Maximum sum-rate linear beamforming strategies for downlink TDD MC-CDMA systems

摘要

In this paper we derive an iterative joint precoding and power allocation method for downlink MC-CDMA systems with multiple transmit antennas at the base station, which solves the maximum sum-rate problem, i.e. maximizes the system throughput under a constraint on the overall transmit power. It is seen that the proposed joint precoding and power control solution gives a great performance advantage over suboptimal solutions based on the Moore-Penrose, when at the base station only one antenna is used.