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  • Low density parity check matrix

    Low density parity check matrix

    /dl/494367.html

    标签: density parity matrix check

    上传时间: 2014-01-08

    上传用户:yt1993410

  • Bi-density twin support vector machines

    In this paper we present a classifier called bi-density twin support vector machines (BDTWSVMs) for data classification. In the training stage, BDTWSVMs first compute the relative density degrees for all training points using the intra-class graph whose weights are determined by a local sc ...

    /dl/520141.html

    标签: recognition Bi-density machines support pattern vector twin for

    上传时间: 2019-06-09

    上传用户:lyaiqing

  • LDPC编码算法研究及其FPGA实现.rar

    LDPC(Low Density Parity Check)码是一类可以用非常稀疏的校验矩阵或二分图定义的线性分组纠错码,最初由Gallager发现,故亦称Gallager码.它和著名Turbo码相似,具有逼近香农限的性能,几乎适用于所有信道,因此成为近年来信道编码界研究的热点。 LDPC码的奇偶校验矩阵呈现稀疏性,其译码复杂度与码长成线性关系,克服了分 ...

    /dl/9284.html

    标签: LDPC FPGA 编码

    上传时间: 2013-06-09

    上传用户:66wji

  • 高吞吐量LDPC码编码构造及其FPGA实现

    低密度校验码(LDPC,Low Density Parity Check Code)是一种性能接近香农极限的信道编码,已被广泛地采用到各种无线通信领域标准中,包括我国的数字电视地面传输标准、欧洲第二代卫星数字视频广播标准(DVB-S2,Digital Video Broadcasting-Satellite 2)、IEEE 802.11n、IEEE 802.16e等。它是3G乃至将来4G通信系统中的核 ...

    /dl/12377.html

    标签: LDPC FPGA 吞吐量 编码

    上传时间: 2013-07-26

    上传用户:qoovoop

  • AN2586_stm32硬件开发入门

    This application note is intended for system designers who require a hardware implementation overview of the development board features such as the power supply, the clock management, the reset control, the boot mode settings and the debug management. It shows how to use the High-density and Medium- ...

    /dl/15333.html

    标签: 2586 stm AN 32

    上传时间: 2013-04-24

    上传用户:epson850

  • 应用笔记-校准激光驱动器POT和DAC

    Abstract: A laser module designer can use a fixed resistor, mechanical pot, digital pot, or a digital-to-analogconverter (DAC) to control the laser driver's modulation and bias currents. The advantages of a programmablemethod (POT or DAC) are that the manufacturing process can be automated and ...

    /dl/21185.html

    标签: POT DAC 应用笔记 校准

    上传时间: 2013-11-13

    上传用户:ca05991270

  • 多层印制板设计基本要领

    【摘要】本文结合作者多年的印制板设计经验,着重印制板的电气性能,从印制板稳定性、可靠性方面,来讨论多层印制板设计的基本要求。【关键词】印制电路板;表面贴装器件;高密度互连;通孔【Key words】Printed Circuit Board;Surface Mounting Device;High Density Interface;Via一.概述印制板(PCB-Printed Circuit ...

    /dl/22266.html

    标签: 多层 印制板

    上传时间: 2013-11-19

    上传用户:zczc

  • 高性能覆铜板的发展趋势及对环氧树脂性能的新需求

    讨论、研究高性能覆铜板对它所用的环氧树脂的性能要求,应是立足整个产业链的角度去观察、分析。特别应从HDI多层板发展对高性能CCL有哪些主要性能需求上着手研究。HDI多层板有哪些发展特点,它的发展趋势如何——这都是我们所要研究的高性能CCL发展趋势和重点的基本依据。而HDI多层板的技术发展,又是由它的应用市场——终 ...

    /dl/22271.html

    标签: 性能 发展趋势 覆铜板 环氧树脂

    上传时间: 2013-11-22

    上传用户:gundan

  • DN457宽输入电压范围同步降压稳压器

      The LTC®3610 is a high power monolithic synchronousstep-down DC/DC regulator that can deliver up to 12Aof continuous output current from a 4V to 24V (28Vmaximum) input supply. It is a member of a high currentmonolithic regulator family (see Table 1) that featuresintegrated low RDS(ON) ...

    /dl/24338.html

    标签: 457 DN 同步降压

    上传时间: 2013-11-07

    上传用户:moerwang

  • 高电流便携式产品的电池充电器方案

      The LTC®4155 and LTC4156 are dual multiplexed-inputbattery chargers with PowerPath™ control, featuring I2Cprogrammability and USB On-The-Go for systems suchas tablet PCs and other high power density applications.The LTC4155’s float voltage (VFLOAT) range is optimizedfor Li ...

    /dl/24346.html

    标签: 高电流 便携式产品 电池充电器 方案

    上传时间: 2013-10-09

    上传用户:hanhanj