| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 449467 | AEU - International Journal of Electronics and Communications | 2008 | 8 Pages |
Abstract
We design an optimal superimposed training (SIT) scheme for orthogonal frequency division multiplexing (OFDM) systems. Linear minimum mean square error (MMSE) and least square (LS) channel estimator are developed. The proposed optimal SIT consists of two parts, optimal training sequences deduced with respect to the channel estimate's mean square error (MSE) and optimal power allocation between training and data derived by minimizing the averaged channel capacity lower bound. The relationship between bit error ratio (BER) and averaged capacity bound is investigated under the optimal SIT. Simulation results validate our optimum design.
Keywords
Related Topics
Physical Sciences and Engineering
Computer Science
Computer Networks and Communications
Authors
Qinghai Yang, Kyung Sup Kwak,