Common use of Conclusions and Discussion Clause in Contracts

Conclusions and Discussion. In this subsection, a starting point has been the maximization of the system level gains under ideal conditions, in particular assuming ideal CSI. Some first steps were taken to understand the limitations and requirements regarding channel estimation as well as for CSI feedback. Without suitable enhancements, a significant part of the system level gains under ideal conditions are easily lost, but for some well justified enhancements for channel estimation, feedback, robust precoding in combination with fine tuning of the CoMP scheduler, a significant part of the gains is achievable even under real world conditions. The here developed IMF-A framework for JT CoMP was introduced and elaborated on in Subsection 5.1.1, with the design principles: 1. use of enlarged clusters of coordinated cells, with means for inter-cluster interference suppression (interference floor shaping), 2. scheduling and beamforming design is made independently at each cellular base station, 3. use of coherent robust linear precoding, with single-cell transmission or non-coherent joint transmission as fallback modes, and 4. use of prediction of channel state information.