By Topic

A subspace approach for blind multiuser detection based on second-order nonstationarity

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
$31 $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)
Ruifeng Zhang ; Dept. of Electr. & Comput. Eng., Drexel Univ., Philadelphia, PA, USA ; Tsatsanis, M.K.

This paper presents a novel technique for blindly starting up an MMSE receiver for a user newly entering a CDMA system. It is assumed that only one user at a time is admitted into the system and that data before and after the onset of the new transmission are available. In general, the two corresponding autocorrelation matrices (before and after the new user is admitted) differ by a low-rank matrix contributed by the autocorrelation of the new user signal. This fact yields a useful property, that the generalized eigenvectors corresponding to the minimum eigenvalue span the noise subspace of the low-rank signal term. Exploiting this subspace relation, the signature of the new user can be identified and thus an MMSE receiver for it can be constructed.

Published in:

Signals, Systems and Computers, 2000. Conference Record of the Thirty-Fourth Asilomar Conference on  (Volume:2 )

Date of Conference:

Oct. 29 2000-Nov. 1 2000