Patent ID: 11901980
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. A wireless communication system which includes a radio transmitting station apparatus having a plurality of antennas and a radio receiving station apparatus having an antenna and which performs transmission and reception of a radio signal with a single carrier, wherein:
the radio receiving station apparatus or the radio transmitting station apparatus includes
a communication path estimator configured to estimate a communication path matrix based on a training signal;
the radio receiving station apparatus or the radio transmitting station apparatus includes
a transmission weight calculator configured to transform the communication path matrix estimated by the communication path estimator into a frequency domain, which calculates a pseudo inverse matrix for each frequency with respect to the transformed frequency domain communication path matrix, and which transforms the calculated pseudo inverse matrix into a time domain and adopts as a transmission weight matrix; and
the radio transmitting station apparatus includes
a transmission beam formation processor configured to form a transmission beam based on the transmission weight matrix.