By Topic

Evaluation of turbo equalization for the high-rate HF waveforms of STANAG 4539

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
$33 $33
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)
R. Otnes ; Norwegian Defence Res. Establ., Kjeller, Norway ; N. Bauer

We have previously demonstrated that turbo equalization, or iterative equalization and decoding, can improve the receiver performance for medium-rate HF waveforms (up to 2400 bit/s using 8-PSK). In this paper, we apply turbo equalization to the high-rate waveforms (up to 9600 bit/s using 64-QAM) of STANAG 4539, and investigate the performance using simulations. The soft-in/soft-out (SISO) equalizer used is based on soft intersymbol interference cancellation followed by a linear filter. For the high-rate waveforms we find that this equalization algorithm needs some tweaking in order for the iterative procedure to converge. But when it does converge, turbo equalization outperforms a conventional single-pass receiver using decision-feedback equalization (DFE) by 6-7 dB in required signal-to-noise ratio to obtain a bit error rate of 10-4. Issues regarding computational complexity are also discussed.

Published in:

HF Radio Systems and Techniques, 2003. Ninth International Conference on (Conf. Publ. No. 493)

Date of Conference:

23-26 June 2003