Title :
A Study on Adaptive Modulation of Pre-coded OFDM combined with Error Correcting Code
Author :
Tsugi, Takahiro ; Itami, Makoto
Author_Institution :
Dept. of Appl. Electron., Tokyo Univ. of Sci., Tokyo
Abstract :
In OFDM transmission, it is possible to adoptively control transmission scheme of each sub-carrier according to the transmission channel because each sub-carrier in OFDM is orthogonally arranged in frequency domain. Although this sub-carrier independent adaptive modulation scheme is very efficient, it is necessary to transmit allocation information of modulation scheme, coding scheme and so on. In order to reduce transmission of extra information, use of a pre-coded OFDM transmission is very effective[1]. In this paper, adaptive determination of modulation scheme and coding rate of pre-coded OFDM transmission is proposed in order to improve transmission under power-line channels.
Keywords :
OFDM modulation; adaptive modulation; carrier transmission on power lines; channel coding; error correction codes; frequency-domain analysis; modulation coding; precoding; adaptive modulation; allocation information transmission; error correcting code; frequency domain; power-line channels; precoded OFDM; subcarrier independent adaptive modulation scheme; transmission scheme; Adaptive control; Additive noise; Convolutional codes; Error correction codes; Frequency domain analysis; Modulation coding; OFDM modulation; Programmable control; Quadrature phase shift keying; Zinc;
Conference_Titel :
Consumer Electronics, 2008. ICCE 2008. Digest of Technical Papers. International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4244-1458-1
Electronic_ISBN :
978-1-4244-1459-8
DOI :
10.1109/ICCE.2008.4587980
