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1. |
Record Nr. |
UNINA9910454805703321 |
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Autore |
Pàˆrssinen Aarno |
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Titolo |
Direct conversion receivers in wide-band systems [[electronic resource] /] / by Aarno Par̀ˆssinen |
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Pubbl/distr/stampa |
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Boston, : Kluwer Academic Publishers, c2001 |
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ISBN |
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1-280-20032-4 |
9786610200320 |
0-306-47545-6 |
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Edizione |
[1st ed. 2001.] |
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Descrizione fisica |
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1 online resource (251 p.) |
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Collana |
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The Kluwer international series in engineering and computer science ; ; SECS 655 |
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Disciplina |
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Soggetti |
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Integrated circuits - Design and construction |
Broadband communication systems - Equipment and supplies |
Radio circuits - Design and construction |
Radio - Transmitter-receivers - Equipment and supplies - Design and construction |
Electronic books. |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references. |
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Nota di contenuto |
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System Requirements for Radio Receivers in Wireless Communications -- Receiver Architectures -- Direct Conversion Receivers -- Circuit Implementations. |
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Sommario/riassunto |
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This book is based on my doctoral thesis at the Helsinki University of Technology. Several different projects during five years guided me from the basics of the RF IC design to the implementations of highly integrated radio receiver chips. Sharing time and effort between IC and system issues is not always straightforward. I have been lucky to follow both topics and share experiences with diligent and enthusiastic people having different specialities. As a result, this book will cover a wide range of different topics needed in the design of highly integrated radio receivers. Experiences from the first receiver prototypes for the third generation cellular systems form the basis of this book. Most of the issues are directly related to the early proposals of European and Japanese standardization organizations. For example, the chip rate was |
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originally set to 4. 096 Mcps in a wide-band CDMA channel. I have kept that number in the book in most of the examples although it has been later changed to 3. 84 Mcps. I hope that the readers will accept that and the possible other incompabilities to the latest specifications. At least in the research phase the changes even in the most essential requirements are definitely not a rare incident and IC designers should be able to react and modify their designs as soon as they can. |
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2. |
Record Nr. |
UNINA9910786941003321 |
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Autore |
Yelton Andromeda |
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Titolo |
Bridging the digital divide with mobile services [[electronic resource]] / Andromeda Yelton |
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Pubbl/distr/stampa |
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Chicago, Ill., : ALA TechSource, c2012 |
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ISBN |
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Descrizione fisica |
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1 online resource (37 p.) |
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Collana |
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Library Technology Reports, , 0024-2586 ; ; Volume 48, Number 1 |
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Disciplina |
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Soggetti |
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Mobile communication systems - Library applications |
Digital divide |
Mobile computing |
Smartphones |
Pocket computers |
Wireless communication systems |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references. |
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Nota di contenuto |
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Bridging the Digital Divide with Mobile Services; Cover; Contents; Who Are Smartphone Users?; Notes; Mobile Websites; Mobile-Friendly Portals; Mobile Library Websites; Picking a Tool; Resources; Notes; Expanding Access to Devices, Collections, and Services; Audiobooks; Texting: Reference and Notification Services; Expanding Access to Mobile Devices; The Unquiet Librarian; Notes; Where to Go Next; Showcasing Community Stories; Building Your Own Technological Capacity; Building Your Organization's Technological Capacity; Parting Thoughts: Why Mobile?; Resources; Notes |
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Sommario/riassunto |
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In this issue of Library Technology Reports, Andromeda Yelton shows how libraries can build on the breadth of this population to help bridge the digital divide and provide even greater access to information. Yelton breaks down the demographics of mobile internet users, provides examples of how different libraries are reaching out to these populations, and suggests what the future may hold for this trend. |
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