密码学界牛人Victor Shoup用C++编写数论类库。 NTL is a high-performance, portable C++ library providing data structures and algorithms for arbitrary length integers for vectors, matrices, and polynomials over the integers and over finite fields and for arbitrary precision floating point arithmetic. NTL provides high quality implementations of state-of-the-art algorithms for: * arbitrary length integer arithmetic and arbitrary precision floating point arithmetic * polynomial arithmetic over the integers and finite fields including basic arithmetic, polynomial factorization, irreducibility testing, computation of minimal polynomials, traces, norms, and more * lattice basis reduction, including very robust and fast implementations of Schnorr-Euchner, block Korkin-Zolotarev reduction, and the new Schnorr-Horner pruning heuristic for block Korkin-Zolotarev * basic linear algebra over the integers, finite fields, and arbitrary precision floating point numbers.
标签： high-performance providing portable library
上传时间： 2014-01-04
上传用户：exxxds
复接入，B/W双用户使用直接扩频序列 ％ >>>multiple access b/w 2 users using DS CDMA ％ >>>format is : cdmamodem(user1,user2,snr_in_dbs) ％ >>>user1 and user2 are vectors and they should be of equal length ％ >>>e.g. user1=[1 0 1 0 1 0 1] , user2=[1 1 0 0 0 1 1],snr_in_dbs=-50 ％ >>>or snr_in_dbs=50 just any number wud do ％ Waqas Mansoor ％ NUST , Pakistan
标签：
上传时间： 2014-11-22
上传用户：zl5712176
pccard driver s3c2440.The S3C2440A offers outstanding features with its CPU core, a 16/32-bit ARM920T RISC processor designed by Advanced RISC Machines, Ltd. The ARM920T implements MMU, AMBA BUS, and Harvard cache architecture with separate 16KB instruction and 16KB data caches, each with an 8-word line length.
标签： outstanding S3C2440A features pccard
上传时间： 2013-12-24
上传用户：lizhen9880
用两个数组实现的基数排序方法，时间为（array.length）的平方
上传时间： 2017-03-10
上传用户：yuanyuan123
XTHIDE is a GUI that allows the user to hide a text message in an image file. The user will be asked for a key that will be used to both encode and decode the text into an image. The key can be of length from 2 to 900 characters. The encryption pattern for a key hell is not a subset of the encryption pattern for hello . See help. Created with version 7.01.
标签： user message XTHIDE allows
上传时间： 2013-12-26
上传用户：erkuizhang
Measuring Frequency Content in Signals I this section we will study some non parametric methods for spectrum estimation of a stochastic process. These methods are described in the literature. All methods are based on the Periodogram which is defined for a sequence x[n] with length N according to
标签： parametric Measuring Frequency Content
上传时间： 2017-03-20
上传用户：秦莞尔w
使用FPGA/CPLD设置语音AD、DA转换芯片AIC23，FPGA/CPLD系统时钟为24.576MHz 1、AIC系统时钟为12.288MHz，SPI时钟为6.144MHz 2、AIC处于主控模式 3、input bit length 16bit output bit length 16bit MSB first 4、帧同步在96KHz
上传时间： 2013-12-20
上传用户：二驱蚊器
This code implements the arithmetic coding algorithm used for text compression. At present it takes an input of fixed length but that can be modified in the code as required.
标签： compression arithmetic implements algorithm
上传时间： 2017-04-18
上传用户：wangzhen1990
伸展树，基本数据结构，The tree is drawn in such a way that both of the edges down from a node are the same length. This length is the minimum such that the two subtrees are separated by at least two blanks.
标签： 树
上传时间： 2017-05-07
上传用户：JIUSHICHEN
摘 要 文章以空间监控系统为背景,深入研究了JPEG图像压缩标准的实现方法,并基于FPGA对其进行了实现和优化。文中给出了详细的实现方法和优化过程,测试表明达到了很好的效果。 简单介绍了有损静态图像压缩当前有两种比较流行的标准JPEG和JPEG2000。说明了用JPEG方法压缩的原因。 介绍JPEG基本原理：JPEG对灰度图像的压缩处理过程主要包括:图像分割,离散余弦变换(DCT),量化(Quantization),“Z”形排序(Zigzag Scan),差分脉冲编码调制(Differential Pulse Code Modulation,DPCM)对直流系数(DC),行程长度编码(Run-length Encoding,RLE)对交流系数(AC),霍夫曼(Huffman)编码等。 JPEG标准的特点是离散余弦变换。 比较详细介绍压缩系统的构成和实现。实现提及步骤， JPEG压缩模块设计和编码模块实现细节。
上传时间： 2013-12-25
上传用户：410805624
