AWGN channels
Performance Analysis and Improvement of LT Codes over AWGN Channels
... noisy channels such as the additive white Gaussian noise (AWGN) channels [9-14], binary memoryless symmetry (BMS) channels [15], block-fading channels [16], and relay channels ...
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STC-Mimo Block Spread OFDM in Frequency Selective AWGN Channels
... From the performance, with different antenna configurations and propagation conditions the proposed MIMO-OFDM (STC) gives potentially higher spectral efficiency. Initially after coding as per the Space Time code (STC), ...
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Non data aided ML SNR estimation for AWGN channels with deterministic interference
... Besides ambient noise, the communication channels may suffer from deterministic interference. In terrestrial wire- less systems, the competing users sharing the same spec- trum resource, or simply the drift of the ...
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Performance Evaluation of OFDM System with Rayleigh, Rician and AWGN Channels
... In this paper we compare the performance in terms of BER using different modulation schemes on Rayleigh, Rician and AWGN Channel. This system model that is presented in this paper uses BPSK and 16-QAM as sub- ...
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Dual Tree Wavelet based OFDM: A Performance Calculation of Bit Error Rate
... conditions. AWGN channels, Flat Fading Channels (FFC), and frequency selective fading channels are considered during ...through AWGN channel which adds Gaussian noise to the transmitted ...
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Effects of Non-Ideal Pre-Distorter High Power Amplifiers in WCDMA Using Multi-User Detectors
... over AWGN channels when the predistorter for each of the TWTA and SSPA is modeled by polynomial functions, and we compare these predistorted power amplifiers with the ideal predistorted amplifier ...
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Online Full Text
... This study finds that the Quadrature Amplitude Modulation has good performance over a wide range of SNR (signal to noise ratio) in AWGN channels. Figure 3 illustrates the probability of false acquisition of ...
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Comparative Analysis of Various Digital Modulation Techniques for FHSS WCDMA over AWGN and Fading Channels
... bandwidth availability. CDMA operates over the frequency range of 800 MHz to 1.9 GHz and its channel is 1.23 MHz wide. Performance of CDMA depends on the type of modulation techniques used in CDMA. CDMA signal passes ...
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Multi-way relay networks: characterization, performance analysis and transmission scheme design
... of AWGN channels and are used in digital communications as high-rate signal constellations, which motivates the potential implementation of lattice codes in a ...
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Unequal Power Allocation For Image Transmission
... We focus on the transmission of JPEG2000 bit streams over wireless AWGN channels using UPA with OFDM as channel coder. Here for higher bandwidth efficiency and lower system complexity, we do not use any ...
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Performance of JPEG Image Transmission Using Proposed Asymmetric Turbo Code
... In this paper, we present simulation results on an image transmission system using a new class of asymmetric turbo codes [6], which consists of parallel concatenated convolu- tional codes with 8-state component codes ...
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Application of syndrome based Turbo decoding with adaptive computational complexity in LTE downlink
... fading channels TU and PedA the average number of itera- tions of the conventional Turbo decoder is much smaller than in the AWGN case: While for the AWGN channel the de- coder executes about ...
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Performance Evaluation of PAPR Reduction Techniques in Filter Bank Based Multicarrier Systems in AWGN and Fading Channels
... ABSTRACT: Orthogonal Frequency division Multiplexing (OFDM) is a multicarrier modulation technique which supports high data rate transmission and are widely used in digital audio/ video broadcasting, WiFi and WiMax. It ...
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Transmitter Detection Methods of Spectrum Sensing For Cognitive Radio Networks over Fading Channels
... An extensive set of simulations have been conducted using the system model as described in the previous section. The emphasis is to analyze the comparative performance of two spectrum sensing techniques. The result is ...
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Parallel Decentralized Network for the Detection of Unknown Signals Through Wireless Nakagami Fading Channels
... In this paper analytical and simulation results for the decentralized detection of unknown signals are introduced. Parallel sensor network scheme is assumed. Additive White Gaussian Noise (AWGN) and Nakagami ...
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Comparative analysis of Energy detection and Cyclostationary feature detection methods for AWGN, Rayleigh and Rician channels
... IJEDR1502063 International Journal of Engineering Development and Research (www.ijedr.org) 333 to the PU signal. AWGN block measure the signal strength through signal to noise ratio (SNR) parameter [5]. Output of ...
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Performance Analysis of the Blind Minimum Output Variance Estimator for Carrier Frequency Offset in OFDM Systems
... previous work [13], we proposed a new blind estimation al- gorithm which yields high bandwidth efficiency and high accuracy based on the minimum output variance (MOV). In [13], the performance of the MOV estimator is ...
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Performance Evaluation of OFDM Using BPSK over Different Fading Channel
... over AWGN, Rayleigh and Rician fading channel execution are assessed by plotting (SNR) under Bit error rate(BER) and execution correlation made for various modulation ...
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... It is seen that the system performs better as the Eb/No increases across all modulation techniques over the AWGN channel. It can also be seen that increasing the number of FFT points does not really affect the ...
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Performance Comparison of MIMO Systems over AWGN and Rayleigh Channels using OSTBC4 with Zero Forcing Receivers
... The impact of antenna selection on the performance of multiple input-multiple output (MIMO) systems over nonlinear communication channels was presented by A. I. Sulyman [11]. The author have derived exact ...
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