Patent ID: 8422603

Claim:
A signal receiving apparatus for receiving signals, said signal receiving apparatus comprising: a correlation-value computation section configured to sequentially compute a correlation value representing a correlation between a received signal and a series of known symbols while sliding said series of known symbols for every symbol included in said received signal; a maximum-value detection section configured to detect a largest correlation value among said correlation values computed by said correlation-value computation section for one frame of said received signal by: comparing each of said correlation values computed by said correlation-value computation section with a threshold value determined in advance in order to detect a correlation value greater than said threshold value, setting a maximum correlation value at a correlation value detected as a correlation value greater than said threshold value, producing a result of a determination as to whether or not a correlation value, which is computed after a correlation value greater than said threshold value is detected, is greater than said maximum correlation value, updating said maximum correlation value with a specific correlation value determined to be greater than said maximum correlation value if said determination result indicates that said specific correlation value is greater than said maximum correlation value; and a correlation-value storage section configured to store each of the correlation values at one of a predetermined number of storage locations, before and after said largest correlation value is detected by said maximum-value detection section, by adoption of a ring-buffer method until a correlation value that is greater than said threshold value is detected.