Distributed uplink scheduling and rate control in cdma2000 using adaptiveantenna arrays

摘要

Distributed uplink scheduling and rate control in CDMA networks are considered in the case of adaptive antenna arrayspresent at the base station. The system model with omnidirectional antennas is generalized to the case where adaptive antennaarrays are deployed. Rate control in a probabilistic manner is investigated. Long-term control by the base station through tokenbucket constraints is incorporated in the system. Monte Carlo simulation results show considerable improvement when adap-tive antenna arrays are used. Optimization of the rate transition probabilities is treated in the special case of on–off scheduling.