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

fYear

2011

fDate

25-28 Oct. 2011

Firstpage

715

Lastpage

718

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;

fLanguage

English

Publisher

ieee

Conference_Titel

ASIC (ASICON), 2011 IEEE 9th International Conference on

Conference_Location

Xiamen

ISSN

2162-7541

Print_ISBN

978-1-61284-192-2

Electronic_ISBN

2162-7541

Type

conf

DOI

10.1109/ASICON.2011.6157305

Filename

6157305