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System level design and simulation of a PCM voiceband modem compliant with the ITU V.90 standard
| dc.creator | Caraballo, Luis Martin | |
| dc.date.accessioned | 2012-06-07T22:58:40Z | |
| dc.date.available | 2012-06-07T22:58:40Z | |
| dc.date.created | 2000 | |
| dc.date.issued | 2000 | |
| dc.identifier.uri | https://hdl.handle.net/1969.1/ETD-TAMU-2000-THESIS-C368 | |
| dc.description | Due to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to digital@library.tamu.edu, referencing the URI of the item. | en |
| dc.description | Includes bibliographical references (leaves 86-93). | en |
| dc.description | Issued also on microfiche from Lange Micrographics. | en |
| dc.description.abstract | The present work is aimed towards an analysis of the ITU-T V.90 standard. Functionally, the system is divided into three main areas: Constellation Design, Spectral Shaping, and Detection. A signal constellation design algorithm is presented with a very simple structure and very good performance characteristics. The spectral shaping technique used was found to be a version of the LABI; its performance was evaluated by simulation. When working with detection, a hybrid solution between Decision Feedback Equalization (DFE) and Maximum Likelihood Sequence Estimation (MLSE) was developed. The main advantage of this hybrid scheme is that it allows the user to customize the complexity of the decoder to suit requirements of each particular application. Simulation results showed improvements in performance over DFE, particularly in channels with severe distortion levels. | en |
| dc.format.medium | electronic | en |
| dc.format.mimetype | application/pdf | |
| dc.language.iso | en_US | |
| dc.publisher | Texas A&M University | |
| dc.rights | This thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries in 2008. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use. | en |
| dc.subject | electrical engineering. | en |
| dc.subject | Major electrical engineering. | en |
| dc.title | System level design and simulation of a PCM voiceband modem compliant with the ITU V.90 standard | en |
| dc.type | Thesis | en |
| thesis.degree.discipline | electrical engineering | en |
| thesis.degree.name | M.S. | en |
| thesis.degree.level | Masters | en |
| dc.type.genre | thesis | en |
| dc.type.material | text | en |
| dc.format.digitalOrigin | reformatted digital | en |
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