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Space time frequency coded mimo ofdm simulation
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space time frequency coding-alamouti scheme
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An effective technique to improve wireless
communication performance is transmit diversity.In this transmitter diversity using a new combination of space-time block codes (STBCs) concatenated with orthogonal frequency division.
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频率选择性衰落信道中一种低复杂度的正交空时分组码译码算法。该方案借鉴D-BLAST系统的检测方法，采用干扰抵消和干扰置零方法消除多径干扰，从而有效地检测出期望信号，译码复杂度低。有创新，希望给研究OSTBC译码的同志带来帮助。-Frequency-selective fading channel a low-complexity orthogonal space-time block code decoding algorithm. The program builds on D-BLAST s
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基于时空处理的盲二维角度和频率的联合估计，对阵列信号处理的有一定的帮助-Blind space-time processing based on two-dimensional angle and frequency of joint estimation of array signal processing is certainly helpful
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Differential Space-Time-Frequency Codes for
MB-OFDM UWB with Dual Carrier Modulation
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摘 要:基于子空间分解的ESPRIT算法常用在阵列处理中对目标进行DOA估计.如果将空间的位移变成时间的
延迟,单个矢量传感器可以实现高分辨率的频率估计.将ESPRIT与矢量传感器相结合,研究了高分辨率频率估计
算法,建立了矢量传感器的数据模型,推导了矢量传感器的空时阵列流形,通过对协方差矩阵进行子空间分解,求得
目标信号的频率估计值.仿真计算研究了不同信噪比!采样频率和数据长度条件下该算法的性能.结果表明基于矢
量传感器的算法比基于声压传感器的算法具有更高的频率估计精确度.
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信息检索系统从最初的纯手工检索系统业已发展到现在的以信息技术为支撑的检索系统，在这一过程中，适应新的信息资源、信息技术这些检索环境，提高信息检索系统的查全率、查准率和系统响应时间是不变的主题，在众多文本中掌握最有效的信息始终是信息处理的一大目标。围绕向量空间模型设计了一个文本检索系统，介绍向量空间模型的基础上给出了基于它的信息检索系统的一般结构框架和各部分的功能，探讨了系统中所涉及到的关键技术。用向量空间模型进行特征表达，用TF-IDF(Term-Frequency Inverse-Docume
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STBC technology used in frequency sensitive enviroment Performance evaluation and analysis of space-time coding for high data rate wireless personal communication.if you are intereting on STBC,you can get some useful inform information from it,please
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Every thing about MIMO system and OFDM, including Matlab source, timing, frequency synchronization, equalization, estimation, PAPR, space time block code, channel capacity
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nRF24L01-Quick-Dev
2.4GHz nRF24L01开发系统使用手册
为了便于用户开发应用先进的2.4GHz nRF24L01高速2Mbps无线芯片开发，迅通科技提供nRF24L01快速开发系统，nRF24L01开发系统包括两个无线高速多频道模块、两个开发板(含可更换MCU及用户开发空间)，详细源代码，原理图，资料光盘，开发板上有MCU、串口、按键和指示灯等，加电即可使用，可完成无线双向数据高速传输的全部功能，并可方便地进行性能以及距离评测，并迅速掌握nRF24L01的多
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Quasi-Orthogonal Space-Time-Frequency Trellis Codes for MIMO-OFDM Systems
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水声通信面临的最困难的问题是多途干扰,其中自多途引起接收信号的幅度衰落,互多途引起接收信号的码间干扰,再加上海洋环境的高噪声背景、低的载波频率、极为有限的带宽以及传输条件的时间—空间—频率变化特性,使得通信过程十分困难。此外，水声通信试验的成本高，难度大，也为水声通信研究带来挑战。
本软件对水声信道的仿真研究很有帮助，可以产生声线图，冲激响应，声速图等仿真文件，结合Matlab画图工具绘制图像，对水声信道的模拟仿真很有帮助。-The most difficult problem fac
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Predictive direct power control (P-DPC) applied
to voltage source pulse-width-modulation (PWM) rectifier was
introduced in this paper. Based on the model of power
prediction, voltage vectors were selected according to
minimizing power errors
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This paper proposes a novel, highly effective spectrum
sensing algorithm for cognitive radio and white space
applications. The proposed spectral covariance sensing (SCS)
algorithm exploits the different statistical correlations of the received
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《MATLAB/Simulink与控制系统仿真（第3版）》从应用角度出发，系统地介绍了MATLAB/Simulink及其在自动控制中的应用，结合MATLAB/Simulink的使用，通过典型实例，全面阐述了自动控制的基本原理以及控制系统分析与设计的主要方法。《MATLAB/Simulink与控制系统仿真（第3版）》共分13章，包括自动控制系统与仿真概述、MATLAB计算基础、Simulink仿真、控制系统数学模型、时域分析法、根轨迹分析法、频域分析法、控制系统校正与综合、线性系统状态空间分析、线
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Abstract—Diagonal Bell Laboratories Layered Space-Time (DBLAST)
structure offers a low complexity solution to realize the
attractive capacity of Multiple-input and multiple-output (MIMO)
systems. In this paper, we apply D-BLAST in orthogonal fr
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Signal identification represents the task of a receiver
to identify the signal type and its parameters, with applications
to both military and commercial communications. In this paper,
we investigate the identification of spatial multiplexing (
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We present a novel beamforming technique
for multi-user frequency-selective indoor channels called
interference-nulling time-reversal (INTR). The beamformer is
implemented with a pre-filter designed to minimize the interuser
interference pres
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The increasing need for high data-rate transmissions over time- or frequency-selective fading channels has drawn attention to modulation schemes with high spectral efficiency such as QAM. With the aim of increasing the “diversity order” of the signal
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