| Publisher | University of Massachusetts | ||
|---|---|---|---|
| Format | 1.1MB PDF, requires Acrobat Rdr 5 | Date added | 15 Sep 2002 |
| Topics | Modems | ||
| Downloads | 195 | ||
There has been significant recent work in analyzing the variation of the complex envelope of the transmitted signal in an orthogonal frequency division multiplexing (OFDM) system and in designing methods to minimize this variation. Recently, a number of analyses have been based on the assumption that the complex envelope of the OFDM signal converges in some sense to a Gaussian random process as the number of subcarriers goes to infinity, but there exists no proof of this critical assumption. In this paper, a rigorous proof is provided that establishes that the complex envelope of a bandlimited uncoded OFDM signal converges weakly to a Gaussian random process as the number of subcarriers goes to infinity.
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