Signal identification device
AssigneeKabushiki Kaisha Toshiba
InventorShoichi Sasahara
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Abstract
A signal identification device identifies the carrier mode applied to a received signal that has control information embedded therein by extracting the control information from the received signal, generating multiple reference signals, each of the reference signals corresponding to one of multiple formulations of control information for one or more carrier transmission modes, performing a correlation operation on the control information against each of the reference signals, and determining the carrier mode based on results of the correlation operations.
Claims5
A method of determining a carrier mode applied to a received signal that has control information embedded therein, comprising:
- extracting the control information from the received signal;
- generating first and second sets of reference signals, each of the reference signals of the first set corresponding to one of multiple formulations of control information for a single carrier transmission mode and each of the reference signals of the second set corresponding to one of multiple formulations of control information for a multi-carrier transmission mode;
- determining a first correlation value by performing a first correlation operation on the control information against each of the reference signals in the first set;
- determining a second correlation value by performing a second correlation operation on the control information against each of the reference signals in the second set;
- selecting the greater of the first and second correlation values as a selected correlation value;
- determining a transmission mode corresponding to the selected correlation value as the carrier mode;
- comparing the selected correlation value with a predetermined threshold;
- and
- outputting a result of the comparing as an indication of the reliability of the control information.
Dependencies are inferred from the claim text.