RECEIVER INCLUDING NOISE REDUCTION FUNCTION, METHOD OF REDUCING NOISE, PROGRAM, AND INTEGRATED CIRCUIT

摘要

PROBLEM TO BE SOLVED: To solve the problem wherein it is difficult to remove peak noise by an existing method when a plurality of antennas receive a signal, where a strong peak noise of a specific frequency is mixed with a signal subjected to complex mixed modulation, and circuit size and cost will increase, even if an existing method is applied.;SOLUTION: In a receiver 100, including a noise reduction function, average calculation units 22a to 22c acquire an average signal Ave_Sig where a noise component characteristic to the antenna is suppressed by average processing, difference calculating units 25a to 25c subtract the average signal Ave_Sig from each of AC discretization signals AC_Sig[a] to AC_Sig[c], thereby difference signals Diff_Sig[a] to Diff_Sig[c] where noise components characteristics to the antenna appear clearly are calculated. Then, a difference subtracting unit 27a subtracts the difference signals Diff_Sig[a] to Diff_Sig[c] from discretization signals Sig[a] to Sig[c], thus acquiring output signals Sig_out[a] to Sig_out[c] where noise components characteristics to the antenna are reduced.;COPYRIGHT: (C)2011,JPO&INPIT