EP 1317831 A2 20030611 - METHOD AND ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) RECEIVER FOR REDUCING THE INFLUENCE OF HARMONIC INTERFERENCES ON OFDM TRANSMISSION SYSTEMS
Title (en)
METHOD AND ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) RECEIVER FOR REDUCING THE INFLUENCE OF HARMONIC INTERFERENCES ON OFDM TRANSMISSION SYSTEMS
Title (de)
VERFAHREN UND OFDM-EMPFÄNGER ZUM VERRINGERN DES EINFLUSSES HARMONISCHER STÖRUNGEN AUF OFDM-ÜBERTRAGUNGSSYSTEME
Title (fr)
PROCEDE ET RECEPTEUR A MULTIPLEXAGE FREQUENTIEL OPTIQUE POUR REDUIRE L'INFLUENCE DE PERTURBATIONS HARMONIQUES SUR DES SYSTEMES DE TRANSMISSION A MULTIPLEXAGE FREQUENTIEL OPTIQUE
Publication
Application
Priority
- DE 0103507 W 20010912
- DE 10045088 A 20000912
Abstract (en)
[origin: WO0223844A2] The invention relates to a method and device for improving, on the receive side, the transmission quality (residual/bit error rate) of a data transmission system, which is based on orthogonal frequency division multiplexing (OFDM) technology and which is negatively influenced by narrow-band harmonic interference signals. The invention takes into account two technical measures. In one technical measure, a received OFDM symbol is processed by means of a cyclic rotation of the OFDM receive symbol and of a subsequent Nyquist windowing in the time domain whereby leading to a reduction of the interference spectrum outside of the sub-carrier bandwidth. In the other technical measure, a channel estimation of the channel transmission function on the sub-carrier level is effected in parallel with the first technical measure, and the signal-to-noise ratio is calculated or estimated by estimating the interference power on the sub-carrier level. This information with regard to the noise power is subsequently taken into account as channel state information during an error decoding effected, for example, by a Viterbi decoder.
IPC 1-7
IPC 8 full level
H04L 1/00 (2006.01); H04L 27/26 (2006.01)
CPC (source: EP US)
H04L 1/0054 (2013.01 - EP US); H04L 27/2647 (2013.01 - EP US)
Citation (search report)
See references of WO 0223844A2
Designated contracting state (EPC)
AT DE ES IT SE
DOCDB simple family (publication)
WO 0223844 A2 20020321; WO 0223844 A3 20020510; EP 1317831 A2 20030611; US 2004022175 A1 20040205; US 7366088 B2 20080429
DOCDB simple family (application)
DE 0103507 W 20010912; EP 01978126 A 20010912; US 38033903 A 20030312