Abstract

Inner product calculations are often required in digital neural computing. The critical path of the inner product of two binary vectors is the carry propagation delay generated from individual product terms. In this work, two novel architectures to arrange digital ratioed compressors are proposed to reduce the carry propagation delay in the critical path. Besides, the carry propagation delay estimation of these compressor building blocks is derived and compared. The theoretical analysis and Verilog simulation both indicate that one of the compressor building blocks we present here might offer a sub-optimal solution for the basic building blocks used in digital hardware realization of the inner product computation.

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