By Topic

Symbol-aided channel estimation and multiuser detection for CDMA systems using a decorrelating detector

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

3 Author(s)
Hosseinian, M. ; Calgary Univ., Alta., Canada ; Fattouche, M. ; Sesay, A.B.

A decorrelating filter detector is considered for multiuser detection. This filter operates on the outputs of matched filters which are matched to the original code waveforms of system. A maximum likelihood estimation to estimate the parameters of the decorrelating filter is proposed and derived. The estimation method is based on inserting known trailing sequences into the information data by all users simultaneously. To achieve the minimum mean square error (MMSE) in the estimation, a criterion for selecting the training sequences is suggested. Orthogonal training sequences are good candidates to approach the MMSE. The estimation method requires a matrix inversion at the end of each training period. An iterative matrix inversion method is suggested to distribute the computational load of the matrix inversion over the training period. The simulation results show some degradations in system performance compared to the case where a perfect knowledge of the channel is assumed. This degradation is clearly due to errors in the channel estimation

Published in:

Communications, Computers and Signal Processing, 1997. 10 Years PACRIM 1987-1997 - Networking the Pacific Rim. 1997 IEEE Pacific Rim Conference on  (Volume:2 )

Date of Conference:

20-22 Aug 1997