Increasing of bit error rate performance for OFDM systems over fading channels-Reference-Cited by-同舟云学术

Increasing of bit error rate performance for OFDM systems over fading channels

Published:2022-12-31 Issue:4 Volume:25 Page:39-45
ISSN:2782-294X
Container-title:Physics of Wave Processes and Radio Systems
language:
Short-container-title:PWPRS

Author:

Averina Larisa I.,Lafickiy Alexandr Yu.

Abstract

A method for increasing performance of OFDM systems in multipath channels is proposed. The proposed method uses Kalman filter based channel estimator with block type pilot structure. Performance of the proposed method has been demonstrated for GSCM/EDGE channel models, typical for urban area and very small cells. The characteristics of the proposed algorithm are compared with other well-known methods. The impact of Doppler spread is considered. A computer simulation has been carried out to evaluate the required signal-to-noise ratio in case of fixed bit error probability. It is shown, that proposed method leads to lower bit error ratio for slow fading case, but its performance degrades with increasing Doppler frequency.

Publisher

Povolzhskiy State University of Telecommunications and Informatics

Subject

General Earth and Planetary Sciences,General Environmental Science

Reference11 articles.

1. Gusyatinskiy I.A. et al. Long Distance Tropospheric Radio. Moscow: Svyaz’, 1968, 248 p. (In Russ.)

2. Sklyar B. Digital Communication. Theoretical Foundations and Practical Application. Transl. from English, 2nd ed., corrected. Moscow: Vil’yams, 2003, 1104 p. (In Russ.)

3. Kalman-filter channel estimator for OFDM systems in time and frequency-selective fading environment

4. OFDM high speed channel complex gains estimation using Kalman filter and QR-detector

5. Enescu M., Roman T., Herdin M. Kalman-based estimation of measured channels in mobile MIMO-OFDM system. 2004 12th European Signal Processing Conference, 2004, pp. 1865–1868.