Title :
Hardware efficient Octaphase-shift keying detector
Author :
Chander, Shyam Sunder Uma ; Awawadeh, Amjad ; Kichenaradjou, Andoche ; Soderstrand, Michael A.
Author_Institution :
Sch. of Electr. & Comput. Eng., Oklahoma State Univ., Stillwater, OK, USA
Abstract :
A very simple LMS-based adaptive notch filter implemented in FPGAs can be used for carrier recovery of an Octaphase shift-keying signal. The key aspect of our paper lies in the alternative approach in the realization of carrier frequency detection or synchronization circuit. The carrier frequency after detection is used in the conventional Octaphase shift-keying detector. Also the demodulator has a simple hardware realization that does not require a reference signal.
Keywords :
adaptive filters; demodulators; detector circuits; field programmable gate arrays; least mean squares methods; notch filters; phase shift keying; signal detection; synchronisation; FPGA; LMS adaptive notch filter; Octaphase shift keying signal; carrier frequency detection; carrier recovery; demodulator; hardware efficiency; synchronization circuit; Adaptive filters; Circuits; Detectors; Finite impulse response filter; Frequency synchronization; Hardware; Least squares approximation; Phase modulation; Phase shift keying; Quadrature phase shift keying;
Conference_Titel :
Circuits and Systems, 2002. MWSCAS-2002. The 2002 45th Midwest Symposium on
Print_ISBN :
0-7803-7523-8
DOI :
10.1109/MWSCAS.2002.1187007
