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Joint use of adaptive equalization and cyclic noise cancellation for band-limited OQAM based multi-carrier transmission in power-line communication systems

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4 Author(s)
Kunishima, H. ; Grad. Sch. of Inf. Sci. & Electr. Eng., Kyushu Univ., Fukuoka ; Koga, H. ; Muta, O. ; Akaiwa, Y.

As a method to realize a high-speed communication in home network, the power-line communication (PLC) technique is known. In PLC channels, transmission signal quality is degraded by colored non-Gaussian noise with uncommon characteristics as well as frequency-selectivity of channels. In this paper, we investigate the performance of the OQAM-MCT system with a small number of subcarriers where noise canceller is jointly used with time-domain per-subcarrier adaptive equalizer. In addition, we propose a modified noise cancellation method designed for OQAM-MCT system. The performance of the OQAM-MCT system is evaluated in PLC channels with measured impulse responses in presence of measured noise. Computer simulation results show that transmission rate of the OQAM-MCT system is improved by using both adaptive equalizer and noise canceller and also the OQAM- MCT system achieves better performance than OFDM system with insufficient length of guard interval.

Published in:

Power Line Communications and Its Applications, 2008. ISPLC 2008. IEEE International Symposium on

Date of Conference:

2-4 April 2008