[en] ABSTRACT Nowadays, the use of wireless communication systems is growing gra dually. In turn, the use of both electric and electronic devices also grows progressively. Taking into account that these devices are sources of radio noise and that this noise interferes with wireless communications, it is concluded that there is a problem. Impulsive noise is a component of radio noise. Normally the power of this component is greater than the power of the others, so it can be said that it is the one that most interferes with wireless communications. Because of this it has been decided to carry out this project, measure and characterize the impulsive noise that in this case will be of two appliances. The request ITU-R214-5 calls for studies on impulsive noise and through this project we will contribute to this request by providing real measurement data, or rather, measuring and characterizing impulsive noise in interior spaces. In this project, the results of impulsive noise measurements, the methodology for the measurement and characterization of this and the conclusions obtained after the completion of the project are provided. Measurements have been made at four different frequencies in the range of 63 MHz to 139 MHz in the VHF band, and at different distances from 0.5 m to 3 m from the source. The procedure and methodology for the measurement and characterization of impulsive noise has been done following the instructions of recommendation ITU-R SM.1753. One of the conclusions, has been that in most cases the level of impulsive noise is 25-30 dB greater than that of other noises, and there fore that the levels obtained from impulsive noise are quite relevant.

[eu] LABURPENA Gaur egun, haririk gabeko komunikazio sistemen erabilera gero eta gehiago handitzen ari da. Era berea aparailu bai elektriko baita elektronikoen erabilera gero eta handiagoa da. Kontuan izanda bigarren horiek zarata erradio elektrikoa sortzen dutela, eta zarata horrek haririk gabeko komunikazio sistemekin interferentziak sortzen dituela, arazo bat dagoela esan daiteke. Hemen sartzen da pultsu-zarata. Pultsu-zarata zarata erradioelektrikoaren osagaietako bat da. Normalean gai nontzeko osagaiek baino potentzia handiagoa du eta horren ondorioz interferentzietan nabarmen eragiten duena dela esan daiteke. Hori dela eta proiektu hau egitea erabaki da, pultsu-zarata neurtu eta karakterizatzea, kasu honetan inguruan ditugun pare bat e txetresnarena. ITU-R 214-5 eskaerak pultsu-zarataren inguruko ikerketak eskatzen ditu, eta proiektu honen bidez eskaera horiei erantzuna emango zaie neurketa errealen datuak emanez, edo hobeto esanda espazio itxietan pultsu-zarataren neurketa eta karakteri zazioa eginez. Proiektu honetan, eraikin barnean egindako pultsu-zarataren neurketen emaitzak, hauek egiteko eta karakterizatzeko metodologia eta guztiaren ondorioak ematen dira. Neurketa horiek lau maiztasun desberdinetan egin dira 63 MHz eta 139 MHz tartean, denak VHF bandan eta iturritik 5 distantzia desberdinetara 0.5 m eta 3 m artean. Pultsu-zarataren neurketa eta karakterizazioaren metodologia eta prozedurak ITU-R SM.1753 gomendioaren arabera egin dira. Ondorioetako bat, kasu gehienetan pultsu-zarataren maila gainontzeko zaraten maila baino 25-30 dB altuagoa dela da, eta beraz, lortutako pultsu-zarataren maila maximoak adierazgarriak direla ondorioztatu da.