Skip to search boxSkip to navigationSkip to main content

Code orthogonality for wideband CDMA systems with multiple transmit antennas

  • Ben Allen
    ,
  • Mythri Hunukumbure
    ,
  • Mark Beach
Research Output: Contribution to journal Article Peer-review

Abstract

Code orthogonality is a useful indicator in determining the performance of the synchronous downlink of third generation Universal Mobile Telecommunication System (UMTS) Terrestrial Radio Access systems. In this paper, previous work on quantifying code orthogonality for single-antenna [or single-input single-output (SISO)] links is extended to fixed beamforming and transmit diversity schemes. Code orthogonality estimates from real measured channel data are extracted for typical outdoor radio environments. The results indicate that the spatial conditioning of fixed beamforming radio channels generally improves code orthogonality. In contrast, full code-rate transmit diversity schemes degrade code orthogonality.

Publication Information

Output type

Research Output: Contribution to journal Article Peer-review

Original language

English

Pages from-to (Number of pages)

Pages 3749-3756

Journal (Volume, Issue Number)

IEEE Transactions on Vehicular Technology (Volume 56, Issue 6)

Publication milestones

  • Published - 01/11/2007

Publication status

Published - 01/11/2007

ISSN

0018-9545

External Publication IDs

  • handle.net: 10547/272976
  • Scopus: 36749085328

Access to documents

Publication metrics