Narrowband Interference Suppression for OFDM Systems with Guard Band

Author

Yang, Zan ; Zhao, Tingting ; Zhao, Yuping

Author_Institution

State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Peking Univ., Beijing, China

fYear

2010

fDate

6-9 Sept. 2010

Firstpage

1

Lastpage

5

Abstract

Narrowband interference (NBI) affects performance of orthogonal frequency division multiplexing (OFDM) system to a great extent. Although NBI can be suppressed by employing time-domain prediction error filter (PEF), its effectiveness is reduced due to the usage of guard band which interrupts the spectrum. This paper discusses this problem and proposes two methods to improve the efficiency of PEF in the presence of guard band. Simulations show that proposed methods outperform conventional PEF in the signal to interference plus noise ratio (SINR). Moreover, channel effect caused by PEF must be compensated before demodulation in OFDM system, which is also discussed in this paper.

Keywords

OFDM modulation; filters; interference suppression; prediction theory; radiocommunication; OFDM systems; guard band; narrowband interference suppression; orthogonal frequency division multiplexing; prediction error filter; Interference; Narrowband; OFDM; Signal to noise ratio; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference Fall (VTC 2010-Fall), 2010 IEEE 72nd

Conference_Location

Ottawa, ON

ISSN

1090-3038

Print_ISBN

978-1-4244-3573-9

Electronic_ISBN

1090-3038

Type

conf

DOI

10.1109/VETECF.2010.5594201

Filename

5594201