可以看到,并行的方案电路深度比序列化方法要浅,计算更加高效。 进一步,思考前缀和 (prefix sum),即对于字符串,其前缀和为,而也可以并行计算,逻辑示意图如下: 可以看到,在第二层可以并行计算三个,而的计算结果可以同时加入和的计算。其他位置类似。 1.2 Carry Look Ahead Ad...
Parallel Prefix Adders have been established as the most efficient circuits for binary addition. The binary adder is the critical element in most digital circuit designs including digital signal processors and microprocessor data path units. The final carry is generated ahead to the generation of the...
The present work focused on designing of high performance low power 8-bit parallel prefix adder structure. For improving the speed and to reduce the power, we have reduced the static power and dynamic power. The design is simulated using Xilinx 13.2 ISE and implemented on Spartan 3 FPGA Board...
本文将对并行前缀加法器（Parallel Prefix Adder, PPA）进行深入探讨，以优化布尔状态下2-输入加法的效率，并在安全多方计算中的算术分享与布尔分享转化中发挥作用。首先，我们从全加器（Full Adder, FA）入手，介绍其构建方法与优化。全加器用于处理1比特的加法，其输入包括两个数和低位进位，输出为本位...
Parallel-prefix computation provides a highly efficient solution to binary addition problem. This paper proposes an advanced design based on parallel-prefix Ling adder. In order to further improve the Ling adder's performance, the preprocessing block and carry propagation block are all optimized to re...
摘要: We consider sparsity, fanout, and radix as three dimensions in the design space of regular parallel prefix adders and present a unified formalism to describe such structures. Keywords: parallel prefix adder, Kogge-Stone adder, Han-Carlson adder, Brent-Kung adder....
In this paper, we first propose a new architecture of zero-deficiency prefix adder dubbed Z(d), which provably has the minimal depth among all kinds of zero-deficiency prefix adders. We then design a 64-bit prefix adder Z64, which is derived from Z(d)|d=8, and compare it against ...
High Speed RNS-To-Binary Converter Design Using Parallel Prefix Adders In this paper, the implementation of residue number system reverse converters based on hybrid parallel- prefix adders is analyzed. The parallel prefix adder provides high speed and reduced delay arithmetic operations but it is not...
In IC design environment, the chip performance is influence by design environment, schematic and sizing parameter of the transistor. Therefore, this study is an attempt to investigate the performance of 4-bit Brent Kung Parallel Prefix Adder using Silvaco EDA Tools and targeted to 0.18um Silterra ...
Design of High-Speed Low-Power Parallel-Prefix VLSI Adders Parallel-prefix adders offer a highly-efficient solution to the binary addition problem. Several parallel-prefix adder topologies have been presented that exhibit various area and delay characteristics. However, no methodology has been r... ...