By Topic

Iterative multiuser acquisition for DS-CDMA 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
$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

1 Author(s)
Tsung-Cheng Wu ; Dept. of Commun. Eng., I-Shou Univ., Kaohsiung, Taiwan

This paper proposes various new acquisition schemes based on iterative maximum likelihood estimation (MLE) for multiuser DS-CDMA system. Without high complexity of joint multiuser MLE, the iterative MLE partitions the multi-parameters estimation into iterative single-parameter estimation. A simple closed form of acquisition based on expectation-maximum (EM) and space alternating generalized EM (SAGE) are proposed. Comparing to conventional acquisition structures, the proposed EM and serial SAGE acquisition systems are similar to multistage and serial search acquisition, respectively. Lower complexity of serial SAGE acquisition with adaptive threshold decision is also demonstrated. Computer simulation demonstrates that EM and serial SAGE acquisitions are effective in multiple access interference.

Published in:

Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual  (Volume:4 )

Date of Conference:

22-25 April 2003