Title :
A novel channel estimation algorithm in OFDM power line communication system
Author :
Zhao, Huidong ; Hei, Yong ; Qiao, Shushan
Author_Institution :
Inst. of Microelectron., Beijing, China
Abstract :
An OFDM Low-Voltage PLC system is presented in this paper, and time-domain spread structure is proposed in this system, which can improve the reliability of pilots in receiver. To suppress the noise and attenuation of Power Line channel, a novel channel estimation algorithm is proposed. The proposed algorithm makes full use of information of all pilots in one OFDM symbol, and it has an advantage on complexity over LMMSE. Simulation results indicate that the proposed channel estimation algorithm performs better than LMMSE estimator, especially when Signal-to-Noise Ratio (SNR) is below 0dB.
Keywords :
OFDM modulation; carrier transmission on power lines; channel estimation; interference suppression; least mean squares methods; radio receivers; telecommunication network reliability; LMMSE; OFDM low-voltage PLC system; OFDM power line communication; attenuation suppression; channel estimation; noise suppression; radio receiver; reliability; signal-to-noise ratio; time-domain spread structure; AWGN; Bandwidth; Frequency estimation; OFDM; Signal to noise ratio; Time domain analysis; Time frequency analysis; Channel Estimation; OFDM; PLC; Time-domain Spread;
Conference_Titel :
ASIC (ASICON), 2011 IEEE 9th International Conference on
Conference_Location :
Xiamen
Print_ISBN :
978-1-61284-192-2
Electronic_ISBN :
2162-7541
DOI :
10.1109/ASICON.2011.6157305
