WFRFT Precoding for Narrowband Interference Suppression in DFT-Based Block Transmission Systems

Author

Lin Mei ; Qinyu Zhang ; Xuejun Sha ; Naitong Zhang

Author_Institution

Harbin Inst. of Technol., Harbin, China

Volume

17

Issue

10

fYear

2013

fDate

Oct-13

Firstpage

1916

Lastpage

1919

Abstract

In this letter, we present a new approach to narrowband interference (NBI) suppression utilizing the weighted-type fractional Fourier transform (WFRFT) as a precoding scheme in the DFT-based communications systems. The proposed scheme can degenerate into a single carrier (SC) or a multi-carrier (MC) frequency division multiple access block transmission system by means of WFRFT parameter selection, which also leads to a variation of residual energy distribution of NBI following a frequency domain avoidance strategy. By virtue of parameter optimization of the WFRFT, the proposed system can outperform both SC and MC systems with regards to NBI suppression.

Keywords

discrete Fourier transforms; frequency division multiple access; interference suppression; precoding; DFT-based block transmission systems; WFRFT parameter selection; WFRFT precoding; frequency domain avoidance strategy; multicarrier frequency division multiple access; narrowband interference suppression; parameter optimization; residual energy distribution; weighted-type fractional Fourier transform; Bit error rate; Erbium; Interference; Narrowband; OFDM; Optimized production technology; Wireless communication; Weighted-type fractional Fourier transform (WFRFT); frequency division multiple access (FDMA); narrowband interference (NBI); orthogonal frequency division multiplexing (OFDM); precoding;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2013.090213.131126

Filename

6589291