Patent ID: 7545770

Claim:
A radio communication system that is provided with a transmitting part radio communication apparatus and a receiving part radio communication apparatus, in which an insertion interval of a known reference signal inserted into data that is propagated in a communication between said transmitting part radio communication apparatus and said receiving part radio communication apparatus is variable, wherein said receiving part radio communication apparatus has a known reference signal insertion interval acquiring section that acquires a first insertion interval of said known reference signal by using a received signal from said transmitting part radio communication apparatus, wherein said transmitting part radio communication apparatus has a known reference signal insertion interval receiving section that receives the first insertion interval of said known reference signal from said receiving part radio communication apparatus, and wherein said transmitting part radio communication apparatus has a known reference signal insertion interval acquiring section that acquires a second insertion interval of said known reference signal by using a received signal from said receiving part radio communication apparatus, and wherein said transmitting part radio communication apparatus has a known reference signal insertion interval determining section that determines a third insertion interval of said known reference signal to be inserted into said data by using the first and second insertion intervals of said known reference signal.