Fusion Frames and the Restricted Isometry Property
  We will show that tight frames satisfying the restricted isometry property give rise to nearly tight fusion frames which are nearly orthogonal and hence are nearly equi-isoclinic. We will also show how to replace parts of the RIP frame with orthonormal sets while maintaining the RIP property. 
Bernhard Bodmann, Jameson Cahill and Peter G. Casazza
math.FA