Patent ID: 8503502

Claim:
A radio communication system comprising: a plurality of transmission devices that spread a frequency of a transmitting signal, allocate the frequency spread signal to discrete frequencies, and apply spectrum shaping including at least clipping to the allocated signal for transmission; and a reception device that receives the transmitting signal; wherein the reception device generates transmission path information related to propagation path characteristics between all the transmission devices and the reception device and clipping information related to a clipping rate of spectrum adaptively controlled according to the propagation path characteristics based on the transmitting signal to feed back to the transmission devices, and the transmission device adaptively controls the clipping rate according to the propagation path characteristics between all the transmission devices and the reception device, based on the transmission path information and the clipping information which are fed back, so as to apply spectrum shaping, and performs multiplexing by frequency, wherein the transmission device does not cause spectrum to overlap with a transmitting signal of other transmission device by clipping.