By Topic

OFDM symbol shaping for reducing D/A requantization error in multiband 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

2 Author(s)
Sung-Won Chung ; Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea ; Kyu-Ho Park

We propose a mixed-mode orthogonal frequency domain multiplexing (OFDM) symbol shaping scheme to reduce digital-to-analog (D/A) requantization error in multiband OFDM ultra-wideband (UWB) systems. This method enhances system BER performance without reducing quantization step size. Otherwise, it can decrease D/A converter implementation complexity while maintaining the same system BER. We show that the D/A requantization error is reduced by digital-domain OFDM symbol scaling before D/A conversion and analog-domain inverse scaling after D/A conversion. This scheme gains more efficiency as the average PAR (peak-to-average-power ratio) of OFDM symbols increases. Simulation results show SNR improvement by the proposed scheme in IEEE P802.15.3a-compliant 480-Mbit/s UWB transmission.

Published in:

Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th  (Volume:7 )

Date of Conference:

26-29 Sept. 2004