Implementation of a new ultrawide-band impulse system

In this letter, we propose a new optically based system to generate ultrawide-band (UWB) impulse signals. The system includes a Fabry-Pe/spl acute/rot laser diode under gain-switched operation and an erbium-doped fiber amplifier used as an external-injection light source to generate optical pulses on the transmitter end, together with a PIN photodiode and a first-order microwave differentiator to convert optical pulses into electrical Gaussian monocycle pulses on the receiver front-end. The experimental and fast Fourier transform analytical results demonstrate that the proposed system can generate UWB impulse signals and provide several gigahertz bandwidths for future applications of high-bit-rate UWB wireless systems.

[1]  Jin Liu,et al.  A CMOS impulse generator for UWB wireless communication systems , 2004, 2004 IEEE International Symposium on Circuits and Systems (IEEE Cat. No.04CH37512).

[2]  Walter Hirt,et al.  Composite Reconfigurable Wireless Networks: the Eu R&d Path towards 4g , 2022 .

[3]  Moe Z. Win,et al.  Ultra-wide bandwidth time-hopping spread-spectrum impulse radio for wireless multiple-access communications , 2000, IEEE Trans. Commun..

[4]  G.R. Aiello,et al.  Design of a multiband OFDM system for realistic UWB channel environments , 2004, IEEE Transactions on Microwave Theory and Techniques.

[5]  S. Chi,et al.  Generation of wavelength-tunable optical pulses using EDFA as external-injection light source and amplifier for fabry-Pe/spl acute/rot laser diode , 2004, IEEE Photonics Technology Letters.

[6]  Ching-Wen Hsue,et al.  Implementation of first-order and second-order microwave differentiators , 2004 .

[7]  Xiaomin Chen,et al.  Monocycle shapes for ultra wideband system , 2002, 2002 IEEE International Symposium on Circuits and Systems. Proceedings (Cat. No.02CH37353).

[8]  G. R. Aiello,et al.  Ultra-wideband wireless systems , 2003 .