Realization of OFDM modulation and demodulation for visible light communication based on FPGA VLCOFDM为了保证马厩,室内的可见轻通讯(VLC ) 的正确,即时的高速度的传播,关键调整和解调,直角的频率部门 multiplexing (OFDM ) 的技术在这份报纸被学习.时间域同步,频率同步和接收装置的隧道均等被利用短,长的训练序言...
size、循环前缀,以及FFT方向运行时间(run time)的变化,必须对这些run time信号进行缓冲并把它们与输出数据数据包开始(SOP)信号对齐。Therefore, in every control module of OFDM modulation and demodulation, some logic is dedicated to signal alignment.因此,在OFDM调制解调中的每个控制模块中都有一些逻辑信号专用于...
对每个OFDM符号进行IFFT 在openair1\PHY\MODULATION\ofdm_mod.c中引入的头文件中,找到了PHY_ofdm_mod的详细定义(通过循环扩展或者补零完成调制过程) PDCCH是下行控制信道,在PHY/defs_common.h中可找到PDCCH_CONFIG的定义 在进入PHY/impl_defs_top.h后找到相关OFDM调制的过程 _PHY_MODULATION_ Modulation and Demodu...
Therefore, in every control module of OFDM modulation and demodulation, some logic is dedicated to signal alignment.因此,在OFDM调制解调中的每个控制模块中都有一些逻辑信号专用于信号对齐。 该实例中也通过Avalon Stream信号sink_ready(输入准备好信号)和source_ready(输出准备好信号)来支持背压。循环前缀插入模块...
关键词: 正交频分复用, 多载波并行.抗干扰 Abstract: orthogonal frequency division multiplexing (OFDM) technologies have its distinct technical characteristics. In this paper, the application and solution of MIMO OFDM in WLAN is presented. Key issues concerning the implementation and advantages of the ...
This design example shows OFDM (or orthogonal frequency division multiplexing) modulation and demodulation. Learn more about implementing OFDM modulation and demodulation.
OFDM技术基本原理 OFDM是一种特殊的多 载波传输方案,它通过 串并转换将高速数据流 分配到若干并行的低速 子信道中进行传输 并行多载波传输对抗频 率选择性衰落的性能比 串行传输要强, 对抗ISI 的能力比串行传输要强 2.1 OFDM基本原理 Modulation and Demodulation in an OFDM System ∫ P/S ∫∫ + Channel S/P...
(3) Vipin Kumar, Parveen Dhyani ,“Design and Performance Analysis of MIMO-OFDM System using QPSK Modulation Scheme under AWGN Channel”, in International Journal of Electronics and Computer Science Engineering (4)http://www.mathworks.com/help/comm/ref/comm.awgnchannel-class.html ...
As a technology suitable for use in mobile handsets, however, it had to wait for the development of today’s small, low-cost, low power chipsets that can support the complex mathematics involved in creation and demodulation of OFDM transmission. Three variants are on the horizon: the 3rd Gene...
关键词: 正交频分复用,多载波调制,信噪比,调制映射 IV MATLAB-Based Simulation of The OFDM Modulation and Demodulation Abstract OFDM (Orthogonal Frequency Division Multiplexing) is a special multi-carrier modulation technique. OFDM is short of Orthogonal Frequency Division Multiplexing. It is a new type ...