A multi-carrier receiver, multi-carrier transmitter and a multi-carrier transceiver system are provided. The multi-carrier receiver includes a first processing unit, a router and a second processing unit. The first processing unit has M first processing paths, applies intensity processing on at least a RF signal for outputting sub-carrier signals. The router has M input terminals and N output terminals, where the M input terminals are respectively coupled to the M first processing paths and receive the sub-carrier signals. The router outputs the sub-carrier signals to the N output terminals and the received signal at each output terminal of the router includes the sub-carrier signal at each input terminal. The second processing unit has N second processing paths respectively coupled to the N output terminals for demodulating the sub-carrier signals and applies an analog-to-digital conversion on the demodulated signals for generating digital signals, where M and N are greater than 0.