Uplink ad hoc cooperation by distributed equalization under a constrained backhaul

Theoretical analysis of base station cooperation methods have proven their potential for solving interference limitation in today´s cellular networks by showing immense capacity and fairness gains. However, a major downside of base station cooperation is the additional information exchanged amongst base stations which has been the motivation for recent work on backhaul efficient cooperation schemes. In this paper, we introduce a method that is based on distributed equalization and joint decoding, which has several benefits when compared to other kinds of distributed antenna systems. On the one hand, no additional exchange of channel information is required and on the other, distributed equalization provides an elegant solution for backhaul efficient cooperation with outdated channel knowledge at the scheduler.