Cyclostationarity-based classification of orthogonal frequency division multiplexing and single carrier linear digital modulations

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Authors
  1. Dobre, O.A.
  2. Punchihewa, A.
Corporate Authors
Defence R&D Canada - Ottawa, Ottawa ONT (CAN);Memorial Univ of Newfoundland, St John's NFLD (CAN) Faculty of Engineering and Applied Science
Abstract
In recent years, new technologies for wireless communications have emerged. The wireless industry has shown great interest in orthogonal frequency division multiplexing (OFDM) technology, due to the efficiency of OFDM schemes to convey information in a frequency selective fading channel without requiring complex equalizers. On the other hand, the emerging OFDM wireless communication technology raises new challenges for the designers of intelligent radios, such as discriminating between OFDM and single-carrier modulations. In this report we investigate signal cyclostationarity to discriminate between OFDM and single carrier linear digital (SCLD) modulations. We derive the analytical expressions for the nth-order (q-conjugate) cyclic cumulant (CC) and cycle frequencies of a received baseband OFDM signal, and propose a classifier based on the second-order CC to discriminate between the two aforementioned signal classes. Simulations are carried out to confirm the theoretical developments.

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Report Number
DRDC-OTTAWA-CR-2009-296 — Contractor Report
Date of publication
01 Apr 2010
Number of Pages
44
DSTKIM No
CA033912
CANDIS No
533391
Format(s):
Electronic Document(PDF)

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