A study of a loop interference canceller for the relay stations in an SFN for digital terrestrial broadcasting

Author

Hamazumi, Hiroyuki ; Imamura, Koichiro ; Iai, Naohiko ; Shibuya, Kazuhiko ; Sasaki, Makoto

Author_Institution

NHK Sci. & Tech. Res. Labs., Tokyo, Japan

Volume

1

fYear

2000

fDate

2000

Firstpage

167

Abstract

In each relay station in an SFN (single frequency network) for DTB (digital terrestrial broadcasting), the loop interference is caused by the coupling from the transmitting antenna to receiving antenna. The interference must be reduced to an allowable level in order to avoid problems with distortion and oscillation. We propose a frequency-domain adaptive cancellation algorithm using reference signals carried in the OFDM signal. The principle of the proposed algorithm is outlined and the usefulness of the algorithm is verified by the results of computer simulations

Keywords

FIR filters; OFDM modulation; adaptive filters; adaptive signal processing; broadcasting; digital radio; filtering theory; frequency-domain analysis; interference suppression; quadrature amplitude modulation; radiofrequency interference; receiving antennas; transmitting antennas; OFDM signal; SFN; adaptive FIR fliter; computer simulations; digital terrestrial broadcasting; distortion avoidance; frequency-domain adaptive cancellation algorithm; loop interference canceller; oscillation problem avoidance; receiving antenna; reference signals; relay stations; single frequency network; transmitting antenna; Broadcasting; Circuits; Computer simulation; Delay; Digital relays; Interference cancellation; OFDM; Receiving antennas; Signal processing algorithms; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 2000. GLOBECOM '00. IEEE

Conference_Location

San Francisco, CA

Print_ISBN

0-7803-6451-1

Type

conf

DOI

10.1109/GLOCOM.2000.891740

Filename

891740