPSK Modulation Scheme with Constant BER
... as Amplitude Shift Keying (ASK), Frequency Shift Keying (FSK), Phase Shift Keying (PSK), Differential Phase shift Keying (DPSK) and ...
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Comparative Study of Digital Modulation Techniques Using MATLAB
... are amplitude shift keying (ASK), quadrature phase shift keying (QPSK), binary phase shift keying (BPSK), frequency shift Keying (FSK) ...
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High dimensionality carrierless amplitude phase modulation technique for radio over fiber system
... include quadrature phase shift keying (QPSK), quadrature amplitude modulation (QAM), and orthogonal frequency division multiplexing (OFDM) with coherent detection and digital ...
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Simulation of Digital Modulation Techniques Using MATLAB
... rapid amplitude change between symbols due to phase discontinuity, which requires infinite ...Binary Phase Shift Keying (BPSK) demonstrates better performance than ASK and ...
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Analytical Evaluation of a Hybrid Chaotic Shift Keying [CS QCSK] in a CDMA System
... Similar to DCSK method, each symbol period of QCSK also has two parts, but the modification is, information- bearing signals holds two bits of information by means of quadrature chaos shift keying ...
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FPGA Implementation of QPSK modulator by using Hardware Co-simulation
... (Quadrature Phase Shift Keying) is one of the modulation schemes used in wireless communication system due to its ability to transmit twice the data rate for a given ...
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A Study on FPGA Based Digital Modulators
... on Phase modulated. Namely, for each symbol, different phase data is sent to ...(Binary Phase Shift Keying), BFSK (Binary Frequency Shift Keying), BASK (Binary ...
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Comparison of Polarization Shift Keying and Amplitude Shift Keying Modulation Techniques in FSO
... Polarization shift keying modulation technique has many advantages such as excellent BER performance and freedom from the alignment of polarization coordinates of the transmitter and the receiver, ...
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Five Methods to Mitigate Rayleigh Fading
... Clarke developed a model for flat fading and found that the amplitude of the received signal in in-phase and quadrature phase are Gaussian distributed with a Doppler s[r] ...
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Decision Feedback Equalization for Filter Bank Multicarrier Systems
... introduces an offset. We refer to this method as staggered modulated multitone (SMT), where the word staggered refers to the time staggering of in-phase and quadrature components in each QAM symbols. The ...
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