The design of a wideband microwave reflectometer for the purpose of inclusion in a breast cancer detection system is presented. In this system, a wideband frequency source is used to synthesize a narrow pulse via the ...

This paper describes the design of a Multiple Input Multiple Output testbed for assessing various MIMO transmission schemes in rich scattering indoor environments. In the undertaken design, a Field Programmable Gate Array ...

For the 4 wire-loop telephony circuit echo paths [1], mobile radio channels [2] and other channels, the impulse response of the channel has sparsely active" characteristics. We consider a discrete NLMS adaptive IIR equalizer ...

This paper describes the development of a very flexible multi-antenna testbed built on 5 PCBs. The FOM testbed (FOM, Flyable OFDM MIMO) was built with off-the-shelf components and can be configured with any number of ...

Dimensioning of mobile networks (e.g. 2G, 3G, WLAN etc.) is more or less restricted to the service area projection and wireless capacity formulation (calculation of number of base stations/access points (BSs/APs) required) ...

With the increasing dependence on wireless LANs (WLANs), businesses and educational institutions are becoming more concerned about network security. The latest WLAN security protocol, the IEEE 802.11i assures rigid security ...

In this paper we propose a protocol for periodical data collection applications in wireless sensor networks. The protocol is energy-aware in the sense that the way of energy consumption used here is evenly distributed. The ...

Power consumption is a crucial problem for energy-constrained ad hoc sensor networks. This paper proposes a new scheme called energy distributed algorithm to improve the energy efficiency of ad hoc sensor networks, in which ...

This paper outlines the implementation of collaborative beamforming to a remote low power wireless sensor network and presents its energy saving potential. The directivity procured from the beamforming allows power to be ...

This paper presents a new method to improve on block spread OFDM by exploiting time diversity to ensure that the blocks are independent and uncorrelated. Simulation results have shown significant improvement over conventional ...