UWB Multipath Channel Model Based on Time-Domain UTD Technique

Richard Yao, Grace Xingxin Gao, Zhengqi Chen, Wenwu Zhu

Research output: Contribution to conferencePaperpeer-review


In this paper, we develop a deterministic UWB multipath channel model based on time-domain uniform geometrical theory of diffraction (TD-UTD) technique. The solution includes the three basic ray mechanisms of geometrical optics (GO) and UTD, i.e., directed ray, multi-reflected rays from lossy surfaces, and diffracted ray from lossy edge. Since the analysis is conducted in time-domain electromagnetic field, unlike statistical model, the approach for UWB channel model can determine not only signal attenuation, but also waveform distortion in terms of pulse shape and pulse duration when the UWB signal propagates in multipath environments. Here, a generic impulse response model by taking into account channel impulse response as well as transmitter and receiver antenna impulse responses is given. Then, the analytical description of time-domain single reflected ray and reflection coefficients of horizontal polarization and vertical polarization is provided. The time-domain multiple reflected rays are expressed by the convolution of individual reflection coefficient from lossy surfaces with different electromagnetic properties. The time-domain diffraction ray is described as time-domain diffraction coefficients and reflection coefficient. Finally, the simulation results in a typical office room are presented.

Original languageEnglish (US)
Number of pages6
StatePublished - 2003
EventIEEE Global Telecommunications Conference GLOBECOM'03 - San Francisco, CA, United States
Duration: Dec 1 2003Dec 5 2003


OtherIEEE Global Telecommunications Conference GLOBECOM'03
Country/TerritoryUnited States
CitySan Francisco, CA


  • Channel model
  • Multipath
  • Time-domain
  • UWB

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Global and Planetary Change


Dive into the research topics of 'UWB Multipath Channel Model Based on Time-Domain UTD Technique'. Together they form a unique fingerprint.

Cite this