M-ary quadrature amplitude modulation
Simulation of High Data Rate Transmission over Optical Cable Channels Using OFDM/OQAM Modulation
... orthogonally. M-ary modulation schemes are preferred because in these schemes more than one bit can be grouped & transmit at a time which is very effective for band limited ...
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BER Performance Simulation of OFDM System with Channel Estimation using M-PSK and M-QAM
... the M-ary phase shift keying (M-PSK) and M-ary quadrature amplitude modulation (M-QAM) digital modulation techniques for mapping the signal in OFDM ...
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Comparative performance evaluation of M ary QAM modulation schemes using Simulink and BERTool
... Different modulation techniques allow researchers to send different bits per symbol achieving different and higher throughputs or ...bandwidth, M-ary Quadrature Amplitude ...
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Comparative Study of Bit Error Rate with Channel Estimation in OFDM System for M ary Different Modulation Techniques
... the M-ary phase shift keying (M- PSK) and M-ary quadrature amplitude modulation (M-QAM) digital modulation techniques for mapping the signal in OFDM ...
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DIFFERENT SPREADING SEQUENCES FOR PERFORMANCE COMPARISON OF DS-SS SYSTEM B Ch Kiran Patrudu*, D.Anil Prasad, B Ravi Kumar
... and M-ary PSK we transmit, in any symbol interval, one signal or another which are distinguished from one another in phase but are all of the same ...in amplitude. We call this as amplitude ...
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Quadrature Amplitude Modulation All Optical Orthogonal Frequency Division Multiplexing-dense Wavelength Division Multiplexing-optical Wireless Communication System under Different Weather Conditions
... AO-OFDM modulation module, DWDM multiplex module, electrical to optical conversion module and OWC channel, while the receiver side is composed of AO-OFDM demodulation , DE-DWDM optical de- multiplexer, and optical ...
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OFDM in Free Space Optical Communication System
... ABSTRACT: The hybrid technology that combines the OFDM and FSO is helps to improve the overall performance of the communication system. FSO is the free space optical communication system where that transmit the data in ...
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Effective PAPR reduction in mimo ofdm using combined SFBC PTS
... Multi-Carrier Modulation is a data transmission technique which divides a high-bit rate data stream into several parallel low bit-rate data streams modulating several ...
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Differential Space-Time Coding Scheme Using Star Quadrature Amplitude Modulation Method
... PSK modulation due to the decrease of minimum pro- duce distance in high spectrum e ffi ...ferential modulation due to the application of cyclic group ...
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QAM-DWT-SVD Based Watermarking Scheme for Medical Images
... This paper presents a new semi-blind image watermarking system for medical applications. The new scheme utilizes Singular Value Decomposition (SVD) and Discrete Wavelet Transform (DWT) to embed a textual data into ...
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Design and Implementation of 4 - QAM VLSI Architecture for OFDM Communication
... in amplitude by a multilevel signal which through a multilevel binary converter generates the levels often ‘a’ and ‘b’ according to the number of binary ...
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Performance Comparison of Digital Modulation Techniques used in Wireless Communication System
... of modulation systems from analog to digital has further complicated the ...Digital modulation schemes provide more information carrying capacity, better quality communication, data security and RF spectrum ...
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Reed-Solomon Code Performance for M -ary Modulation over AWGN Channel
... for M-ary modulation in a communication noisy channel (AWGN). M-ary Frequency Shift Keying (M-FSK) modulation technique is used for simulation and ...
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Performance Analysis Of OFDM Models For Mr Channel Using Gi And Cp Technique
... Multi-Carrier Modulation (MCM) is one of the process used for data transmission in mobile communication and which process is Transmitting data by dividing the main stream into multiple bit ...
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Performance of OFDM based FSO Communication Systems using M ary PSK Modulation
... popular modulation/ multiplexing technique for broadband wireless communication which is robust to multipath fading and frequency selective fading ...a modulation technique for IEEE ...
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Comparative Study of Digital Modulation Techniques Using MATLAB
... digital modulation techniques used in wireless communication ...digital modulation techniques have been discussed in this ...comparative modulation techniques i.e. Amplitude shift ...
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Performance of OFDM system for AWGN, Rayleigh and Rician Channel
... Fig. 2 represented block diagram of an OFDM system. The bit sequence is enter in modulation block and this sequence is mapped by using QAM modulator and output of this block is complex symbol. This symbol in ...
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Adaptive minimum symbol error rate beamforming assisted receiver for quadrature amplitude modulation systems
... The modulation scheme was 16-QAM. Fig. 3 compares the SER performance of the MSER solution to that of the MMSE solution under three different conditions: (a) the minimum spatial separation between the desired user ...
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Evaluation of SNR for AWGN, Rayleigh and Rician Fading Channels Under DPSK Modulation Scheme with Constant BER
... phase modulation conveys data by changing the phase of carrier ...a modulation technique that codes information by using the phase difference between two neighboring ...Differential modulation is ...
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Design And Development Of Software Defined Radio
... This project is to design and develop a Software Defined Radio that using implements the coding technique and modulation scheme (Quadrature Amplitude Modulation (QAM) with Orthogonal Frequency ...
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