Scheduled System Maintenance:
On May 6th, single article purchases and IEEE account management will be unavailable from 8:00 AM - 12:00 PM ET (12:00 - 16:00 UTC). We apologize for the inconvenience.
By Topic

The performance of an adaptive least squares lattice decision-feedback equalizer on a fading multipath HF channel

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)
Linde, L.P. ; Dept. of Electron. & Comput. Eng., Pretoria Univ., South Africa

The performance of an adaptive lattice decision-feedback equalizer, originally proposed by F. Ling and J.G. Proakis (IEEE Trans. on Comm., vol.COM-33, no.4, p.348-56, 1985) is compared with that of transversal equalizer that uses a gradient tap adaptation algorithm operating in a periodic-channel estimation-mode. Results obtained over a simulated two-path HF channel model with a 1-ms differential multipath delay and 0.5-Hz fading rate show an approximately 5-dB advantage for the lattice equalizer for low signal-to-noise ratios (SNR), but only marginal improvement for high SNR. This phenomenon is primarily attributed to the occurrence of a significant number of flat fades during typical test runs over the two-path channel model, which accounts for the total lack of any form of diversity during these periods. Since diversity enhances modem performance in the presence of flat fades, the error rate plateau was significantly reduced by exploiting dual-polarization diversity without reducing the nominal bit speed of 2400 b/s

Published in:

Communications and Signal Processing, 1988. Proceedings., COMSIG 88. Southern African Conference on

Date of Conference:

24 Jun 1988