Feasibility of UWB radio: Impulse radio versus chaos-based approach

Géza Kolumbán, Tamás Krébesz, Chung Ming Lau

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

6 Citations (Scopus)


Both the peak power and the average power of emission are limited in UWB systems in order to keep the interference caused in an already existing narrowband radio system low enough. It is frequently overlooked that these power limits have to be checked not over the transmitted UWB signal but at the output of a bandpass filter specified in the FCC regulations. A further constraint exists in the handheld cheap devices where the low supply voltage reduces even further the attainable energy available to carry one bit information. The bit energy determines the coverage, the larger the bit energy, the larger the coverage. Introducing a novel approach an exact link budget calculation is proposed here for UWB impulse radio. Since the NLOS coverage of impulse radio obtained from the link budget is less than 2 m, the implementation of WLAN systems is not feasible with UWB impulse radio devices. To increase the bit energy, the UWB carrier-based approach, where the duty cycle is considerably increased, is proposed here. More than 16-dB improvement in bit energy has been achieved by increasing the UWB carrier duration to 300 ns.
Original languageEnglish
Title of host publicationISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems
Subtitle of host publicationNano-Bio Circuit Fabrics and Systems
Number of pages4
Publication statusPublished - 31 Aug 2010
Event2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems, ISCAS 2010 - Paris, France
Duration: 30 May 20102 Jun 2010


Conference2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems, ISCAS 2010

ASJC Scopus subject areas

  • Hardware and Architecture
  • Electrical and Electronic Engineering

Cite this