Impact of Control Channel Design on Cooperative Spectrum Sensing in Opportunistic Spectrum Access Networks

Source: BNET

In Opportunistic Spectrum Access (OSA) networks, Secondary unlicensed Users (SUs) need a common Control Channel (CC) to identify the spectrum opportunities, i.e., common spectrum holes unused by licensed Primary Users (PUs). T ...
Full article at: BNET  More like this  2 days ago, 10:04am CDT

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Joint Optimal Spectrum Sensing Time and Power Allocation in Ultra Wideband Cognitive Radio Networks

Source: BNET

Ultra WideBand (UWB) system is overlapped with various wireless systems, such as WLAN, WiMax and UMTS, which limits the use of UWB. Cognitive Radio (CR) enables UWB systems to efficiently use the overlapped spectrum without causing interfer ...
Full article at: BNET  More like this  2 days ago, 9:53am CDT

UK. Second 6G order for Sonardyne from DPS Offshore

Source: BYM News

Sonardyne International Ltd has received a major order for 6G acoustic positioning equipment worth £1m from Forum Energy Technologies, Inc’s equipment rental business, DPS Offshore. The is the second order placed by DPS Offshore i ...
Full article at: BYM News  More like this  3 days ago, 8:54am CDT

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Adaptive Cross Layer Approach for Video Transmission Over Cognitive UWB Network

Source: BNET

The demand of Quality of Service (QoS) for multimedia transmission over wireless network raises huge challenges such as time-varying channel conditions, limited resources, tight delay constraints, high bandwidth demand an ...
Full article at: BNET  More like this  5 days ago, 11:55am CDT

Radiation Pattern Behaviour of Reconfigurable Asymmetry Slotted Ultra Wideband Antenna

Source: BNET

This paper presents the results of radiation pattern measurement of small reconfigurable slotted Ultra WideBand (UWB) antennas. The measurements were conducted by using RF measurement and instrumentation facilities, software tools a ...
Full article at: BNET  More like this  5 days ago, 11:42am CDT

The Impact of Antenna Directivity and Channel Bandwidth on the Power Spectral Density of Wideband and UWB MISO Channels

Source: BNET

The combination of MIMO with WideBand (WB) and Ultra-WideBand (UWB) systems imply many new effects, which make the conventional channel models developed for narrowband transmissions to be inadequate for comm ...
Full article at: BNET  More like this  5 days ago, 11:35am CDT

Information-Theoretic Algorithm for Waveform Optimization Within Ultra Wideband Cognitive Radar Network

Source: BNET

A novel information-theoretic approach for designing the Ultra WideBand (UWB) waveforms is developed. This approach utilizes the Mutual Information (MI) between subsequent radar returns to extract desired information ...
Full article at: BNET  More like this  6 days ago, 12:22pm CDT

Enhanced FCME Thresholding for Wavelet-Based Cognitive UWB Over Fading Channels

Source: BNET

The cognitive Ultra-WideBand (UWB) network detects interfering narrowband systems and adapts its configuration accordingly. An inherently adaptive and flexible candidate for cognitive UWB transmission is the Wavelet Packet Multi-Carrier Mod ...
Full article at: BNET  More like this  6 days ago, 10:38am CDT