Accession Number:

ADA429888

Title:

A Comparison of Frequency Offset Estimation Methods in Orthogonal Frequency Division Multiplexing (OFDM) Systems

Descriptive Note:

Master's thesis

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

Report Date:

2004-12-01

Pagination or Media Count:

65.0

Abstract:

OFDM is a modulation technique that achieves high data rates, increased bandwidth efficiency and robustness in multipath environments. However, OFDM has some disadvantages, such as sensitivity to channel fading, large peak to average ratio and sensitivity to frequency offset. The latter causes intercarrier interference ICI and a reduction in the amplitude of the desired subcarrier which results in loss of orthogonality. In this thesis, the effects of frequency offset are studied in terms of loss of orthogonality. A number of techniques for frequency offset estimation are presented and tested in computer simulations.

Subject Categories:

  • Theoretical Mathematics
  • Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE