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Outputs (2)

Comparing historical and current spectrum occupancy measurements in the context of cognitive radio (2012)
Presentation / Conference Contribution
Mehdawi, M., Riley, N., Ammar, M., & Zolfaghari, M. (2012, November). Comparing historical and current spectrum occupancy measurements in the context of cognitive radio. Presented at 2012 20th Telecommunications Forum (TELFOR)

Cognitive radio (CR) technology promises to be one possible solution to solve the problem of lack of frequency spectrum, by allowing access of unlicensed users in licensed bands, based on an opportunistic approach and without interfering with the lic... Read More about Comparing historical and current spectrum occupancy measurements in the context of cognitive radio.

A directionally tunable but frequency-invariant beamformer on an acoustic velocity-sensor triad to enhance speech perception (2012)
Presentation / Conference Contribution
Wu, Y. I., Wong, K. T., Yuan, X., Lau, S. K., & Tang, S. K. A directionally tunable but frequency-invariant beamformer on an acoustic velocity-sensor triad to enhance speech perception

Herein investigated are computationally simple microphone-array beamformers that are independent of the frequency-spectra of all signals, all interference, and all noises. These beamformers allow the listener to tune the desired azimuth-elevation "lo... Read More about A directionally tunable but frequency-invariant beamformer on an acoustic velocity-sensor triad to enhance speech perception.