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Signal processing challenges for applying software radio principles in future wireless terminals: an overview
Author(s) -
Valkama Mikko,
Pirskanen Juho,
Renfors Markku
Publication year - 2002
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/dac.561
Subject(s) - software defined radio , computer science , digital signal processing , wireless , signal processing , transceiver , software , flexibility (engineering) , computer architecture , digital signal , digital down converter , signal (programming language) , analog signal processing , radio frequency , digital radio , radio receiver design , embedded system , computer hardware , telecommunications , transmitter , channel (broadcasting) , statistics , mathematics , programming language
The general idea of software radio is to develop highly integrated radio transceiver structures with high degree of flexibility and multimode capabilities, achieved through increased role of digital signal processing software in defining the functionalities which have traditionally been implemented with analog RF techniques. This paper explores the software radio concept from the receiver architecture and signal processing points of view, with mainly the wireless terminal application in mind. We first discuss the critical issues in alternative receiver architectures with simplified analog parts and increased configurability. We also introduce certain advanced digital signal processing techniques which could potentially relieve some of the essential problems and pave the way towards DSP‐based, highly integrated, and highly configurable terminals. Big emphasis is on efficient digital multirate signal processing methods and complex (I/Q) signal processing. Copyright © 2002 John Wiley & Sons, Ltd.