Naslov
Clock frequency synchronisation in OFDM system for power line communications

Autori
Slišković, Maja ; Jeren, Branko

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the First International Workshop on Image and Signal Processing and Analysis / Lončarić, Sven - Pula, 2000, 241-246

Skup
First International Workshop on Image and Signal Processing and Analysis

Mjesto i datum
Pula, Hrvatska, 13.06.2000. - 16.06.2000

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
OFDM; frequency error estimation and correction; power line communication

Sažetak
Orthogonal frequency division multiplexing (OFDM) divides the available spectrum into several narrowband subchannels. To obtain a high spectral efficiency, the frequency responses of the subchannels are overlapping and orthogonal. An OFDM system can suffer from two types of frequency errors – a carrier frequency offset and a master clock frequency offset. Both types of frequency error degrade the performance of the OFDM receiver by loosing orthogonality between the subcarriers and introducing the interchannel interference. Since the power line communications are performed in the baseband, only second type of frequency error can occur. This paper analyses the effect of master clock frequency offset and suggests a method for its estimation based on the pilot signal. Furthermore, a method for frequency error correction is presented.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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