Transmission solutions and architectures for heterogeneous networks built as C-RANs. - Zere Ghebretensae; Kim Laraqui; Stefan Dahlfort; Filippo Ponzini; Luca Giorgi; Stefano Stracca; Jingjing Chen; Yinggang Li; Jonas Hansryd; Andrew R. Pratt (CHINACOM, 2012)