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教程资料 XAPP228 -Virtex器件内的四端口存储器
This application note describes how the existing dual-port block memories in the Spartan™-IIand Virtex™ families can be used as Quad-Port memories. This essentially involves a dataaccess time (halved) versus functionality (doubled) trade-off. The overall bandwidth of the blockmemory in ...
教程资料 XAPP098 - Spartan FPGA低成本、高效率串行配置
This application note shows how to achieve low-cost, efficient serial configuration for Spartan FPGA designs. The approachrecommended here takes advantage of unused resources in a design, thereby reducing the cost, part count, memory size,and board space associated with the serial configuration ci ...
教程资料 Virtex-6 FPGA PCB设计手册
Xilinx is disclosing this user guide, manual, release note, and/or specification (the "Documentation") to you solely for use in the developmentof designs to operate with Xilinx hardware devices. You may not reproduce, distribute, republish, download, display, post, or transmit theDocumentation in ...
教程资料 xilinx Zynq-7000 EPP产品简介
The Xilinx Zynq-7000 Extensible Processing Platform (EPP) redefines the possibilities for embedded systems, giving system and software architects and developers a flexible platform to launch their new solutions and traditional ASIC and ASSP users an alternative that aligns with today’s progr ...
教程资料 CPLD库指南
Xilinx is disclosing this user guide, manual, release note, and/or specification (the “Documentation”) to you
solely for use in the development of designs to operate with Xilinx hardware devices. You may not reproduce,
distribute, republish, download, display, post, or transmit the D ...
通信网络 一种降低OFDM系统PAPR联合算法的研究
选择映射法（SLM）和概率类算法都可以降低OFDM （Orthogonal Frequency Division Multiplexing）系统的PAPR（Peak to Average Power Ratio），传统SLM算法自身较为复杂，但由于其优良的性能，弃之可惜。研究表明，SLM算法和限幅类算法在性能上具有一定的互补性。任何一个算法未必能达到抑制PAPR的理想效果，在深入研究了两 ...
通信网络 一种基于实时车流密度信息的VANET路由协议
在车载自组网中，路由协议很大程度上决定了整个网络的性能。如何有效的利用车流信息提高传输质量是改善路由性能的一个关键问题。本文基于速度-密度线性模型，提出了一种实时车流密度的路由协议RVDR（Real-time Vehicle Density Routing）。该协议通过与邻居节点交换的速度信息，对相关道路车流密度进行预测，并给出基于车流 ...
通信网络 OFDM系统中降低峰均功率比的研究
正交频分复用技术（Orthogonal Frequency Division Multiplexing， OFDM）非常适合高速通信系统，但存在高峰均功率比（PAPR）的问题。对OFDM系统中如何降低PARR的问题进行了研究，讨论了降低PAPR的主要方法，重点分析了选择性映射法（SLM），并在此基础上提出了一种基于预编码矩阵的改进算法，最后通过matlab进行了算法仿真 ...
通信网络 tcp ip协议详解 中文版PDF
很多不同的厂家生产各种型号的计算机，它们运行完全不同的操作系统，但TCP.IP协议族允许它们互相进行通信。这一点很让人感到吃惊，因为它的作用已远远超出了起初的设想。T C P / I P起源于6 0年代末美国政府资助的一个分组交换网络研究项目，到9 0年代已发展成为计算机之间最常应用的组网形式。它是一个真正的开放系统， ...
通信网络 ISM射频接收器的基带计算
Abstract: Many industrial/scientific/medical (ISM) band radio frequency (RF) receivers use an external Sallen-Key datafilter and a data slicer to generate the baseband digital output. This tutorial describes the ISM-RF Baseband Calculator,which can be used to calculate the filter capacitor values ...