By Topic

Effect of timing jitter on OFDM-based UWB systems

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

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

Nonideal sampling clocks in orthogonal frequency-division multiplexing (OFDM)-based ultra-wideband (UWB) systems introduce random timing jitter, which results in interchannel interference (ICI) and degrades the system performance. In this paper, we investigate the impact of timing jitter on OFDM-based UWB systems. We first derive an exact expression for the ICI power due to timing jitter. From the exact ICI power expression, we then develop various bounds on the ICI power under different situations. When timing jitters at different samples are independent, we obtain tight upper and lower bounds. When timing jitters at different samples are dependent, the ICI powers are different at different subcarriers and a universal upper bound for the ICI power is derived in this case. Compared with the exact expression for the ICI power, the developed bounds are easy to evaluate and provide insights. Their accuracy is confirmed by numerical examples. We also discuss the potential and the limitations of using oversampling to reduce the ICI power at the end.

Published in:

IEEE Journal on Selected Areas in Communications  (Volume:24 ,  Issue: 4 )