DocumentCode
1382403
Title
Analytical Expressions for the Power Spectral Density of CP-OFDM and ZP-OFDM Signals
Author
Van Waterschoot, Toon ; Le Nir, Vincent ; Duplicy, Jonathan ; Moonen, Marc
Author_Institution
ESAT-SCD, Katholieke Univ. Leuven, Leuven, Belgium
Volume
17
Issue
4
fYear
2010
fDate
4/1/2010 12:00:00 AM
Firstpage
371
Lastpage
374
Abstract
In this letter, analytical expressions are derived for the power spectral density (PSD) of orthogonal frequency division multiplex (OFDM) signals employing a cyclic prefix (CP-OFDM) or zero padding (ZP-OFDM) time guard interval. Under the relatively weak assumptions that (i) the data are independent and identically distributed on all OFDM subcarriers and (ii) the OFDM pulse shape is sufficiently localized in time, simple closed-form PSD expressions can be obtained. These expressions are then compared to existing OFDM PSD expressions and validated by inspecting the power spectra of some standardized OFDM signals.
Keywords
OFDM modulation; closed-form PSD expressions; cyclic prefix OFDM; orthogonal frequency division multiplex signals; power spectral density; zero padding OFDM; Cyclic prefix (CP); orthogonal frequency division multiplex (OFDM); power spectral density (PSD); zero padding (ZP);
fLanguage
English
Journal_Title
Signal Processing Letters, IEEE
Publisher
ieee
ISSN
1070-9908
Type
jour
DOI
10.1109/LSP.2010.2040651
Filename
5382590
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