Universiti Teknologi Malaysia Institutional Repository

Code rate adaptation for mitigating the effects of detect and avoid (DAA) mechanism on the performance of UWB systems

Rateb, A. M. and Yusof, S. K. and Fisal, N. (2008) Code rate adaptation for mitigating the effects of detect and avoid (DAA) mechanism on the performance of UWB systems. In: International RF and Microwave (RFM) Conference, 2008, Selangor.

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Official URL: http://dx.doi.org/10.1109/RFM.2008.4897379

Abstract

Ultra wideband (UWB) systems can cause potential interference to other narrowband systems sharing the same band, such as WiMax and Wi-Fi. Detect and avoid (DAA) mechanisms were suggested as a cognitive radio-based solution to reduce interference by adaptively reducing the transmitted power at the overlapping bands. Applying this mechanism may result in degrading the performance of UWB transmissions. In this paper, we suggest a minor modification to the DAA mechanism to mitigate this effect while preserving data rate, and thus providing UWB with more reliability. Simulation results show significant improvement in performance over various interference scenarios and data rates.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:cognitive radio, detect and avoid (DAA), MB-OFDM, spectrum shaping, ultra wideband (UWB)
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:16867
Deposited By: Liza Porijo
Deposited On:31 Oct 2011 05:56
Last Modified:31 Oct 2011 05:56

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