Time-division decimation filter bank and time-division decimation filtering method

A time-division (TD) decimation filter bank, comprising:

• a half decimation filter unit, operated at a system clock for receiving an input data string, and taking 2N clock periods as an operation-period unit, N≧2, wherein the half decimation filter unit receives the input data string and receives a plurality of feedback data of the half decimation filter unit by TD, so as to distribute the received data into the 2N clock periods for filtering and decimation and outputting by TD.

A time-division (TD) decimation filter bank, comprising:

• a first half decimation filter unit, operated at a system clock for receiving a first-stage input data string, wherein each data in the first-stage input data string comprises a first part data and second part data, during each odd clock period of the system clock, the first part data is filtered and decimated by half in frequency for outputting, and during each even clock period, the second part data is filtered and decimated by half in frequency for outputting;
• and
• a second half decimation filter unit, operated at the system clock, and taking 2N clock periods as an operation-period unit, N≧2, wherein the second half decimation filter unit receives an output of the first half decimation filter unit and receives a plurality of feedback data of the second half decimation filter unit by TD, so as to distribute the received data into the 2N clock periods for filtering and decimation and outputting by TD.

A time-division (TD) decimation filtering method, comprising:

• using a first half decimation filter unit operated under a system clock to receive a first-stage input data string, wherein each data in the first-stage input data string comprises a first part data and second part data, during each odd clock period of the system clock, the first part data is filtered and decimated by half in frequency for outputting, and during each even clock period, the second part data is filtered and decimated by half in frequency for outputting;
• and
• using a second half decimation filter unit to operate under the system clock, and taking 2N clock periods as an operation-period unit, N≧2, wherein the second half decimation filter unit receives an output of the first half decimation filter unit and receives a plurality of feedback data of the second half decimation filter unit by TD, so as to distribute the received data into the 2N clock periods for filtering and decimation and outputting by TD.

A time-division (TD) decimation filter bank, comprising:

• a half decimation filter unit, operated at a system clock, and taking 24 clock periods as an operation-period unit, wherein the half decimation filter unit receives an input data string and receives a plurality of feedback data of the half decimation filter unit by TD, so as to distribute the received data into the 24 clock periods for filtering and decimation and outputting by TD.