Title :
A low cost STBC-OFDM system with improved reliability for power line communications
Author :
Quan, Zhi ; Ribeiro, Moises Vidal
Author_Institution :
Dept. of Electr. Eng., Fed. Univ. of Juiz de Fora, Juiz de Fora, Brazil
Abstract :
This paper outlines the use of symbol repetition technique together with space time block code orthogonally frequency division multiplexing (STBC-OFDM) scheme for power line communication (PLC) when the receiver has complete knowledge about the channel state information. Due to redundancy in the proposed technique, a low-complex FFT can be implemented. Also, the way as the symbol diversity is explored, which can offer similar improvement found in space diversity, can improve the performance of STBC-OFDM scheme if the PLC channel is frequency-selective and corrupted by impulsive like noise, such as the additive impulsive Gaussian noise (AIGN). Simulation results reveal that the STBC-OFDM with a simple symbol repetition technique offers an enhanced reliability, compared to a regular STBC-OFDM when Alamouti code is considered.
Keywords :
AWGN; OFDM modulation; carrier transmission on power lines; fast Fourier transforms; multiplexing; space-time block codes; telecommunication network reliability; Alamouti code; PLC channel; STBC-OFDM system; additive impulsive Gaussian noise; channel state information; fast Fourier transforms; power line communications; space time block code orthogonally frequency division multiplexing; symbol repetition technique; Binary phase shift keying; Bit error rate; MIMO; Noise; OFDM; Power line communications; multicarrier modulation; power line communication; signal processing; space time block code;
Conference_Titel :
Power Line Communications and Its Applications (ISPLC), 2011 IEEE International Symposium on
Conference_Location :
Udine
Print_ISBN :
978-1-4244-7751-7
Electronic_ISBN :
978-1-4244-7749-4
DOI :
10.1109/ISPLC.2011.5764404
