System Performance of Transmit Diversity Methods and a Two Fixed-Beam System in WCDMA
2004 (English)In: Wireless personal communications, ISSN 0929-6212, E-ISSN 1572-834X, Vol. 31, no 1-2, 33-50 p.Article in journal (Refereed) Published
Downlink transmit diversity modes for WCDMA together with a two fixed-beam antenna array system are compared relative to the single antenna sectorized system in a radio network simulator. The transmit diversity methods investigated are: space-time transmit diversity and closed-loop mode I transmit diversity. Frequency selective (COST 259) and flat fading channels are considered and their impact to speech-only and data-only services is evaluated. A third service, which highlights the system performance of the various advanced antennas, is also investigated.
The results in this investigation point out that the diversity gain in flat fading channels is substantial. In frequency-selective fading, the benefits of fixed beam systems is encouraging, whereas transmit diversity methods (especially Space-Time Transmit Diversity) is unsatisfactory.
Place, publisher, year, edition, pages
Hingham, MA, USA: Kluwer Academic Publishers , 2004. Vol. 31, no 1-2, 33-50 p.
Computer and Information Science
Research subject SRA - ICT
IdentifiersURN: urn:nbn:se:kth:diva-29515DOI: 10.1007/s11277-004-1633-8OAI: oai:DiVA.org:kth-29515DiVA: diva2:394449
QC 201111152011-02-022011-02-022011-11-15Bibliographically approved