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On-the-Design-of-Frequency-Domain-Equalizers-for-
- This paper considers frequency-domain receiver design for OQPSK signals (Offset Quaternary Phase Shift Keying). It is shown that conventional QPSK receivers are not suitable to OQPSK schemes since they lead to significant interference between
On-the-Design-of-Linear-Receivers-for-SC-FDE-Sche
- This paper considers the design of linear frequency-domain receivers with oversampling for OQPSK (Offset Quaternary Phase Shift Keying) signals. Based on a receiver structure able to eliminate the residual interference between in-phase (I) an
On-the-Design-of-Iterative-FDE-Receivers-for-OQAM
- This paper considers receiver designs for SC-FDE schemes (Single-Carrier with Frequency-Domain Equalization) employing M-ary OQAM signals (Offset Quadrature Amplitude Modulation). It is shown that the interference between the in-phase (I) and
fwdmalawmc
- Abstract—In this paper, we study the joint estimation of inphase and quadrature-phase (I/Q) imbalance, carrier frequency offset (CFO), and channel response for multiple-input multipleoutput (MIMO) orthogonal frequency division multiplexing (O
matlabcodeandbasepaper
- Abstract—In this paper, we study the joint estimation of inphase and quadrature-phase (I/Q) imbalance, carrier frequency offset (CFO), and channel response for multiple-input multipleoutput (MIMO) orthogonal frequency division multiplexing (O
1331313
- 频偏 相位噪声的OFDM系统 对信道的估计-The frequency offset phase noise in OFDM system channel estimation
newjidianqi
- 本文利用编写的MATLAB软件结合解析法证，分析了一种新型的接地距离继电器在系统振荡时再发生单相经过渡电阻接地短路时的动作特性。该接地距离继电器的动作判据是通过比较故障后测得的母线电压、补偿电压、零序电流和负序电流四个量的相位关系以确定继电器的动作行为情况 -In this paper, written in MATLAB software analysis and forensic analysis of a new type of ground distance relays in th
OFDM-FPGA
- 频率同步是宽带OFDM系统中的关键技术，IEEE 802.11a 采用OFDM技术，利用其前导序列的重复结构，提出了一种分步的粗细频偏捕获与校正算法，同时为了补偿时域同步后的残余相差和适应信道的时变特性，还提出了一种基于频域导频的相位跟踪方案-Frequency synchronization is a key technology in the broadband OFDM systems, IEEE 802.11a uses OFDM technology, the use of the r
compensation-of-dead-time
- 交流伺服系统中的死区效应分析与补偿分析了逆变器的死区效应产生的原因及其对交流伺服系统控制性能产生的影响,指出死区补偿的关键 在于电流相位的获取,为了克服实际系统中电流零点的模糊性,提出了一种基于两相静止坐标系下的前馈死 区补偿方法. 该方法通过对三相输出电流一个周期内补偿电压进行傅里叶变换,发现仅需补偿1 ,5 ,7 次谐波 分量即可消除死区效应. 仿真和试验结果验证了这种方法的正确性和可行性.-AC servo system analysis and compensation of
communication
- 针对通信侦查课题，通过已知先验知识和截获信号，进行找出同步序列，匹配滤波，校正频偏和相偏，均衡，解交织，译码，恢复出原序列，最终得到的序列与原序列作对比得到误码率为0-Investigation subject for the communication, by known a priori knowledge and intercepted signal conducted to identify the synchronization sequence, the matched filter
qpsk_demod_use_FPGA
- 根据软件无线电的思想，提出了一种新颖的数字信号处理算法，对QPSK信号的相位进行数字化处理，从而实现对QPSK信号的解调.该算法允许收发两端载波存在频差，用数字锁相实现收发端载波的同步，在频偏较大的情况下，估算频偏的大小，自适应设置环路的带宽，实现较短的捕获时间和较好的信噪性能。整个设计基于XILINX公司的ISE开发平台，并用Virtex-II系列FPGA实现。用FPGA实现调制解调器具有体积小、功耗低、集成度高、可软件升级、扰干扰能力强的特点，符合未来通信技术发展的方向。-According
fadingoqpsk
- 通信原理实验matlab仿真中衰落信道下的偏移四进行相移键控-Matlab simulation of communication theory experiment fading channels to offset four-phase shift keying
phaseshift
- 移相器，任意角度偏移，包含test，经过测试-Phase shifters, any angle offset, contains test after test
1
- 超紧耦合是 GPS/INS 组合导航系统的最新研究方向，它采用 INS 测得的载体动态信息辅助 GPS 接收机跟踪环 路，消除卫星信号中由于载体与卫星之间相对运动所产生的频率偏移，提高接收机在高动态环境下载波跟踪性能，同时还 可以压缩带宽，有效增强接收机抗干扰性能。介绍 GPS/INS 超紧耦合技术，给出 INS 辅助 GPS 载波跟踪环路结构图和相应 的数学模型，分析 INS 辅助 GPS 跟踪环路在动态环境下的动态残留及其对环路相位误差的影响，并进行了模型仿真，最后 对仿真结
Power-Flow
- 本程序的功能：在直角坐标系中，运用牛顿---拉夫逊法求解一般的潮流问题， 形成节点导纳矩阵、雅克比矩阵来建立修正方程，求解偏移量和电压新值， 进而求解电流、相角和输入功率、输出功率以及线路功率及其损耗问题。-This program features: In the Cartesian coordinate system, using Newton--- Raphson method for solving general trend of the problem, the forma
szdyb
- labview 数字电压表 功能描述：实现仿真信号的电压测量，显示信号频率、标准频率、相位、幅值、直流偏置、峰值、平均值和有效值，并以图形方式显示仿真信号。-labview digital voltmeter Descr iption: Implementation of the simulated signal voltage measurement, display the signal frequency, standard frequency, phase, amplitude, DC
sumigpspi
- 相移内插偏移,在偏移前对资料做的处理，可以在地震勘探中使用。-Phase shift interpolation offset
modoqpsk
- Offset quadrature phase-shift keying (OQPSK) is a variant of phase-shift keying modulation using 4 different values of the phase to transmit. It is sometimes called Staggered quadrature phase-shift keying (SQPSK).
s_048_12a
- 参考Matlab提供的模块建立简化的三相锁相环的仿真模型，只保留必要的步骤，如abc-dqz只计算Vq，去除频率反馈模块和自动参数调整模块等。 建立单相锁相环的计算模型 简化单相锁相环的系统结构，保留必要的PI控制器等模块 验证并讨论输入信号频率在45-65Hz变化时设计的锁相环的动静态性能 仿真并分析三相输入信号包含谐波、不平衡和直流偏移时锁相环的锁相结果-Reference Matlab provides th
INVERTERPWMcompensater
- compensation of dead time effect of the inverter dead time effect causes the impact of the control performance of the INVERTER system, and pointed out that the dead time compensation, the key lies in the current phase of the acquisition, in order to