Filter processing device, filter processing method, communication system, and recording medium
AssigneeNEC Corporation
InventorEita Kobayashi
Life of this patent
Estimating the term…
Abstract
A filter processing device that includes an address control unit that specifies, based on the offset amount of a light source frequency and a subcarrier center point for each subcarrier, a write address and a read address for a plurality of items of data included in Fourier transform data based on an optical signal, and a storage unit in which a plurality of items of data are written to the write address specified by the address control unit and in which data is read out from the read address specified by the address control unit. The address control unit specifies the write address and the read address so that compensation for the offset amount and separation of the subcarrier are performed by the same storage unit.
Claims13
A filter processing device comprising:
- a storage in which a plurality of items of data are written to a write address that has specified, and in which the data is read out from a read address that has specified;
- a first memory storing instructions;
- and
- a first processor connected to the at first memory and configured to execute the instructions to:
- specify, based on an offset amount of a light source frequency and a subcarrier center point for each subcarrier, the write address and the read address for the plurality of items of the data included in Fourier transform data based on an optical signal;
- specify the write address and the read address so that compensation for the offset amount and separation of the subcarrier are performed by the same storage.
A filter processing method executed by a computer, the method comprising:
- specifying in a storage, based on an offset amount of a light source frequency and a subcarrier center point for each subcarrier, a write address and a read address for a plurality of items of data included in Fourier transform data based on an optical signal so that compensation for the offset amount and separation of the subcarrier are performed by a same storage;
- writing the plurality of items of data to the specified write address of the storage;
- and
- reading out the data from the specified read address of the storage.
A non-transitory recording medium storing a program for causing a computer to execute:
- a process of specifying in a storage means, based on an offset amount of a light source frequency and a subcarrier center point for each subcarrier, a write address and a read address for a plurality of items of data included in Fourier transform data based on an optical signal so that compensation for the offset amount and separation of the subcarrier are performed by a same storage;
- a process of writing the plurality of items of data to the specified write address of the storage;
- and
- a process of reading out the data from the specified read address of the storage.
Dependencies are inferred from the claim text.