Joint Transmitter-Receiver Design for the Downlink Multiuser Spatial Multiplexing MIMO System

TL;DR

This paper introduces a joint transmitter-receiver design for multiuser MIMO systems that optimizes power distribution to meet SINR constraints and reduce interference, enhancing system performance and flexibility.

Contribution

It presents a novel algorithm for joint transmitter-receiver design that minimizes power while satisfying SINR constraints, allowing flexible power adjustment among users.

Findings

Algorithm satisfies post-SINR constraints

Enables power adjustment among users

Reduces interference to edge users

Abstract

This paper proposes a joint transmitter-receiver design to minimize the weighted sum power under the post-processing signal-to-interference-and-noise ratio (post-SINR) constraints for all subchannels. Simulation results demonstrate that the algorithm can not only satisfy the post-SINR constraints but also easily adjust the power distribution among the users by changing the weights accordingly. Hence the algorithm can be used to alleviates the adjacent cell interference by reducing the transmitting power to the edge users without performance penalty.