orthogonal frequency-shift keying
DPSK OFDM System for Reliable Data Transmission using QRcode System in Mobile Devices
... approach, orthogonal frequency-division multiplexing (OFDM) modulation is used together by all of differential phase shift keying (DPSK) over adjacent frequency domain ...
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Orthogonal frequency division multiplexing with amplitude shift keying subcarrier modulation as a reliable and efficient transmission scheme for self-mixing receivers
... termediate frequency (IF), two local oscillators (LOs) for RF and IF, two analog-to-digital converters (ADCs) for the in- phase and quadrature (IQ) signals and several ...
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PERFORMANCE COMPARISON OF DD-DPSK-OFDM AND CO-DPSK-OFDM IN ISOWC SYSTEMS
... phase shift keying based orthogonal frequency division multiplexing is investigated in this work at different distances, pointing errors in terms of signal to noise ratio, Q factor and ...
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Analytical Evaluation of a Hybrid Chaotic Shift Keying [CS QCSK] in a CDMA System
... DCSK systems using a standard correlation detector was discussed in [5]. Quadrature CSK (QCSK) is a multilevel version of DCSK, based on the generation of an orthogonal chaotic functions. It allows an increase in ...
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Optical Orthogonal Frequency Division Multiplexing Using Interval Shift Key Subcarriers
... Interval shift key is a combination of pulse modulation and shift keying. The ISK frame based on the pulse interval modulation frame (PIM) except pulse that the part represented with a Quadrature ...
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High dimensionality carrierless amplitude phase modulation technique for radio over fiber system
... phase shift keying (QPSK), quadrature amplitude modulation (QAM), and orthogonal frequency division multiplexing (OFDM) with coherent detection and digital signaling processing (DSP) algorithm ...
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On Off Frequency Shift Keying for Wideband Fading Channels
... joint frequency and phase mod- ulation to improve the power e ffi ciency of communication with OOFSK ...and frequency modulation techniques has been proposed in the literature (see, ...
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OFDM in Free Space Optical Communication System
... phase shift keying (PSK) or quadrature amplitude modulation (QAM) and are then carried on a high frequency ...is orthogonal to the other subcarriers and can be separated at the receiver by ...
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Non Linearity Analysis of High Power Amplifier in OFDM system
... (Orthogonal Frequency Division Multiplexing), PAPR (Peak to Average Power Ratio), HPA (High Power Amplifier), SSPA (Solid State Power Amplifier), PSK (Phase Shift Keying), QAM (Quadrature ...
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Conjectural Contriving of Orthogonal Frequency Division Multiplexing (OFDM) Transreceiver with the Aid of Phase Shift Keying (PSK) and a 256 bit Grayscale Image
... Phase-shift keying (PSK) is a digital modulation scheme that conveys data by changing, or modulating, the phase of a reference signal (the carrier ...
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Bit Error Rate Performance of OFDM/OQPSK and CPM with Channel Coding Over AWGN Channel
... of Orthogonal Frequency Division Multiplexing/Offset Quadrature Phase Shift Keying (OFDM/OQPSK) and Continuous Phase Modulation (CPM) over Additive White Gaussian Noise (AWGN) channel is ...
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FPGA Architecture for OFDM Software Defined Radio with an optimized Direct Digital Frequency Synthesizer
... using Orthogonal Frequency Division Multiplexing ...algorithms, Orthogonal Frequency Division Multiplexing (OFDM), Quadrature Phase Shift Keying (QPSK), Fast Fourier Transform ...
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Higher Data Transmission by Using Barcode Modulation by Dpsk-Ofdm
... A huge part of the attempts in cross section scanner tag progression have been dedicated to standardized distinguishing pieces of proof appeared on a bit of paper as that is the way they are commonly used. With the ...
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Propose and Experimenting Of an Ofdm-Based Differential Modulation Based Communication System
... Chaos-based communication has been significantly studied in recently years because chaotic indicators have the following residences: non-periodic, deterministic, noise like, wideband, and clean to generate. A wide ...
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Status of Resonant Diplexer Development for high-power ECRH Applications
... by frequency-shift keying of the gyrotron (using few kV modulation of the body voltage), and power combination from two gyrotrons was demonstrated ...
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Comparison of bit error rates for binary and differential phase shift keying in a power line communication environment
... This paper emphasizes the derivation of expressions for the bit error rate (BER) when (binary) phase shift keying (PSK) or differen- tial phase shift keying (DPSK) modulation techniques [r] ...
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Diversity Combining for Fast Frequency Hopping Multiple Access Systems Subjected to Nakagami m Fading
... Abstract- The achievable performance of various diversity combining schemes used in fast frequency hopping FFH aided M-ary frequency shift keying MFSK systems operating in a multiple acc[r] ...
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Performance Enhancement of DS-CDMA System using Extended BPSK Modulation Scheme
... There exists a very small difference in the bit “0” & “1” waveforms [11] which makes its detection difficult. An AWGN environment is assumed so as to use a simple amplitude detector for separation of the symbols “0” ...
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DESIGN OF A VERIFICATION TECHNIQUE FOR QUADRATURE PHASE SHIFT KEYING USING MODEL SIM SIMULATOR FOR BROADCAST COMMUNICATION RELEVANCE’S
... phase shift keying (QPSK). QPSK also one type of phase shift keying which is under the digital ...time. Shift keying techniques defines as the carrier bit stream changes in one ...
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MODULATION AND DETECTION TECHNIQUES FOR DWDM SYSTEMS*
... phase-shift keying with interferometric detection, (c) phase-shift keying with coherent detection, and (d) quadrature- amplitude modulation with coherent ...
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