cdma2000 1×EV-DO forward link throughput sensitivity to diversity antenna correlation

This paper addresses the effects of the fade correlation between the receiver antennas of an access terminal (AT) on the forward link sector capacity of a cdma2000 1×EV-DO system. Traditionally, high fade correlation has been considered to be a significant source of capacity degradation for fixed rate wireless data/voice modems due to the lack of diversity and hence the increased variance of the received signal power which results in an increased fade margin or power control set point. The 1×EV-DO system, due to its advanced link adaptation, variable rate control, and multiuser diversity mechanisms, possesses inherent robustness towards such a lack of diversity. This point is demonstrated in this paper by network level simulations as well as by field data.