Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Performance Analysis of Spreading Sequences in Radio Channels
Blekinge Institute of Technology, School of Engineering, Department of Signal Processing.
2007 (English)Independent thesis Advanced level (degree of Master (One Year))Student thesisAlternative title
Performance Analysis of Spreading Sequences in Radio Channels (Swedish)
Abstract [en]

In this thesis, we have studied direct sequence spread spectrum based CDMA communication system. We have analyzed CDMA based transmitter and receiver structures operating in Rayleigh fading and additive white Gaussian noise (AWGN) channel characteristics, in which data is transmitted and received. We next focused on spreading sequences used in such systems and analyzed the system performance in the presence of various sequences. We have studied the sequence properties, analyzed their bit error rate (BER) and compared traditional Walsh Hadamard sequences with uni¯ed complex Hadamard transform (UCHT) sequences, modi¯ed UCHT sequences and complex Oppermann sequences. We concluded that complex Oppermann se- quences and some UCHT sequences outperform Walsh Hadamard sequences in asynchronous CDMA systems because of their polyphase characteristics and better correlation properties. Next, we considered the problem of optimization among the sequence sets and showed that optimized subsets perform significantly better as compared to random selection of sequences within a sequence set.

Place, publisher, year, edition, pages
2007. , 63 p.
Keyword [en]
UCHT, modified UCHT, CDMA
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:bth-4759Local ID: oai:bth.se:arkivex4EAEF38CFD714FAEC125732C00443CF8OAI: oai:DiVA.org:bth-4759DiVA: diva2:832107
Uppsok
Technology
Supervisors
Note
0046739783107Available from: 2015-04-22 Created: 2007-08-03 Last updated: 2015-06-30Bibliographically approved

Open Access in DiVA

fulltext(823 kB)222 downloads
File information
File name FULLTEXT01.pdfFile size 823 kBChecksum SHA-512
a74d1f7aa0f339196da74265c2524d7569272ffae791e4506abcbb985daa4b9f5e5eb853cb2e409f1c91e6f4abdf90631d9fc38a656f3b53617b3911ba582190
Type fulltextMimetype application/pdf

By organisation
Department of Signal Processing
Signal Processing

Search outside of DiVA

GoogleGoogle Scholar
Total: 222 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 30 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf