Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
In this paper, new exact and approximate moment generating functions (MGF) expression for generalized fading models are derived. Specifically, we consider the η-λ-μ, α-μ, α-η-μ, α-λ-μ, α-κ-μ, and α-λ-η-μ generalized fading distributions to derive approximate MGF expressions. The new expressions are very accurate and, in contrast to earlier results in the literature, avoid any complicated special functions,...
3×3 Split Ring resonators with inner ring rotation are etched at the back side of Circular microstrip antenna with elliptical rings. Rotation for multiple angles leads to an enhancement in impedance bandwidth. The selected UWB antenna has fabrication dimensions of 45 mm × 31mm × 1.27 mm. The rotation of the inner rings occur clockwise and counter clockwise for −47°, 33° and 10°. The preferable enhanced...
This paper presents a novel microstrip antenna that consists of conducting circular patch with elliptical etched rings and partial conducting ground plane. The fabrication was done using Rogers 5880 LZ substrate, and the dimensions are selected to be 45mm × 31mm × 1.27 mm. Split Ring Resonators (SRRs) will be used to enhance gain performance for wide frequency band. The Split Ring Resonator design...
In this paper, a novel unified analytical expression for average bit error rates (ABER) and average channel capacity (ACC) is presented for the к-μ shadowed fading model. This model has recently shown to be suitable for underwater acoustic wireless channel modeling using the measurements conducted by the Naval Research Laboratory [1], and is not so well covered in the public literature. Deploying...
This paper presents a new compact printed L-shaped monopole antenna for applications in ultra-wideband (UWB) systems such as home networks and various wireless systems. A miniaturization of the proposed antenna has been accomplished by using a parasatic element, resulting in a design with dimensions 25 mm × 25 mm × 1.6 mm. The antenna is printed on FR4 epoxy and is fed by SMA female connector. The...
This paper introduces new design and implementation of low profile planner antenna for Ultra-Wideband (UWB) applications. This new antenna consists mainly of conducting elliptical patch and the partial conducting ground plane, with fabrication dimensions of 41.95×21.2×1.27 mm, the design was fabricated using Rogers 5880 LZ substrate. The impedance bandwidth of the designed antenna is between 3 GHz...
This paper presents a compact low-profile elliptical planner antenna for UWB applications. The antenna is fabricated using Rogers 5880 LZ substrate, conducting patch, and conducting ground plane. The antenna size is 41.95mm×21.2 mm×1.27mm. The operating bandwidth of the designed antenna is from 2.5–10.5 GHz, which make the antenna useful for UWB applications. The length of the ground plane is selected...
This Novel antenna consists mainly of conducting Circular patch with elliptical rings and partial conducting ground plane, with dimensions of 45 mm×31 mm×1.27 mm, Rogers 5880 LZ is selected as a substrate. The impedance bandwidth of the designed antenna is between 3.5 GHz to 9 GHz. The selected partial ground length is 11 mm. VSWR and S11 are obtained for the new antenna through HFSS simulation for...
Many generalized fading distributions are given in terms of special functions, complicating the analysis of wireless performance metrics. This paper presents novel approximations to the extended incomplete gamma function, the modified Bessel function of the second type, and the generalized Q-function. New simpler and unified form for the probability density function of the extended generalized-K (EGK)...
This paper introduces a robust variable step size NLMS algorithm to improve interference suppression in smart antenna system. This algorithm is able to resolve signals arriving from narrowband sources propagating plane waves close to the array endfire. The results of the fixed step size NLMS will result in a trade-off issue between convergence rate and steady-state MSE of NLMS algorithm. This issue...
This paper addresses the performance of MIMO-OFDM, Multiple-Input-Multiple-Output (MIMO)-Orthogonal Frequency Division Multiplexing (OFDM), communication system in environments where the interfering noise exhibits non-Gaussian behavior due to impulsive phenomena. It presents the design and simulation of an adaptive receiver technique that aims to minimize the effect of impulsive noise on the performance...
This paper investigate the problem of Direction of Arrival (DOA) estimation using a 2D novel smart antenna array configuration. The new proposed 2D configuration overcomes the problem of the uniform linear array (ULA), specifically, its inability to detect signals arriving at grazing incidence. The new configuration can reliably estimate signals arriving from narrowband plane wave sources close to...
This paper addresses the performance of Multiple-Input-Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM), MIMO-OFDM communication system in environments where the interfering noise exhibits non-Gaussian behavior due to impulsive phenomena. It presents the design and simulation of an adaptive receiver technique that aims to minimize the effect of impulsive noise on the performance...
This paper proposes a new array geometry and a variable step-size (VSS) LMS algorithm to improve adaptive beamforming in smart antenna systems. The beamformer based on the proposed array geometry coupled with the use of VSSLMS is capable of resolving signals arriving from narrowband sources propagating plane waves close to the array endfire. The proposed array configuration comprises of doubly crossed...
This paper addresses the performance of the Multiple-Input-Multiple-Output(MIMO)-Orthogonal Fre-quency Division Multiplexing (OFDM), MIMO-OFDM communication system in environments where the interfering noise exhibits non-Gaussian behavior due to impulsive phenomena. It presents the design and simulation of an adaptive receiver technique that aims to minimize the effect of impulsive noise on the performance...
In recent days, relay assisted cellular networks are gaining more importance in research and development because of the recent adoption of new communication standards with relaying and cooperation communication. This has introduced a multichannel diversity along with the multiuser diversity and the channel aware dynamic resource allocation models. The issue of the optimal location of relays has risen...
In recent days, relay assisted cellular networks are gaining more importance in research and development because of the recent adoption of new communication standards with relaying and cooperation communication. This has introduced a multichannel diversity along with the multiuser diversity and the channel aware dynamic resource allocation models. The issue of the optimal location of relays has risen...
This paper introduces a comparative study between two algorithms for Direction-of-Arrival (DOA) estimation which are MVDR (Minimum Variance Distortionless Response) and MUSIC (Multiple Signal classification). The used algorithms are used for Direction-of-Arrival (DOA) estimation in smart antenna. The paper presents a comparative study for both algorithms in terms of the total mobile users number,...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.