Estimation of Time-Domain Calibration Parameters to Restore MIMO-TDD Channel Reciprocity
Boris Kouassi, Irfan Ghauri, Luc Deneire · 2012
Spatial interweave cognitive radio opportunistically exploits spatial holes to enable transmission of secondary systems. The latter form carefully aligned spatial beams so that there is no interference to the primary system. This requires acquisition of the (spatio-temporal) channel state (CS) betwe