TY - JOUR
T1 - Analytical expressions for the power spectral density of CP-OFDM and ZP-OFDM signals
AU - Van Waterschoot, Toon
AU - Le Nir, Vincent
AU - Duplicy, Jonathan
AU - Moonen, Marc
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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.
KW - Cyclic prefix (CP)
KW - Orthogonal frequency division multiplex (OFDM)
KW - Power spectral density (PSD)
KW - Zero padding (ZP)
UR - http://www.scopus.com/inward/record.url?scp=77249119229&partnerID=8YFLogxK
U2 - 10.1109/LSP.2010.2040651
DO - 10.1109/LSP.2010.2040651
M3 - Article
AN - SCOPUS:77249119229
SN - 1070-9908
VL - 17
SP - 371
EP - 374
JO - IEEE Signal Processing Letters
JF - IEEE Signal Processing Letters
IS - 4
M1 - 5382590
ER -