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Effect of Doppler spread on OFDM based UWB system

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3 Author(s)
Capoglu, I.R. ; Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA ; Ye Li ; Swami, A.

We investigate the inter-carrier interference (ICI) caused by relative motion between transmitter and receiver in orthogonal frequency division multiplexing (OFDM) based ultra wide-band (UWB) communications. Since the Doppler shift is proportional to the subcarrier frequency, the time-selective fading is subcarrier dependent. An exact expression as well as bounds are derived for the degradation in performance, as measured by signal-to-interference ratio (SIR). A design example is given to illustrate the concepts developed In the work.

Published in:

Signal Processing Advances in Wireless Communications, 2004 IEEE 5th Workshop on

Date of Conference:

11-14 July 2004