On the performance of coherent and noncoherent UWB detection systems using a relay with multiple antennas

Authors:
Kiattisak Maichalernnukul;Thomas Kaiser;Feng Zheng
Affiliations:
Faculty of Electrical Engineering, Institute of Communications Technology, Leibniz University of Hannover, Hannover, Germany;Faculty of Electrical Engineering, Institute of Communications Technology, Leibniz University of Hannover, Hannover, Germany;Faculty of Electrical Engineering, Institute of Communications Technology, Leibniz University of Hannover, Hannover, Germany
Venue:
IEEE Transactions on Wireless Communications
Year:
2009

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Abstract

In this paper, we present detect-and-forward relaying approaches for a coherent ultra-wideband (UWB) detection (specifically selective-Rake reception) system and for a noncoherent UWB detection (specifically differential transmitted-reference, DTR) system in order to achieve greater coverage in multipath fading channels. Multiple-antenna relay systems are also proposed to further enhance the overall system performance. The corresponding bit error rate (BER) performance is evaluated theoretically and via simulations. The effect of some design factors on this performance is investigated. Analytical and simulation results verify the performance improvement of the proposed relay systems over the direct transmission systems.