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

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Author(s): Molisch Andreas F | Li Ye Geoffrey | Nakache Yves-Paul | Orlik Philip | Miyake Makoto | Wu Yunnan | Gezici Sinan | Sheng Harry | Kung SY | Kobayashi H | Poor H Vincent | Haimovich Alexander | Zhang Jinyun

Journal: EURASIP Journal on Advances in Signal Processing
ISSN 1687-6172

Volume: 2005;
Issue: 3;
Start page: 683054;
Date: 2005;
Original page

Keywords: ultra-wideband | impulse radio | RAKE receiver | spectral shaping

ABSTRACT
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.

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