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System for digital multiband filtering

  • US 4,691,292 A
  • Filed: 04/13/1983
  • Issued: 09/01/1987
  • Est. Priority Date: 04/13/1983
  • Status: Expired due to Term
First Claim
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1. In a signal processing system including a signal transmitting system in which a signal processed for transmission is separated by a transmit digital filter means into several subbands, the improvement comprising:

  • means in said transmit digital filter means for generating said subbands including sine and cosine functions, the sine functions for generating every other one of said subbands and the cosine functions for generating the remaining ones of said subbands; and

    wherein said sine and cosine functions are phased to preserve all components of the transmitted signal.

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