Patent ID: 7580447

Claim:
A reception device comprising: n number of reception antennas for receiving spread spectrum signals transmitted from a transmission device via m number of transmit antennas, where m is an integer greater than or equal to 2 and n is an integer greater than or equal to 2; a path selection unit for selecting a path for de-spreading the signal received by the reception antennas and outputting a selection result as a path selection signal; and K n number of de-spreader units for de-spreading the signal received by the reception antennas based on the path selection signal and outputting the de-spread signals, where K n is an integer greater than or equal to 1, n represents an n-th reception antenna, and 1≦n≦K n , wherein the path selection unit calculates a correlation value of propagation paths among the m number of transmit antennas and the n number of reception antennas and wherein, if the calculation result is smaller than a predetermined reference value, the path selection unit independently selects K n number of paths having a largest power at each of the n number of reception antennas, and wherein, if the calculation result is greater than the predetermined reference value, the path selection unit preferentially selects K n number of paths having a low correlation with paths identified by the other reception antennas, at each of the n number of reception antennas.