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On the Properties of Cubic Metric for OFDM Signals

Title
On the Properties of Cubic Metric for OFDM Signals
Author
신동준
Keywords
Cubic metric (CM); fast Fourier transform (FFT); orthogonal frequency division multiplexing (OFDM); oversampling; peak-to-average power ratio (PAPR)
Issue Date
2016-01
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation
IEEE SIGNAL PROCESSING LETTERS, v. 23, NO 1, Page. 80-83
Abstract
As a metric for amplitude fluctuation of orthogonal frequency division multiplexing (OFDM) signal, cubic metric (CM) has received an increasing attention because it is more closely related to the distortion induced by nonlinear devices than the well-known peak-to-average power ratio (PAPR). In this letter, the properties of CM of OFDM signal is investigated. First, asymptotic distribution of CM is derived. Second, it is verified that 1.7 times oversampling rate is good enough to capture the CM of continuous OFDM signals in terms of mean square error, which is also practically meaningful because the fast Fourier transform size is typically 1.7 times larger than the nominal bandwidth in the long-term evolution (LTE) cellular communication systems.
URI
http://ieeexplore.ieee.org/document/7332743/http://hdl.handle.net/20.500.11754/31460
ISSN
1070-9908; 1558-2361
DOI
10.1109/LSP.2015.2502261
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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