Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Modulation for interference avoidance on the AWGN channel
KTH, Skolan för elektro- och systemteknik (EES), Kommunikationsteori.ORCID-id: 0000-0002-9709-0713
2006 (engelsk)Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
Abstract [en]

Theoretic results have shown that the capacity of a channel does not decrease if the receiver observes the transmitted signal in the presence of interference, provided that the transmitter knows this interference non-causally. That is, if the transmitter has non-causal access to the interference, by using proper precoding this interference could be “avoided” (as if it were not present) under the same transmit power constraint. It indicates that lossless (in the sense of capacity) precoding is theoretically possible at any signal-to-noise-ratio (SNR). This is of special interest in digital watermarking, transmission for ISI channels as well as for MIMO broadcast channels. Recent research has elegantly demonstrated the (near) achievability of this “existence-type” result, while the complexity is notable. An interesting question is what one can do when very little extra complexity is permitted. This thesis treats such special cases of this problem in order to shed some light on this question. In the AWGN channel with additive interference, an optimum modulator is designed under the constraint of a binary signaling alphabet with binary interference.Tomlinson-Harashima precoding (THP), which is originally proposed for ISI channels, is improved by picking up optimized parameters and then taken as a benchmark. Simulation results show that the Optimum Modulator always outperforms the THP with optimized parameters. The difference in performance, in terms of mutual information between channel input and output as well as coded bit error rate with Turbo codes, is significant in many scenarios.

sted, utgiver, år, opplag, sider
2006. , s. 61
Serie
EES Examensarbete / Master Thesis ; XR-EE-KT 2006:003
Emneord [en]
Costa precoding, dirty paper coding, interference avoidance, Tomlinson-Harashima precoding
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-44066OAI: oai:DiVA.org:kth-44066DiVA, id: diva2:450183
Fag / kurs
Communication Theory
Utdanningsprogram
Master of Science - Wireless Systems
Presentation
2006-02-17, Seminar room on floor 3, Osquldas vag 10, Stockholm, 13:45 (engelsk)
Uppsök
Technology
Veileder
Examiner
Tilgjengelig fra: 2011-11-22 Laget: 2011-10-19 Sist oppdatert: 2022-06-24bibliografisk kontrollert

Open Access i DiVA

master thesis(640 kB)1336 nedlastinger
Filinformasjon
Fil FULLTEXT01.pdfFilstørrelse 640 kBChecksum SHA-512
e910961bb235802083c53077478a0848a3de90c9f587f287376d98c75571b618470c1000f97e3ddc616813b9fc4e344bf5e0f02b8208843bf072531ffdcafa14
Type fulltextMimetype application/pdf

Søk i DiVA

Av forfatter/redaktør
Du, Jinfeng
Av organisasjonen

Søk utenfor DiVA

GoogleGoogle Scholar
Totalt: 1336 nedlastinger
Antall nedlastinger er summen av alle nedlastinger av alle fulltekster. Det kan for eksempel være tidligere versjoner som er ikke lenger tilgjengelige

urn-nbn

Altmetric

urn-nbn
Totalt: 290 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf