Implementing FIR filters with distributed arithmetic

A new approach for implementing FIR filters with distributed arithmetic is presented. This approach uses a RAM to store the input sequences, utilizes a partitioned ROM to store the combinational values of the filter coefficients, and provides the arrangement techniques for adders which are used for accumulating the partial product and the sum. The proposed approach results in a very low storage requirement and enables a cost-effective implementation of fast high-order FIR filters.