By Topic

Improving receiver performance for pilot-aided frequency selective CDMA channels using a MMSE switch mechanism and multipath noise canceller

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)
Huang, H. ; AT&T Bell Labs., NJ, USA ; Chih-lin I

The IS-95 downlink channel incorporates a pilot signal to aid the mobile receiver in obtaining coherent channel estimates for use in the RAKE receiver. We propose a simple, recursive multipath noise cancellation (MNC) detector which uses an on/off switch mechanism for controlling the noise cancellation for each RAKE finger. We derive the switch mechanism which minimizes the mean-squared error (MSE) at the RAKE output. This switched-MNC detector, when compared with the conventional RAKE receiver, demonstrates significant performance gains, increasing the downlink capacity of a typical IS-95 system by up to 10%, while requiring minimal additional complexity when implemented using a simple recursive structure for the MNC function. Furthermore, we observe that almost all of the performance gains of the MMSE switched-MNC detector can be achieved using the simpler, ad-hoc, “always-on” MNC detector, in which pilot multipath noise cancellation always occurs at each finger input without regard to minimizing the MSE

Published in:

Personal, Indoor and Mobile Radio Communications, 1997. Waves of the Year 2000. PIMRC '97., The 8th IEEE International Symposium on  (Volume:3 )

Date of Conference:

1-4 Sep 1997