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Direct-Conversion Radio Transceivers for Digital Communications (1995)
| Venue: | IEEE Journal of Solid-State Circuits |
| Citations: | 145 - 3 self |
BibTeX
@ARTICLE{Abidi95direct-conversionradio,
author = {Asad A. Abidi and Senior Member},
title = {Direct-Conversion Radio Transceivers for Digital Communications},
journal = {IEEE Journal of Solid-State Circuits},
year = {1995},
pages = {1399--1410}
}
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Abstract
Abstract-Direct-conversion is an alternative wireless receiver architecture to the well-established superheterodyne, particularly for highly integrated, low-power terminals. Its fundamental ad-vantage is that the received signal is amplified and filtered at baseband rather than at some high intermediate frequency. This means lower current drain in the amplifiers and active filters and a simpler task of image-rejection. There is considerable interest to use it in digital cellular telephones and miniature radio messaging systems. This paper briefly covers case studies in the use of direct-conversion receivers and transmitters and summarizes some of the key problems in their implementations. Solutions to these problems arise not only from more appropriate circuit design but also from exploiting system characteristics, such as the modulation format in the system. Baseband digital signal processing must be coupled to the analog front-end to make direct-conversion transceivers a practical reality. I.
Keyphrases
digital communication direct-conversion radio transceivers key problem direct-conversion transceivers considerable interest direct-conversion receiver simpler task baseband digital signal processing current drain miniature radio received signal case study digital cellular telephone low-power terminal active filter alternative wireless receiver architecture fundamental ad-vantage paper briefly appropriate circuit design high intermediate frequency well-established superheterodyne practical reality modulation format system characteristic
