Syed Yusof, Sharifah Kamilah and Fisal, Norsheila and A. M., Rateb (2010) Improvement of ultra-wideband link performance over bands requiring interference mitigation in Korea. ETRI Journal, 32 (1). 44 -52. ISSN 1225-6463
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Official URL: http://dx.doi.org/10.4218/etrij.10.0109.0218
Ultra-wideband (UWB) systems have witnessed a debate over whether they may cause interference to other existing and future narrowband systems sharing their band of operation. The detect and avoid (DAA) mechanism was developed as a solution to reduce interference to narrowband systems in order to ease regulatory concerns. It works by adaptively reducing the transmitted power at the overlapping bands upon detecting an active narrowband link. However, employing DAA degrades the performance of UWB transmissions. In this paper, we present the Korean UWB regulations as an example of regulations that require DAA in certain bands. We investigate DAA’s impact on performance and propose a method to mitigate it, which provides UWB with the more efficient support of the DAA mechanism and enables it to avoid a larger number of narrowband users while sustaining the data rate. Results show significant improvement in performance with the application of our technique compared to conventional performance.
|Uncontrolled Keywords:||detect and avoid (DAA), ultra-wideband (UWB), coexistence, multiband orthogonal frequency division multiplexing (MB-OFDM)|
|Subjects:||T Technology > TK Electrical engineering. Electronics Nuclear engineering|
|Deposited By:||Liza Porijo|
|Deposited On:||28 Jun 2012 00:35|
|Last Modified:||08 Feb 2017 06:34|
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