TR2003-40

Spectral Shape of UWB Signals - Influence of Modulation Format, Multiple Access Scheme and Pulse Shape

    •  Nakache, Y.-P., Molisch, A.F., "Spectral Shape of UWB Signals - Influence of Modulation Format, Multiple Access Scheme and Pulse Shape", IEEE Vehicular Technology Conference (VTC), April 2003, vol. 4, pp. 2510-2514.
      BibTeX TR2003-40 PDF
      • @inproceedings{Nakache2003apr,
      • author = {Nakache, Y.-P. and Molisch, A.F.},
      • title = {Spectral Shape of UWB Signals - Influence of Modulation Format, Multiple Access Scheme and Pulse Shape},
      • booktitle = {IEEE Vehicular Technology Conference (VTC)},
      • year = 2003,
      • volume = 4,
      • pages = {2510--2514},
      • month = apr,
      • issn = {1090-3038},
      • url = {https://www.merl.com/publications/TR2003-40}
      • }
  • Research Area:

    Communications

Abstract:

This paper studies how to design the spectrum of a UWB signal in accordance with the FCC regulations and IEEE 802.15.3a recommendations. We show that the "conventional" UWB system with pulse-position modulation and time-hopping multiple access gives rise to spectral lines that violate the regulations. The impact of different modulation and multiple access schemes on the spectrum shaping is derived from the power spectral density of a non-linear and memoryless modulation. Detailed theoretical and simulation results stress the difficulties raised by the use of dithered pulse trains. We thus propose several solutions to achieve compliance with the FCC spectral masks.

 

  • Related News & Events

    •  NEWS    VTC 2003: 4 publications by Jinyun Zhang and others
      Date: April 22, 2003
      Where: IEEE Vehicular Technology Conference (VTC)
      MERL Contact: Jinyun Zhang
      Brief
      • The papers "Adaptive Space-Time Transmit Diversity for MIMO Systems" by Horng, J.H., Li, L. and Zhang, J., "Effect of Far Scatterer Clusters in MIMO Outdoor Channel Models" by Molisch, A.F., "Spectral Shape of UWB Signals - Influence of Modulation Format, Multiple Access Scheme and Pulse Shape" by Nakache, Y.-P. and Molisch, A.F. and "The Effect of Horizontal Array Orientation on MIMO Channel Capacity" by Almers, P., Tufvesson, F., Karlsson, P. and Molisch, A.F. were presented at the IEEE Vehicular Technology Conference (VTC).
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