A pragmatic approach to multi-user spatial multiplexing

We suggest a new approach for spatial multiplexing in a narrowband system with several access points serving a number of mobile terminals. In contrast to previously suggested algorithms, this approach is formulated based on a systems perspective, generalizing earlier algorithms for jointly optimal beamforming and power control. Since global channel knowledge is required, the algorithm is mainly intended for system simulations where it provides a benchmark for the performance of any spatial multiplexing scheme with equal rate on the spatial channels.