| http://www.w3.org/ns/prov#value | - Also, in the reference signal inserting circuit 15, a reference signal indicated by two values which each are a complex number, a real number or an imaginary number is generated, and one value (one complex number, one real number or one imaginary number) of the reference signal is inserted into a digital information signal carried by a carrier wave of the frequency +Wn for each symbol as a piece o
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