Title :
A new architecture for orthogonally multiplexed QAM systems
Author :
Cariolaro, G. ; Tognetti, D. ; Vannucchi, G.
Author_Institution :
Dipartimento di Elettronica e Inf., Padova Univ., Italy
fDate :
29 Nov-2 Dec 1993
Abstract :
The classical architecture for an orthogonally multiplexed QAM system consists of a DFT processor followed by a polyphase filterbank, both working at the rate of individual channels. The paper presents a new architecture consisting of (a) serial-to-parallel conversion, (b) a single polyphase filter, (c) a multitone chirp modulator, and (d) a final equalizer. The overall complexity is of the same order as the classical solution with a different sharing between the memoryless and filtering parts
Keywords :
amplitude modulation; digital filters; equalisers; filtering and prediction theory; modulators; multiplexing; DFT processor; architecture; equalizer; multitone chirp modulator; orthogonally multiplexed QAM systems; polyphase filterbank; serial-to-parallel conversion; Chirp modulation; Digital TV; Discrete Fourier transforms; Equalizers; Filter bank; Filtering; Modems; Quadrature amplitude modulation; Radio spectrum management; Time division multiplexing;
Conference_Titel :
Global Telecommunications Conference, 1993, including a Communications Theory Mini-Conference. Technical Program Conference Record, IEEE in Houston. GLOBECOM '93., IEEE
Conference_Location :
Houston, TX
Print_ISBN :
0-7803-0917-0
DOI :
10.1109/GLOCOM.1993.318411
