FFT-based OFDM signal
Performance Analysis of Adaptive MIMO Based OFDM using FFT and DWT
... (DWT) based Multiple Input Multiple output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) system using adaptive modulation and compare with DWT based MIMO OFDM system and Fast ...
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Performance Analysis of OFDM System under FFT, DWT and DCT Based Transform Techniques
... The signal is handed down through a number of high pass filters to evaluate the high frequencies, and then passed through a number of low pass filters to evaluate the low ...the signal at different ...
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Performance Comparison of FFT, Discrete Wavelet Packet Transform (DWPT) for MIMO-OFDM Systems
... determined signal is allowed variation in each time and frequency by multiresolution in line with the performed shifting and ...the signal, the DWPT uses a varied-sized ...the signal to be known as ...
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DESIGN OF SIMULINK MODEL FOR OFDM AND COMPARISON OF FFT- OFDM AND DWT-OFDM.
... complex signal processing ...developed OFDM system for both DWT and FFT based ...DWT-IDWT based OFDM transmitter and receiver that achieve better performance in terms Bit Error ...
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Review on FPGA based OFDM System Implementation using FFT
... Orthogonal Frequency Division Multiplexing (OFDM) is a master modulation method in this new period of communication world. In a conventional parallel data system, the total signal bandwidth can be divided ...
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Comprehensive Study on DWT-OFDM and FFT-OFDM using 64-DAPSK Modulation Technique
... (DWT) based OFDM with DFT based system with differential amplitude phase shift keying (DAPSK) as its modulation scheme is ...DWT based OFDM systems are superior to a DFT based ...
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FFT Factorization Technique for OFDM System
... To increase bandwidth efficiency various schemes has been proposed in literature. Bing Han et al. proposed DFT based bandwidth efficient method for ICI cancellation [8].In this scheme at the transmitter side, ...
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Comparative Study on DWT-OFDM and FFT-OFDM Simulation Using Matlab Simulink
... on FFT/DWT based systems, thus the signals which are to be transmitted are converted from serial to parallel and they are processed by using QAM modulators and they are sent through the IFFT/IDWT block to ...
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VLSI Design of a Variable Length FFT/IFFT Processor for OFDM Based Communication Systems
... The FFT/IFFT processor is designed to perform various lengths of FFT/IFFT ...case. Based on the specification of OFDM system, the 8192- point FFT will su ff er the largest quantization ...
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FPGA Implementation of OFDM Transceiver using FFT Algorithm
... of OFDM have been in existence for several ...to OFDM multicarrier transmissions. OFDM systems perform better than single carrier systems particularly in frequency selective ...2]. FFT (Fast ...
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A Novel OFDM using Radix 22 and FFT Algorithm
... the FFT processor is necessary to ensure enhanced computational efficiency and improved ...regular Signal Flow Graph ...calculations based on 16 Sutras .All the Vedic formulae areclaimed to be ...
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A Modified FFT Algorithm using Pruning Technology Based on OFDM Wireless Communication System
... an OFDM scheme, a large number of orthogonal, overlapping, narrow band sub-carriers are transmitted in ...An OFDM signal consists of a number of closely spaced modulated ...whole signal to be ...
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FPGA based Reconfigurable Radix 4 and Radix 22 FFT Architecture for WiMAX
... with FFT algorithm even tough the spectrum is overlapped because IFFT is a linear ...the signal is not corrupted. Fig 15 and 16 is the OFDM modulation and demodulation ...in OFDM can be ...
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A novel DWT based Audio Watermarking adopting Fibonacci Numbers
... Decibels are represented in a graduated table, where, every 6 dB increase represents a doubling of intensity in the audio. The perceived loudness of a sound is expounded to its intensity. Normally, we tend to hear sounds ...
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Audio Signals and Spectra
... the signal in pseudo-real time, in the same manner as an oscilloscope (the refresh rate determines how close to real-time the display ...the signal by examining its digitized content with a digital ...
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Design, Modelling and Implementation of Variable FFT Processor
... Variable FFT Processor. FAST Fourier transform (FFT) is a main block in orthogonal frequency division multiplexing (OFDM) and Orthogonal Frequency-Division Multiple Access (OFDMA) ...systems. ...
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Computational Performances of OFDM Using Different FFT Algorithms
... ABSTRACT In this paper, an intuitive comparison of the computational performance of orthogonal frequency division multiplexing OFDM system has been made in terms of complex calculations [r] ...
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Factor graph based detection approach for high mobility OFDM systems with large FFT modes
... conventional OFDM receivers, it is assumed that the channel remains static in an OFDM symbol ...an OFDM block, the subcarriers are not longer orthog- onal and the system performance drops down ...of ...
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PAPR Reduction in OFDM System Using Hybridization Techniques
... PAPR (Peak-to-Average Power Ratio) is the one of the challenging issue in the multi carrier systems i.e. OFDM systems. PAPR should be reduced so that Performance of these systems can increase. In comparison with ...
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EVALUATION OF BER PERFORMANCE OF FFT-OFDM FOR WIRELESS COMMUNICATION NETWORKS
... since OFDM takes one-word carrier and spreads it over several smaller carriers, so even if you have one fading in one specific frequency the station still has other useful channels, which can still convey the ...
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