Outputs (18)

Performance Evaluation of Actual Multielement Antenna Systems Under Transmit Antenna Selection/Maximal Ratio Combining (2011)
Journal Article
Papamichael, V. C., & Karadimas, P. (2011). Performance Evaluation of Actual Multielement Antenna Systems Under Transmit Antenna Selection/Maximal Ratio Combining. IEEE Antennas and Wireless Propagation Letters, 10, 690-692. https://doi.org/10.1109/lawp.2011.2161662

In this letter, the performance of actual multielement antenna (MEA) systems under the transmit antenna selection/maximal ratio combining (TAS/MRC) technique is evaluated. An alternative version of an efficient, recently developed, stochastic electro... Read More about Performance Evaluation of Actual Multielement Antenna Systems Under Transmit Antenna Selection/Maximal Ratio Combining.

A Generalized Analysis of Three-Dimensional Anisotropic Scattering in Mobile Wireless Channels-Part I: Theory (2011)
Presentation / Conference Contribution
Karadimas, P., & Zhang, J. (2011, May). A Generalized Analysis of Three-Dimensional Anisotropic Scattering in Mobile Wireless Channels-Part I: Theory. Presented at 2011 IEEE Vehicular Technology Conference (VTC 2011-Spring), Budapest, Hungary

In this paper, we present a generalized theoretical analysis for multipath scattering in mobile wireless channels where scattered power arrives into three dimensions (3-D). Moreover, multipath power can arrive into any arbitrary number of discrete an... Read More about A Generalized Analysis of Three-Dimensional Anisotropic Scattering in Mobile Wireless Channels-Part I: Theory.

On the Scatterers' Mobility and Second Order Statistics of Narrowband Fixed Outdoor Wireless Channels (2010)
Journal Article
Karadimas, P., Vagenas, E. D., & Kotsopoulos, S. A. (2010). On the Scatterers' Mobility and Second Order Statistics of Narrowband Fixed Outdoor Wireless Channels. IEEE Transactions on Wireless Communications, 9(7), 2119-2124. https://doi.org/10.1109/twc.2010.07.080874

In this paper, we study the temporal behavior of narrowband fixed outdoor wireless channels by modeling the impact of scatterers' mobility on the second order statistics of such channels. We show that the Nakagami-m, gamma, Weibull and lognormal prob... Read More about On the Scatterers' Mobility and Second Order Statistics of Narrowband Fixed Outdoor Wireless Channels.

Stochastic Modeling of Narrowband Fading Channels with Three Dimensional Diffuse Scattering (2009)
Book Chapter
Karadimas, P. (2009). Stochastic Modeling of Narrowband Fading Channels with Three Dimensional Diffuse Scattering. In S. Kotsopoulos, & K. Ioannou (Eds.), Handbook of Research on Heterogeneous Next Generation Networking: Innovations and Platforms (361-381). IGI Global. https://doi.org/10.4018/978-1-60566-108-7.ch016

This chapter studies a composite stochastic model, in which the diffuse component arises from three dimensional (3-D) multipath scattering. That case occurs especially in dense scattering environments, in which the tall obstacles cause arrival of mul... Read More about Stochastic Modeling of Narrowband Fading Channels with Three Dimensional Diffuse Scattering.

Ergodic Capacity for the SIMO Nakagami- Channel (2009)
Journal Article
Vagenas, E. D., Karadimas, P., & Kotsopoulos, S. A. (2009). Ergodic Capacity for the SIMO Nakagami- Channel. EURASIP Journal on Wireless Communications and Networking, 2009(1), Article 802067. https://doi.org/10.1155/2009/802067

This paper presents closed-form expressions for the ergodic channel capacity of SIMO (single-input and multiple output) wireless systems operating in a Nakagami- fading channel. As the performance of SIMO channel is closely related to the diversity c... Read More about Ergodic Capacity for the SIMO Nakagami- Channel.

A Modified Loo Model with Partially Blocked and Three Dimensional Multipath Scattering: Analysis, Simulation and Validation (2009)
Journal Article
Karadimas, P., & Kotsopoulos, S. A. (2010). A Modified Loo Model with Partially Blocked and Three Dimensional Multipath Scattering: Analysis, Simulation and Validation. Wireless Personal Communications, 53(4), 503-528. https://doi.org/10.1007/s11277-009-9698-z

This paper presents a novel mobile fading channel model, belonging to the class of Loo models, in which the multipath power arrives both in three dimensions (3-D) and in two angular sectors at the azimuth receiver’s plane. Moreover shadowing affects... Read More about A Modified Loo Model with Partially Blocked and Three Dimensional Multipath Scattering: Analysis, Simulation and Validation.

The Weibull–Lognormal Fading Channel: Analysis, Simulation, and Validation (2008)
Journal Article
Karadimas, P., & Kotsopoulos, S. (2009). The Weibull–Lognormal Fading Channel: Analysis, Simulation, and Validation. IEEE Transactions on Vehicular Technology, 58(7), 3808-3813. https://doi.org/10.1109/tvt.2008.2002697

In frequency-nonselective fading channels, the partial waves arriving at the mobile receiver cannot explicitly be of homogeneous nature due to nonuniform scattering caused by objects of specific reflective nature. Moreover, shadowing influences the r... Read More about The Weibull–Lognormal Fading Channel: Analysis, Simulation, and Validation.

A Generalized Modified Suzuki Model with Sectored and Inhomogeneous Diffuse Scattering Component (2008)
Journal Article
Karadimas, P., & Kotsopoulos, S. A. (2008). A Generalized Modified Suzuki Model with Sectored and Inhomogeneous Diffuse Scattering Component. Wireless Personal Communications, 47(4), 449-469. https://doi.org/10.1007/s11277-008-9493-2

This paper presents a mixture stochastic process by multiplying a Weibull process with a lognormal one. The first one models the possible scattering non-uniformities of the channel, whereas the second accounts for the slow term variations of the loca... Read More about A Generalized Modified Suzuki Model with Sectored and Inhomogeneous Diffuse Scattering Component.