Bit-level pipelinable general and fixed coefficient digit-serial/parallel multipliers based on shift-accumulation

In this work, we introduce a novel approach to digit-serial/parallel multiplication. This general class of multipliers is based on shift-accumulation which also makes the approach suitable for implementation of shift-accumulators in distributed arithmetic. As a variable in the design process, the maximal number of cascaded full-adders can be selected. Thus, it is possible to, as a special case, obtain a bit-level pipelined multiplier. Both general and fixed coefficient multiplication is considered. The hardware complexity is low compared with other approaches.