Link and System Level Performance of Multiuser Detection CDMA Uplink

  • Authors:
  • Antti Toskala;Harri Holma;Seppo Hämäläinen

  • Affiliations:
  • Nokia Telecommunications, New Radio Systems, P.O. Box 300, FIN-00045 Nokia Group, Finland E-mail: antti.toskala@ntc.nokia.com, harri.holma@ntc.nokia.com;Nokia Telecommunications, New Radio Systems, P.O. Box 300, FIN-00045 Nokia Group, Finland E-mail: antti.toskala@ntc.nokia.com, harri.holma@ntc.nokia.com;Nokia Research Center, P.O. Box 407, FIN-00045 Nokia Group, Finland E-mail: seppo.hamalainen@research.nokia.com

  • Venue:
  • Wireless Personal Communications: An International Journal
  • Year:
  • 1998

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Abstract

The link level performance and the cellular systemcapacity in the uplink direction of a CDMA cellularsystem utilising multiuser detection base stationreceivers is analysed by simulation. In the receiver,parallel multistage multiuser detection is employedtogether with two-antenna diversity reception and fastclosed-loop power control. A system level simulator isbuilt to utilise the link level simulation results andto show the increase in cellular capacity obtained byusing multiuser detection. The capacity is studied inurban micro and macro-cell environments utilising thechannel models developed in the European CODITproject. The modelling of the environment specific andCDMA specific features is considered in the systemsimulator. The system level simulator is calibratedwith analytical capacity calculations.