Title:
微小周波数オフセットのPost-FFT補正を達成する装置及び関連方法
Document Type and Number:
Japanese Patent JP2006512032
Kind Code:
A
Abstract:
In an orthogonal frequency division multiplexing (OFDM) system, a receiver of an OFDM signal via an air interface defines training symbols to be included in the frame structure of the air interface and a post-FFT receiver algorithm that can efficiently estimate a fractional frequency offset (e.g., a frequency offset less than a single intercarrier spacing). The algorithm may be modified to estimate a large frequency offset (e.g., of more than a single intercarrier spacing) using increased hardware complexity. The algorithm does not need a correlator block in its simplest implementation. The frequency detection itself features excellent performance in a very low SNR environment. However, if noise plus timing error is present, system parameters may be designed to substantially assure good performance in low SNR.
Inventors:
PRIOTTI Paolo
Application Number:
JP2005510012A
Publication Date:
April 06, 2006
Filing Date:
December 17, 2003
Export Citation:
Assignee:
NOKIA CORPORATION
International Classes:
C08J3/12; H04J11/00; C08J3/14; C08J3/215; C11D3/37; C11D11/00; C11D17/06; H04L27/26
Attorney, Agent or Firm:
Kawamori Mitsunori