公开(公告)号：US07197525B2

公开(公告)日：2007-03-27

申请号：US10389655

申请日：2003-03-14

申请人： Yosef Stein ,  Haim Primo

发明人： Yosef Stein ,  Haim Primo

IPC分类号： G06F17/14 ,  G06F7/38

CPC分类号： G06F17/142

摘要： A system and method of improving signal to noise ration (SNR) in a fixed point fast Fourier transform (FFT/IFFT) generates from sample inputs and a twiddle factor butterfly outputs for each stage; scales the butterfly outputs of this stage from a predicted normalization scale factor to obtain the maximum butterfly output without overflow from this stage; determines from the butterfly outputs of this stage the minimum normalizing exponent for the butterfly outputs of this stage and predicts a normalization scale factor of the next stage from the minimum normalizing exponent of this stage and a stage guard scale value to obtain the maximum butterfly output without overflow from that next stage.

摘要翻译： 在固定点快速傅里叶变换（FFT / IFFT）中提高信噪比（SNR）的系统和方法从采样输入和每个阶段的旋转因子蝶形输出产生; 将该阶段的蝶式输出从预测的归一化比例因子缩放，以获得没有溢出的最大蝶形输出; 从该阶段的蝶形输出确定该阶段的蝶形输出的最小归一化指数，并从该级的最小归一化指数预测下一级的归一化比例因子和级保护比例值，以获得没有 从下一个阶段溢出

公开(公告)号：US06829694B2

公开(公告)日：2004-12-07

申请号：US10131007

申请日：2002-04-24

申请人： Yosef Stein ,  Haim Primo

发明人： Yosef Stein ,  Haim Primo

IPC分类号： G06F1200

CPC分类号： G06F9/345 ,  G06F12/0207

摘要： A reconfigurable parallel look-up table system includes a memory; a plurality of look-up tables stored in the memory; a row index register for holding the values to be looked up in the look-up tables; a column index register for storing a value representing the starting address of the look-up tables stored in the memory; and an address translation circuit responsive to the column index register and the row index register to simultaneously generate an address for each value in the row index register to locate in parallel the function of those values in each look-up table.

摘要翻译： 可重新配置的并行查找表系统包括存储器; 存储在存储器中的多个查找表; 用于保存要在查找表中查找的值的行索引寄存器; 列索引寄存器，用于存储表示存储在存储器中的查找表的起始地址的值; 以及响应于列索引寄存器和行索引寄存器的地址转换电路，以同时为行索引寄存器中的每个值产生一个地址，以平行地定位每个查找表中的那些值的函数。

公开(公告)号：US06766345B2

公开(公告)日：2004-07-20

申请号：US10060699

申请日：2002-01-30

申请人： Yosef Stein ,  Haim Primo ,  Joshua A. Kablotsky

发明人： Yosef Stein ,  Haim Primo ,  Joshua A. Kablotsky

IPC分类号： G06F700

CPC分类号： H03M13/158 ,  G06F7/724

摘要： A Galois field multiplier system includes a multiplier circuit for multiplying two polynomials with coefficients over a Galois field to obtain their product; a Galois field linear transformer circuit responsive to the multiplier circuit for predicting the modulo remainder of the polynomial product for an irreducible polynomial; and a storage circuit for supplying to the Galois field linear transformer circuit a set of coefficients for predicting the modulo remainder for predetermined irreducible polynomial.

摘要翻译： 伽罗瓦域倍增器系统包括乘法器电路，用于将两个多项式与伽罗瓦域上的系数相乘以获得其乘积; 响应于乘法器电路的用于预测用于不可约多项式的多项式积的模余数的伽罗瓦域线性变换器电路; 以及存储电路，用于向Galois场线性变换器电路提供用于预测用于预定不可约多项式的模余数的一组系数。