| Paper: | ITT-P1.9 | ||
| Session: | Defense and Security Applications | ||
| Time: | Wednesday, May 17, 14:00 - 16:00 | ||
| Presentation: | Poster | ||
| Topic: | Industry Technology Track: Sortware-Defined Radios | ||
| Title: | EQUALIZATION OF A TIME-VARYING CHANNEL IN THE PRESENCE OF DOPPLER RATE | ||
| Authors: | Ghassan Maalouli, General Dynamics, United States; Andreas Spanias, Arizona State University, United States | ||
| Abstract: | In this paper, we consider the problem of equalizing a time-varying channel in the presence of Doppler rate. Blind estimation of a time-varying channel in the presence of Doppler frequency alone based on a Complex-Exponential, Basis Expansion Model (CE-BEM) has been studied by several researchers in the field. Recently, we proposed a fractionally spaced channel model that does not require basis expansion and possesses a structure that models Doppler rate. We presented a data-aided, LS method for channel estimation. In this work we analyze the performance of the channel estimator using exact and perturbed Doppler estimates. We present a symbol-by-symbol based, decision-feedback equalizer for the time-varying channel and assess its performance in terms of BER. | ||
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