Direct conversion receivers in wide-band systems / by Aarno Par̈ssinen.
Wide-band systems will be the next significant generation in wireless communications. Those include both wireless local area networks and cellular systems with a large coverage area. They will provide a higher data rate and access to internet and video services, for example. Although most of the dat...
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Full Text (via ProQuest) |
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| Main Author: | |
| Format: | eBook |
| Language: | English |
| Published: |
Boston :
Kluwer Academic Publishers,
©2001.
|
| Series: | Kluwer international series in engineering and computer science ;
SECS 655. |
| Subjects: |
MARC
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| 100 | 1 | |a Pärssinen, Aarno. | |
| 245 | 1 | 0 | |a Direct conversion receivers in wide-band systems / |c by Aarno Par̈ssinen. |
| 260 | |a Boston : |b Kluwer Academic Publishers, |c ©2001. | ||
| 300 | |a 1 online resource (xv, 230 pages) : |b illustrations. | ||
| 336 | |a text |b txt |2 rdacontent. | ||
| 337 | |a computer |b c |2 rdamedia. | ||
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| 490 | 1 | |a The Kluwer international series in engineering and computer science ; |v SECS 655. | |
| 504 | |a Includes bibliographical references. | ||
| 520 | |a Wide-band systems will be the next significant generation in wireless communications. Those include both wireless local area networks and cellular systems with a large coverage area. They will provide a higher data rate and access to internet and video services, for example. Although most of the data processing is performed digitally, also the requirements and possibilities to implement the analog part of the radio receiver will be different compared to the second-generation narrow-band receivers. Direct conversion architecture is a distinct candidate for wide-band systems because some non-idealities involved in baseband signal processing are significantly relaxed. The requirements and feasibility of direct conversion in wide-band systems are analyzed in this work. The main emphasis is on cellular systems based on direct sequence code division multiple access, but the same principles are generally valid in all receivers for different applications. The basic principles and design methods involved in receiver design are overviewed as well as the most common radio architectures. In a detailed analysis, the fundamental limitations of the direct conversion architecture are analyzed in wide-band signal processing. Especially, the effect of envelope distortion is characterized both with respect to the specific modulation and to the implementation of a downconversion mixer. Downconversion mixer is the key component in direct conversion because it transfers the radio frequency signal immediately down into the baseband after a relatively small gain at the preceding signal processing blocks, which do not provide filtering of the unwanted radio channels within the system band. Both switching mixers and subsampling mixers are analyzed. Direct Conversion Receivers in Wide-Band Systems consists of four different circuit implementations. A subharmonic sampler operating up to 2 GHz is implemented with a GaAs MESFET technology. The second IC is a CMOS low-noise amplifier with an optimized interface to a subsampling mixer. Two BiCMOS implementations of the wide-band direct conversion receiver are given. The first consists of four different chips: RF front-end, analog baseband circuitry and two analog-to-digital converters. In the second chip, all blocks from the low-noise amplifier to the A/D converters are placed on the same die. In that case, an excellent isolation is required between rail-to-rail clock signals and the sensitive RF input. | ||
| 588 | 0 | |a Print version record. | |
| 650 | 0 | |a Integrated circuits |x Design and construction. | |
| 650 | 0 | |a Broadband communication systems |x Equipment and supplies. | |
| 650 | 0 | |a Radio circuits |x Design and construction. | |
| 650 | 0 | |a Radio |x Transmitter-receivers |x Equipment and supplies |x Design and construction. | |
| 650 | 7 | |a Broadband communication systems |x Equipment and supplies. |2 fast |0 (OCoLC)fst00839150. | |
| 650 | 7 | |a Integrated circuits |x Design and construction. |2 fast |0 (OCoLC)fst00975545. | |
| 650 | 7 | |a Radio circuits |x Design and construction. |2 fast |0 (OCoLC)fst01087292. | |
| 650 | 7 | |a Radio |x Transmitter-receivers |x Equipment and supplies |x Design and construction. |2 fast |0 (OCoLC)fst01087153. | |
| 776 | 0 | 8 | |i Print version: |a Pärssinen, Aarno. |t Direct conversion receivers in wide-band systems. |d Boston : Kluwer Academic Publishers, ©2001 |w (DLC) 2001050574. |
| 830 | 0 | |a Kluwer international series in engineering and computer science ; |v SECS 655. | |
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