A novel partially redundant Radix-8 booth-coding Multiply-Accumulator
it support SIMD-operation by the mode of sub-word parallelism
also could complete 16 * 16 Signed-Multiply or two 8 * 8 Signed-Multiply. 4:2 compressor is used in Wallace-Reduce Tree and carry-control logic is used to control the carry signal between short vectors.