flat fading
A Blind Hammerstein Diversity Combining Technique for Flat Fading Channels
... In this paper, we proposed a blind diversity combining technique using Hammerstein type filters. To show the performance of our proposed technique, simulations were performed for Rayleigh flat fading ...
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Novel Semi blind Channel Estimation Schemes for Rayleigh Flat Fading MIMO Channels
... A novel algorithm is proposed and studied for QR de- composition-based scheme in the context of semi-blind Multi-Input Multi-Output (MIMO) channel estimation. Specifically, the flat-fading MIMO channel ...
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Performance Analysis of Space Time Block Codes in Flat Fading MIMO Channels with Offsets
... We have performed a mathematical analysis of the behavior of orthogonal space-time codes with imperfect carrier off- set compensation in MIMO channels. We have considered the effect of imperfect carrier offset knowledge ...
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Channel estimation for massive MIMO TDD systems assuming pilot contamination and flat fading
... (flat) fading channel model. Flat fading channels are also known as amplitude varying channels and narrowband channels as the signal’s bandwidth is narrow compared to channel’s bandwidth ...
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Performance analysis of relay selection in cooperative networks over Rayleigh flat fading channels
... versions of the signal and can make better decision on the detection of the transmitted information. In DF, the received noisy message at the relay is decoded first, and then the relay re-encodes the decoded message, and ...
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Capacity of MIMO systems with semicorrelated flat fading
... Extensions of this work to correlated channels have begun to appear rapidly in the literature [8]–[12]. It is now well known that MIMO ca- pacity is very sensitive to the presence of spatial fading correlation [8] ...
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Optimization of Hierarchical Modulation for Use of Scalable Media
... Exact (in M) BER expressions for uniform M-QAM over an additive white Gaussian noise (AWGN) channel have been developed in [17, 18] based on signal-space concepts and a recursive algorithm, respectively. Exact ...
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Performance of the Smart Antenna Aided Generalized Multicarrier DS CDMA Downlink using both Time Domain Spreading and Steered Space Time Spreading
... The receiver front-end is shown in Fig.3. After multicarrier de- modulation, the U V number of parallel streams corresponding to the signals transmitted on the U V subcarriers are space-time de- spread using the approach ...
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Performance Comparison of FFT, Discrete Wavelet Packet Transform (DWPT) for MIMO-OFDM Systems
... In this section, the channel model used is the flat fading channel, where the bandwidth of the transmitted signal is smaller than the coherence bandwidth of the channel. Then, all frequency components of ...
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Performance Estimation of 2*4 MIMO-MC-CDMA Using Convolution Code in Different Modulation Technique using ZF Detection Scheme
... Abstract - In this paper we estimate the performance of 2*4 MIMO-MC-CDMA system using convolution code in MATLAB which highly reduces BER. MC-CDMA (Multi Carrier Code Division for Multiple Access) is a multi-user and ...
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A General Algorithm for Biorthogonal Functions and Performance Analysis of Biorthogonal Scramble Modulation System
... in flat fading channel, the BOSM systems based on general Fourier series analysis, such as Chebyshev polynomial and Legendre polynomial analy- sis, have better BER performance and spectrum effi- ciency than ...
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Global Journal of Advance Engineering Technologies and Sciences ANALYSIS OF IMAGE COMPRESSION USING HAAR AND DB-2 WAVELET WITH MEDIAN FILTER Deepak Prajapat 1, Prof. Mahesh Goud2
... The technological advancements in digital communication and computer technology have paved the way for all pervading World Wide Web based internet. The development and deployment of 4G technology based mobile ...
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A novel Chaotic Collaborative CDMA scheme under Rayleigh fading
... The mathematical model of a 2XM1-CCCDMA scheme is described under Rayleigh flat fading channels and compared to high capacity grouped-CDMA schemes. The proposed scheme demonstrates acceptable BER ...
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Performance comparison of multiuser detectors with channel estimation for flat Rayleigh fading CDMA channels
... The structure of the paper is as follows: Section (II) describes the synchronous CDMA channel and reviews three multiuser detectors. Section (III) contains analytical and simulation results for multiuser detection with ...
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Research on Anti Jamming Performance of GMSK in Shortwave Frequency Hopping
... into flat fading channels and frequency selective fading ...called flat fading. The flat fading channel condition is ...
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Effect of cyclic prefix in BER improvement in MIMO-OFDM system
... Traditional single carrier modulation techniques can achieve only limited data rates due to the restrictions imposed by the multipath effect of wireless channel and the receiver complexity. High data-rate is desirable in ...
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Performance Evaluation of Space Time Block Codes Using Bit Error Rate in MIMO Systems
... Space Time Block codes STBC is a promising way to improve the performance of wireless communication system by maximizing transmit diversity in space as well as time for flat fading chann[r] ...
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On Channel Estimation of OFDM BPSK and QPSK over Generalized Alpha Mu Fading Distribution
... A fading model which is based on the non-linearity present in the propagation medium is utilized here for generation of α-µ ...various fading distributions, one of which is Weibull ...In flat ...
5
TRAINING AND DEVELOPMENT OFARTIFICIAL NEURAL NETWORK MODELS: SINGLE LAYER FEEDFORWARD AND MULTI LAYER FEEDFORWARD NEURAL NETWORK
... This paper proposed anew Space Time Block Coded Orthogonal Frequency-Division Multiplexing (STBC- OFDM) system based on Discrete Framelet transform (FT) instead of Fast Fourier Transform (FFT) under different channel ...
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Eigenstructures of MIMO Fading Channel Correlation Matrices and Optimum Linear Precoding Designs for Maximum Ergodic Capacity
... frequency-selective fading channel with L effective paths in terms of channel correlation ...selective fading channel and develop the optimum precoder based on the eigenstructures of spatial correlation ...
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