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Routing of Power Efficient IR-UWB Wireless and Wired Services for In-Building Network Applications

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5 Author(s)
Abraha, S.T. ; COBRA Res. Inst., Eindhoven Univ. of Technol., Eindhoven, Netherlands ; Okonkwo, C. ; Gamage, P.A. ; Tangdiongga, E.
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We present a wireless link budget analysis for impulse-radio ultrawideband (IR-UWB) systems with different pulse-shaping techniques using a realistic path loss model. Simulation results confirm that a proper pulse design technique is crucial for satisfying Federal Communications Commission mask requirements and performance enhancement of IR-UWB systems. We present a novel pulse design technique, based on a linear combination of modified doublets pulses and compare it with conventional pulses such as monocycle, doublet and fifth-order derivative of Gaussian pulses. The proposed pulse outperforms the conventional pulses in terms of spectral power efficiency and achievable reach using an M-ary pulse-amplitude modulation format and a fixed data rate. Furthermore, we propose and experimentally demonstrate routing over a hybrid wired-wireless network of IR-UWB services using the proposed pulse shape. The routing functionality is realized using a single semiconductor optical amplifier based on the cross-gain modulation technique. Error-free transmission of both 1.25 Gb/s baseband wired services and 2 Gb/s wireless IR-UWB services has been achieved over 1 km fiber link. The proposed technique can efficiently distribute and multicast both wireless IR-UWB and wired services in future in-building networks.

Published in:

Lightwave Technology, Journal of  (Volume:30 ,  Issue: 11 )

Date of Publication:

June1, 2012

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