Effect of co-phasing diversity on CDMA downlink capacity

F Tong, R C Atkinson, I Glover, Stephen R Pennock, Peter R Shepherd

Research output: Contribution to journalArticlepeer-review


The impact of distributed antennas using co-phasing transmission diversity on downlink CDMA channels is examined. An expression is derived that demonstrates that uniform downlink signal-to-interference ratio across users can be achieved by appropriately weighting the distribution of transmit powers across distributed antennas. The capacity of a downlink CDMA system employing distributed antennas with optimum power allocation is then found by simulation.
Original languageEnglish
Pages (from-to)786-788
Number of pages3
JournalElectronics Letters
Issue number13
Publication statusPublished - 19 Jun 2008


  • downlink CDMA channels
  • uniform downlink signal-to-interference ratio
  • CDMA downlink capacity
  • co-phasing transmission diversity
  • optimum power allocation
  • distributed antennas


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