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通讯编程文档 A MATLAB program has been written to investigate Orthogonal Frequency Division Multiplexing (OFDM)
A MATLAB program has been written to investigate Orthogonal Frequency Division
Multiplexing (OFDM) communication systems. This program is valuable for future researchers
simulating systems that are too theoretically complex to analyze. Single-carrier QAM and multicarrier
OFDM are compared to demonst ...
书籍 Orthogonal+Frequency+Division+Multiplexing
Orthogonal frequency division multiplexing  (OFDM) has been shown to be
an effective technique to combat multipath fading in wireless channels. It
has been and is going to be used in various wireless communication systems.
This book gives a comprehensive introduction on the theory and practice ...
书籍 Wavelength Division Multiplexing
Wavelength division multiplexing (WDM) refers to a multiplexing and transmission
scheme in optical telecommunications fibers where different wavelengths, typically
emitted by several lasers, are modulated independently (i.e., they carry independent
information from the transmitters to the receivers) ...
学术论文 基于FPGA的OFDM基带系统研究.rar
近几年来，OFDM(Orthogonal Frequency Division Multiplexing)技术引起了人们的广泛注意，根据这项新技术，很多相关协议被提出来。其中WiMax(Wireless MetropolitanArea Networks)代表空中接口满足IEEE 802.16标准的宽带无线通信系统，IEEE标准在2004年定义了空中接口的物理层(PHY)，即802.16d协议。该协议规定数据传输采用 ...
学术论文 基于ARMDSP的OFDM水下图像传输系统的研究与实现
正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)技术是一种多载波传输技术，它的基本思想是在频域内将给定信道划分成几个相互正交的子信道，每个子信道使用一个子载波进行调制，各子载波并行传输。该技术可以有效提高频谱利用率，能够对抗多径效应产生的频率选择性衰弱和载波间干扰，在时变、频变、多径干 ...
学术论文 OFDM信道估计模块运算部件的FPGA设计
正交频分复用(OnIlogonaJ Frequency Division Multiplexing，OFDM)技术通过将整个信道分为多个带宽相等并行传输的子信道，通过将信息经过子信道独立传输来实现通信，子信道的正交性可以保证最大限度的利用频谱资源。OFDM系统通过循环前缀来消除符号间干扰(ISI)，通过IDFT/DFT调制解调降低了系统实现的复杂度。由于其频谱利 ...
学术论文 基于FPGA全数字OFDM收发信机
正交频分复用(OFDM，Orthogonal Frequency Division Multiplexing)技术作为一种可以有效对抗信号波形间干扰的高速传输技术，引起了广泛关注。它利用许多并行的、传输低速率数据的子载波来实现高速率的通信。它的特点是各子载波相互正交，所以扩频调制后的频谱可以相互重叠，不但减小了子载波问的相互干扰，还大大提高了频谱 ...
电源技术 电源调整与虚拟地
Abstract: Rail splitting is creating an artificial virtual ground as a reference voltage. It is used to set the signalto match the op amp's "sweet spot." An op amp has the most linear- and distortion-free qualities at that sweetspot. Typically, the sweet spot occurs near the center between the ...
教程资料 XAPP740利用AXI互联设计高性能视频系统
This application note covers the design considerations of a system using the performance
features of the LogiCORE™ IP Advanced eXtensible Interface (AXI) Interconnect core. The
design focuses on high system throughput through the AXI Interconnect core with F
MAX
 and
area optimizat ...
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 ...