Effect of co-phasing diversity on CDMA downlink capacity

Tong, F. and Atkinson, R.C. and Glover, I.A. and Pennock, S.R. and Shepherd, P.R. (2008) Effect of co-phasing diversity on CDMA downlink capacity. Electronics Letters, 44 (13). pp. 786-788. ISSN 0013-5194 (https://doi.org/10.1049/el:20080323)

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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.