We present an efficient, low-cost implementation of time-hopping impulse radio that fulfills the spectral mask mandated by the FCC and is suitable for high-data-rate, short-range communications. Key features are (i) all-baseband implementation that obviates the need for passband components, (ii) symbol-rate (not chip rate) sampling, A/D conversion, and digital signal processing, (iii) fast acquisition due to novel search algorithms, and (iv) spectral shaping that can be adapted to accommodate different spectrum regulations and interference environments. Computer simulations show that this system can provide 110 Mbps at 7–10 m distance, as well as higher data rates at shorter distances under FCC emissions limits. Due to the spreading concept of time-hopping impulse radio, the system can sustain multiple simultaneous users, and can suppress narrowband interference effectively.
This article is part of the series UWBState of the Art.
A Low-Cost Time-Hopping Impulse Radio System for High Data Rate Transmission
1 MERL Technology Lab, Mitsubishi Electric Research Laboratories, Cambridge, MA 02139, USA
2 School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0250, USA
3 Information Technology R&D Center, Mitsubishi Electric Corporation, 5-1-1 Ofuna, Kanagawa, Kamakura 247-8501, Japan
4 Department of Electrical Engineering, Princeton University, NJ 08544, USA
5 Department of Electrical and Computer Engineering, New Jersey Institute of Technology, Newark, NJ 07102-1982, USA
EURASIP Journal on Advances in Signal Processing 2005, 2005:683054 doi:10.1155/ASP.2005.397
The electronic version of this article is the complete one and can be found online at: http://asp.eurasipjournals.com/content/2005/3/683054
|Received:||10 October 2003|
|Revisions received:||1 June 2004|
|Published:||17 March 2005|
© 2005 Molisch et al.