QPSK-OFDM-QAM signal
BER Comparison of SC-FDMA and OFDM System Using Different Modulation Techniques
... in OFDM system, and severely degrades its BER ...of OFDM system over Nakagami–m fading channels, using well known characteristics function based analysis ...for OFDM with 16-QAM with varying ...
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Performance of IEEE 802.16e MIMO-OFDM System with Alamouti Scheme.
... BPSK, QPSK, 8-QAM and 16-QAM with mobile wireless channel AWGN used and the results shows under the bit error rate versus signal to noise ratio ...
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A Multiresolution Channel Decomposition for H 264/AVC Unequal Error Protection
... the signal is coded us- ing a recomposition ...resulting OFDM symbol. The OFDM sequences are then processed in a serial fashion for ...(i.e. QPSK base layer symbols car- rying high profile ...
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Channel estimation of OFDM Systems by using the Wavelet Decomposition method with different Transforms Techniques
... unnoticed. QAM is that the technique of mixing 2 amplitude modulated signals into one ...analogy QAM or a digital QAM. Analogy QAM combines 2 amplitude modulated signals victimisation constant ...
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High dimensionality carrierless amplitude phase modulation technique for radio over fiber system
... Recently, higher order modulation formats are broadly studied for long haul optical communication systems. These high order modulation formats include quadrature phase shift keying (QPSK), quadrature amplitude ...
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Performance Investigation of CO-OFDM WDM-RoF Network with different Modulation Techniques and Dispersion Compensation using FBG
... the OFDM modulator can have different modulation formats such as BPSK, QPSK, QAM, ...employing OFDM modulation format with a BER below 10 -3 ...improved OFDM format and optical coherent ...
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Performance Comparison Analysis between Multi FFT OFDM for Power Line Carrier Communication
... The FFFT is a generalization of the ordinary Fourier transform with an order parameter α and is identical to the ordinary Fourier transform when this order α is equal to /2. The FFFT belongs to the class of ...
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Performance Improvement of Wi-MAX System using QAM Modulation and Moving Average Filter
... on OFDM technology and this enables going towards the 4G mobile in the ...BPSK, QPSK and QAM (Both 16 and 64) to find out the best performance of physical layer for WiMAX ...
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OFDM AS AN ACCESS TECHNIQUE FOR NEXT GENERATION NETWORK
... where OFDM has become feasible and economical in the next generation ...using OFDM include DVB (Digital video broadcasting), DAB (Digital audio broadcasting), and HDTV (high - definition ...the OFDM ...
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CLASSICAL CLIPPING: A FUTURE PROSPECTIVE TO REDUCE THE PAPR IN OFDM SYSTEM
... (6) The out-of-band radiations occurred without filtering due to non linearity. To reduce the interference to neighboring channels, out-of-band components must be reduced with a band limiting filter. The peak growth ...
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BER Analysis of Mobile WiMAX System Using STBC Code in MIMO System under AWGN and Other Channels
... IEEE802.16e is a global broadband wireless access standard capable of delivering high data rates to fixed users as well as portable and mobile ones over long distance [1]. In mobile WiMAX air interface adopts Orthogonal ...
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Digital Signal Processing Of Coherent and Generation Detection of QPSK Signal
... There has been a remarkable change in the area of high-speed optical fiber communications in recent years. Traditional binary ON{OFF signalling systems are being replaced with other more sophisticated modulation formats ...
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Title: Performance Analysis of Channel Estimation in MC-CDMA over OFDM in Fading & Non Fading Channel Environment
... of OFDM is derived into many carriers. In OFDM, spectrum is used with more efficacy as the channels are much ...closer. OFDM is a broadband multicarrier modulation method that offers superior ...
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Analysis of PAPR in Precoded OFDM Systems for M - QAM
... Precoded OFDM Systems for M-QAM (where M=16, 32, 64, ...precoded OFDM system, Walsh Hadamard Transform(WHT) precoded OFDM system, Selected Mapping(SLM), Discrete Fourier (DFT) precoded ...
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FPGA based Reconfigurable Radix 4 and Radix 22 FFT Architecture for WiMAX
... The butterfly output Z1(n) ) is sent to apply the twiddle factor, and Z1(n + N/2) is sent back to the shift registers to be “multiplied” in still next N/2 cycles when the first half of the next frame of time sequence is ...
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Comparison of LMS and FDAF Algorithms in Equalization of Fading Channel
... In this paper, 16-QAM and QPSK modulation schemes are used to find scattered diagram and BER for the cases of with and without equalization. Here, the above mentioned two algorithms are compared considering ...
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PERFORMANCE EVALUATION OF OFDM TRANSCEIVER FOR BPSK & QAM MODULATION TECHNIQUES
... The telecommunication industries insisted on new technology with high transmission abilities standardized by IEEE 802.16 also referred as WiMAX .It has two patterns fixed(802.16d-2004) and mobile(802.16d-2005) which are ...
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Design and Implementation of 4 - QAM VLSI Architecture for OFDM Communication
... - QAM (Quadrature Amplitude Modulation) is preferred for OFDM (Orthogonal Frequency Division Multiplexing) based wireless communication ...of QAM is to provide both phase and amplitude modulation. ...
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Simulation of 16 QAM OFDM Modulator Using MATLAB
... I/Q diagrams are particularly useful because they mirror the way most digital communications signals are created using an I/Q modulator. In the transmitter, I and Q signals are mixed with the same local oscillator (LO). ...
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A Hybrid Papr Reduction Technique For Mimo OFDM System With Qpsk
... ABSTACT:- This work present hybrid Peak to average power ratio mitigation technique based on PTS and modified clipping technique in MIMO-OFDM system. Firstly we applied signal to PTS and then we applied ...
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