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Open Access

A Low-Cost Time-Hopping Impulse Radio System for High Data Rate Transmission

  • Andreas F. Molisch1Email author,
  • Ye Geoffrey Li2,
  • Yves-Paul Nakache1,
  • Philip Orlik1,
  • Makoto Miyake3,
  • Yunnan Wu4,
  • Sinan Gezici4,
  • Harry Sheng5,
  • SY Kung4,
  • H Kobayashi4,
  • H. Vincent Poor4,
  • Alexander Haimovich5 and
  • Jinyun Zhang1
EURASIP Journal on Advances in Signal Processing20052005:683054

Received: 10 October 2003

Published: 17 March 2005


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.

Keywords and phrases

ultra-widebandimpulse radioRAKE receiverspectral shaping

Authors’ Affiliations

MERL Technology Lab, Mitsubishi Electric Research Laboratories, Cambridge, USA
School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, USA
Information Technology R&D Center, Mitsubishi Electric Corporation, Kamakura, Japan
Department of Electrical Engineering, Princeton University, USA
Department of Electrical and Computer Engineering, New Jersey Institute of Technology, Newark, USA


© Molisch et al. 2005