By Topic

Noise variance estimation and optimal sequences for channel estimation in SC-FDE 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 $33
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)
D. Wang ; Dept. of Electron. Eng., Shanghai Jiao Tong Univ., Shanghai ; L. G. Jiang ; C. He

Noise variance is an important parameter for single-carrier ultra- wideband systems with frequency domain equalisation. The conventional method cannot obtain the noise variance in the case of using the estimated channel coefficients by least square (LS) criteria, whereas the LS channel estimator is a promising candidate owing to its easy implementation. To overcome this contradiction, proposed is a novel noise variance estimator using the LS channel coefficient estimates with the aid of a complex pilot sequence. Also derived is the Cramer-Rao bound on the proposed estimator. In addition, Chu's sequence is chosen as the optimal pilot sequence of LS channel estimation without increase of peak-to-average power ratio and with easy realisation. Simulations demonstrate the performance of the proposed schemes.

Published in:

Electronics Letters  (Volume:43 ,  Issue: 11 )