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The performance of a digital wireless network that operates in a Rayleigh fading environment in the presence of Gaussian noise and heavy-tailed impulsive interference that can be modelled by an α- stable process is investigated. Such wireless networks include ad hoc or cognitive radio networks that operate in an unbounded fading/ shadowing environment with a Poisson interference field. For the system...
This paper proposes a three-dimensional (3-D) scattering model for multiple-input multiple-output (MIMO) land mobile stratospheric multipath-fading channels. Analytical and closed-form expressions for the spatial and temporal correlation functions between two arbitrary sub-channels are derived, assuming non-isotropic or isotropic scattering environments. This model can be used to estimate the required...
Low-cost and low-power sensor nodes forming wireless sensor networks (WSNs) have become suitable for a wide range of applications during recent years. These networks, due to their special functional characteristics, demand the implementation of energy-aware techniques in all layers. Recently a MIMO - based structure has been proposed to offer enhanced energy savings in WSNs under certain circumstances...
Low-cost and low-power sensor nodes forming Wireless Sensor Networks have become suitable for a wide range of applications during recent years. These networks demand the implementation of energy-aware techniques and low complexity protocols in all layers. Recently, a MIMO - based structure has been proposed to offer enhanced energy savings in WSNs, compared with simple SISO transmission. In this paper...
In this paper, we present and analyze an adaptive antenna array system used for spatial multiple access of single antenna users into a multiple antenna base-station. The system utilizes a multicarrier transmission method called multicarrier orthogonal code division multiplexing (MC-OCDM), which is a generalized form of orthogonal frequency division multiplexing (OFDM). The MC-OCDM multiplexes pilot...
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