Title :
Implementation of a bandwidth-efficient M-FSK demodulator for powerline communications
Author :
Maniatis, Gerasimos ; Efstathiou, Kostas ; Papadopoulos, Georgios
Author_Institution :
Aplied Electron. Lab., Patras Univ., Greece
Abstract :
In this paper, an implementation of a bandwidth-efficient M-ary frequency shift keying (M-FSK) demodulator is performed in a direct mode, by undersampling and analyzing consecutive triplets of signal samples. The method, which will be analyzed, is characterized by low complexity and can be realized in a solid-state circuit or embedded in a programmable device. A DSP based implementation will be presented, consisting of a bandpass filter, an A/D converter and a low cost DSP. The demodulator is targeted to powerline communications and operates at a bit rate of 19.2kbps, achieving a bandwidth usage of 3 bits/Hz and a satisfactory noise performance, optimizing the cost-and -performance to bitrate ratio.
Keywords :
analogue-digital conversion; band-pass filters; carrier transmission on power lines; convertors; demodulators; digital signal processing chips; frequency shift keying; A/D converter; DSP; M-FSK demodulator; bandpass filter; bandwidth efficient; low complexity; noise performance; powerline communications; programmable device; signal samples; solid-state circuit; Band pass filters; Bandwidth; Bit rate; Costs; Demodulation; Digital signal processing; Frequency shift keying; Performance analysis; Signal analysis; Solid state circuits;
Conference_Titel :
Solid-State Circuits Conference, 2003. ESSCIRC '03. Proceedings of the 29th European
Conference_Location :
Estoril, Portugal
Print_ISBN :
0-7803-7995-0
DOI :
10.1109/ESSCIRC.2003.1257214
