State Key Laboratory of Integrated Services Networks Xidian University Xi’an 710071 China;
State Key Laboratory of Integrated Services Networks Xidian University Xi’an 710071 China;
State Key Laboratory of Integrated Services Networks Xidian University Xi’an 710071 China;
State Key Laboratory of Integrated Services Networks Xidian University Xi’an 710071 China;
OAM; UCA; concentric UCAs; RowComm; mode-decomposition; multiplexing-detection,co-mode successive interference cancellation; power allocation;