Title :
Filter design for the conjugate OFDM-OQAM system
Author :
Laurenti, Nicola ; Vangelista, Lorenzo
Author_Institution :
Dipartimento di Elettronica e Inf., Padova Univ., Italy
Abstract :
We present a filter design procedure for a novel multicarrier modulation scheme, the conjugate OFDM-OQAM, which only requires amplitude tailoring of the prototype filter frequency response, regardless of its phase. It achieves good interchannel interference (ICI) and intersymbol interference (ISI) rejection, while still maintaining maximum spectral efficiency and a good time-frequency localization of the transmission pulses. Loosening the phase constraint allows the use of an effective technique for matched filter design, developed by Samueli (1988). Through this technique we are able to design a system with higher performance than standard OFDM-OQAM systems with the same prototype filter length
Keywords :
FIR filters; OFDM modulation; adjacent channel interference; frequency response; interference suppression; intersymbol interference; matched filters; network synthesis; quadrature amplitude modulation; ICI; ISI; conjugate OFDM-OQAM system; interchannel interference rejection; intersymbol interference rejection; matched filter design; maximum spectral efficiency; multicarrier modulation; performance; phase constraint; prototype filter frequency response; prototype filter length; time-frequency localization; transmission pulses; Finite impulse response filter; Frequency response; Image analysis; Interference; Matched filters; Phase modulation; Prototypes; Pulse shaping methods; Signal analysis; Signal processing;
Conference_Titel :
Image and Signal Processing and Analysis, 2000. IWISPA 2000. Proceedings of the First International Workshop on
Conference_Location :
Pula
Print_ISBN :
953-96769-2-4
DOI :
10.1109/ISPA.2000.914924
