| Paper: | SPCOM-L3.4 | ||
| Session: | Superimposed training | ||
| Time: | Thursday, May 20, 10:30 - 10:50 | ||
| Presentation: | Lecture | ||
| Topic: | Signal Processing for Communications: Multi-Carrier, OFDM, and DMT Systems | ||
| Title: | WHAT IS THE PRICE PAID FOR SUPERIMPOSED TRAINING IN OFDM? | ||
| Authors: | Ning Chen; Georgia Institute of Technology | ||
| G. Tong Zhou; Georgia Institute of Technology | |||
| Abstract: | Orthogonal Frequency Division Multiplexing (OFDM) transmission with superimposed training is considered in this paper. The superimposed training scheme is promoted for its high bandwidth efficiency, low computational complexity, and possibly improved power amplifier (PA) efficiency. Channel equalization is also straightforward thanks to the OFDM structure. By analyzing the peak-to-average power ratio (PAR) of the superimposed OFDM signal and utilizing a peak power constraint, we demonstrate that it is possible to lose a little in the information signal power, but gain a lot in the power that is devoted to channel sounding. | ||
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