Title :
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
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;
Conference_Titel :
Global Telecommunications Conference, 2000. GLOBECOM '00. IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-6451-1
DOI :
10.1109/GLOCOM.2000.891740
