A QoS-Aware Interference Balancing Scheme for Multiuser MIMO Systems

Free registration required

Executive Summary

In multiuser MIMO systems, the achievable system data rate as well as Quality of Service (QoS) of individual users is limited by the Inter-User Interference (IUI). The interference balancing issue via power allocation can be usually formulated as a non-convex optimization problem which will become more intractable with non-convex QoS constraints. In this paper, the authors focus on the challenging QoS-aware optimal power allocation problem, aiming to maximize the system sum rate and guarantee the users' minimum data rates. As a result, a "Posynomial Approximations based on Single Condensation" (PASC) strategy is proposed which transforms the underlying problem to a series of tractable Geometric Programming (GP) problems through single condensation scheme.

  • Format: PDF
  • Size: 250.4 KB