Vector detection techniques with moderate complexity:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
Düsseldorf
VDI-Verl.
2003
|
| Ausgabe: | Als Ms. gedr. |
| Schriftenreihe: | Fortschritt-Berichte VDI
Reihe 10, Angewandte Informatik ; 724 |
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | VI, 187 S. graph. Darst. : 21 cm |
| ISBN: | 3183724103 |
Internformat
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Datensatz im Suchindex
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| adam_text | FORTSCHRITT-BERICHTE VDI
REIHE 10
INFORMATIK/
KOMMUNIKATION
NR. 724
DIPL.-LNG. ACHIM ENGELHART,
ULM
VECTOR DETECTION
TECHNIQUES WITH
MODERATE COMPLEXITY
VDI VERLAG
CONTENTS
1. INTRODUCTION 1
2. THE DISCRETE-TIME CHANNEL MATRIX AND CONVENTIONAL RECEIVER STRUCTURES
4
2.1 DS-CDMA SYSTEM MODEL 4
2.1.1 GENERAL DESCRIPTION 4
2.1.2 PACKET NOTATION 8
2.2 MULTICARRIER TRANSMISSION 9
2.2.1 OFDM SYSTEM MODEL, TIME-INVARIANT CASE 9
2.2.2 CONVENTIONAL OFDM DETECTION 12
2.2.3 OFDM AND MATCHED FILTERING 13
2.2.4 BFDM SYSTEMS, DETECTOR CONCEPTS 16
2.2.5 TIME-VARIANT CASE 18
2.3 DESCRIPTION OF SYSTEMS WITH MULTIPLE RECEIVE ANTENNAS 25
2.4 CONVENTIONAL VECTOR DETECTION METHODS 28
2.4.1 SINGLE-USER DETECTOR 28
2.4.2 DECORRELATING DETECTOR 29
2.4.3 MINIMUM MEAN-SQUARE-ERROR DETECTOR 29
2.4.4 MULTISTAGE DETECTOR AND TWOSTAGE DETECTOR 30
2.4.5 OPTIMUM DETECTOR 30
2.5 SUMMARY 31
3. VECTOR DETECTION BY NONLINEAR OPTIMIZATION - WOLFE S METHOD 32
3.1 LINEAR OPTIMIZATION 33
3.2 VECTOR DETECTION WITH WOLFE S METHOD 35
3.2.1 LAGRANGIAN AND KUHN-TUCKER CONDITIONS 36
3.2.2 BIG M METHOD 38
3.3 COMPUTATIONAL COMPLEXITY OF WOLFE S METHOD 40
3.4 SUMMARY 42
4. VECTOR DETECTION WITH ALGORITHMS BASED ON RECURRENT NEURAL NETWORKS
43
4.1 CLASSICAL HOPFIELD NEURAL NETWORK 47
4.1.1 DYNAMICAL EVOLUTION OF HOPFIELD NETWORKS WITH PARALLEL UPDATE . .
48
4.1.2 DYNAMICAL EVOLUTION OF HOPFIELD NETWORKS WITH SERIAL UPDATE ... 55
4.2 RNN WITH MULTITHRESHOLD FEEDBACK 62
4.3 RNN WITH SOFT FEEDBACK 69
4.4 RNN USED FOR VECTOR DETECTION 83
4.5 STOCHASTIC HOPFIELD NEURAL NETWORK 88
V
CONTENTS
4.6 RNN WITH SOFT FEEDBACK USED FOR VECTOR DETECTION -. . . 91
4.6.1 RNN WITH SOFT FEEDBACK, LINEAR INCREASE OF THE ACTIVATION FUNC-
TION S SLOPE 93
4.6.2 RNN WITH SOFT FEEDBACK, ANALYTICAL COMPUTATION OF THE ACTIVATION
FUNCTION S SLOPE 93
4.7 R.NN VECTOR DETECTION WITH SUBSEQUENT LOCAL SEARCH 108
4.8 STOCHASTIC HOPFIELD NEURAL NETWORK WITH SOFT FEEDBACK 109
4.9 COMPUTATIONAL COMPLEXITY OF THE RNN VECTOR DETECTION SCHEMES ILL
4.10 SUMMARY 113
5. SIMULATION RESULTS 119
5.1 SIMULATION SCENARIOS 119
5.1.1 SERIAL TRANSMISSION OF PACKETS 119
5.1.2 BFDM TRANSMISSION 120
5.1.3 DS-CDMA TRANSMISSION 121
5.2 CONVERGENCE OF THE RNN VECTOR DETECTION SCHEMES 125
5.2.1 RNN/SOFT, CONSTANT SLOPE OF THE ACTIVATION FUNCTION 125
5.2.2 RNN/SOFT, LINEAR INCREASE OF THE ACTIVATION FUNCTION S SLOPE . . .
. 129
5.2.3 SHN, RNN/SOFT WITH ANALYTICAL COMPUTATION OF THE SLOPE,
ANDSHN/SOFT 135
5.3 SIMULATION RESULTS OF THE EXAMINED DETECTORS 137
5.3.1 PARAMETERS OF THE VECTOR DETECTORS USED IN THE SIMULATIONS ....
137
5.3.2 SERIAL TRANSMISSION OF PACKETS 139
5.3.3 BFDM TRANSMISSION : 141
5.3.4 DS-CDMA TRANSMISSION 144
5.4 SUMMARY 152
6. SUMMARY AND CONCLUSIONS 154
A. MATRIX-VALUED CONVOLUTION 156
A.I TIME-INVARIANT MATRIX-VALUED CONVOLUTION 156
A.2 TIME-VARIANT MATRIX-VALUED CONVOLUTION 158
B. TIME-VARIANT MATCHED FILTERING 160
C. PRACTICAL COMPUTATION OF A[K, K] IN BFDM APPLICATIONS 162
D. EQUIVALENCE OF CLASSICAL HOPFIELD NEURAL NETWORKS WITH DIFFERENT
STATE SETS 163
E. NUMERICALLY STABLE COMPUTATION OF ACTIVATION FUNCTIONS 165
F. MATHEMATICAL NOTATION AND LIST OF SYMBOLS 167
BIBLIOGRAPHY 175
VI
|
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| indexdate | 2024-07-09T19:17:57Z |
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| isbn | 3183724103 |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-010503105 |
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| physical | VI, 187 S. graph. Darst. : 21 cm |
| publishDate | 2003 |
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| series | Fortschritt-Berichte VDI |
| series2 | Fortschritt-Berichte VDI : Reihe 10, Angewandte Informatik |
| spelling | Engelhart, Achim Verfasser aut Vector detection techniques with moderate complexity Achim Engelhart Als Ms. gedr. Düsseldorf VDI-Verl. 2003 VI, 187 S. graph. Darst. : 21 cm txt rdacontent n rdamedia nc rdacarrier Fortschritt-Berichte VDI : Reihe 10, Angewandte Informatik 724 Zugl.: Ulm, Univ., Diss., 2003 DS-CDMA (DE-588)4721085-0 gnd rswk-swf Berechnungskomplexität (DE-588)4134751-1 gnd rswk-swf Mehrträgerverfahren (DE-588)4509481-0 gnd rswk-swf Neuronales Netz (DE-588)4226127-2 gnd rswk-swf Mehrbenutzer-Informationstheorie (DE-588)4114553-7 gnd rswk-swf Vektorquantisierung (DE-588)4297551-7 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Mehrträgerverfahren (DE-588)4509481-0 s DS-CDMA (DE-588)4721085-0 s Mehrbenutzer-Informationstheorie (DE-588)4114553-7 s Vektorquantisierung (DE-588)4297551-7 s Berechnungskomplexität (DE-588)4134751-1 s Neuronales Netz (DE-588)4226127-2 s DE-604 Fortschritt-Berichte VDI Reihe 10, Angewandte Informatik ; 724 (DE-604)BV000897204 724 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=010503105&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Engelhart, Achim Vector detection techniques with moderate complexity Fortschritt-Berichte VDI DS-CDMA (DE-588)4721085-0 gnd Berechnungskomplexität (DE-588)4134751-1 gnd Mehrträgerverfahren (DE-588)4509481-0 gnd Neuronales Netz (DE-588)4226127-2 gnd Mehrbenutzer-Informationstheorie (DE-588)4114553-7 gnd Vektorquantisierung (DE-588)4297551-7 gnd |
| subject_GND | (DE-588)4721085-0 (DE-588)4134751-1 (DE-588)4509481-0 (DE-588)4226127-2 (DE-588)4114553-7 (DE-588)4297551-7 (DE-588)4113937-9 |
| title | Vector detection techniques with moderate complexity |
| title_auth | Vector detection techniques with moderate complexity |
| title_exact_search | Vector detection techniques with moderate complexity |
| title_full | Vector detection techniques with moderate complexity Achim Engelhart |
| title_fullStr | Vector detection techniques with moderate complexity Achim Engelhart |
| title_full_unstemmed | Vector detection techniques with moderate complexity Achim Engelhart |
| title_short | Vector detection techniques with moderate complexity |
| title_sort | vector detection techniques with moderate complexity |
| topic | DS-CDMA (DE-588)4721085-0 gnd Berechnungskomplexität (DE-588)4134751-1 gnd Mehrträgerverfahren (DE-588)4509481-0 gnd Neuronales Netz (DE-588)4226127-2 gnd Mehrbenutzer-Informationstheorie (DE-588)4114553-7 gnd Vektorquantisierung (DE-588)4297551-7 gnd |
| topic_facet | DS-CDMA Berechnungskomplexität Mehrträgerverfahren Neuronales Netz Mehrbenutzer-Informationstheorie Vektorquantisierung Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=010503105&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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