Patent ID: 7215979

Claim:
A transmitter apparatus for transmitting an information symbol sequence from a first radio station having an array antenna having M (M is a positive integer and M>1) elements to a second radio station, the transmitter apparatus comprising: vector control means for producing a plurality of N (N is a positive integer) dimensional vectors, where N≦M; and vector multiplexing means for producing an M number of vector-multiplexed symbol sequences multiplexed by multiplying the plurality of N dimensional vectors by a plurality of symbol sequences containing the information symbol sequence and for transmitting the vector-multiplexed symbol sequences through the array antenna; wherein the vector control means produces the plurality of N dimensional vectors based on a propagation parameter corresponding to a propagation channel between the first radio station and the second radio station independent of other propagation channels, and the vector control means produces the plurality of N dimensional vectors such that, at the second radio station, at least one symbol sequence containing the information symbol sequence is received from among the plurality of symbol sequences and other symbol sequences are canceled.