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MSK
说明： MSK FSK的调制程序及其功率谱密度函数图像(MSK FSK modulation process and its power spectral density function of image)
- 2010-04-20 10:10:54下载
- 积分：1
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s_4FSK
利用MATLAB/simulink实现4FSK调制(Using matlab simulink for simulation modulation
4FSk)
- 2020-11-19 10:29:38下载
- 积分：1
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queuing_model
queuing model on CUDA
- 2012-11-15 03:45:18下载
- 积分：1
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ZYOU
电脑串口控制西门子s7-200程序，可以通过电脑直接控制PLC(Computer serial port control of Siemens S7-200 program)
- 2013-08-11 20:37:28下载
- 积分：1
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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
(OFDM) systems using training sequences. A new concept called
channel residual energy (CRE) is introduced. We show that by
minimizing the CRE, we can jointly estimate the I/Q imbalance
and CFO without knowing the channel response. The proposed
method needs only one OFDM block for training and the training
symbols can be arbitrary. Moreover when the training block
consists of two repeated sequences, a low complexity two-step
approach is proposed to solve the joint estimation problem.
Simulation results show that the mean-squared error (MSE) of
the proposed method is close to the Cramer-Rao bound (CRB).
Index Terms—MIMO OFDM, CFO, I/Q imbalance, channel
estimation.
- 2012-03-29 16:33:58下载
- 积分：1
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程序
当今世界电子对抗日益激烈，对于雷达低截获和抗干扰能力的研究越来越受到关注。OFDM (Orthorgonal Frequency Division Multiplexing，正交频分复用)雷达具有大时宽带宽积、波形设计方法灵活、频谱利用率较高以及低截获性能好的特性，因此逐渐成为雷达领域的重点研究方向。除此之外，OFDM信号时域和频域波形都比较复杂，当雷达信号采用OFDM技术时，敌方很难精确估计发射信号波形和瞬时频率，使得截获机不容易分析出检测到的雷达信号。当面对敌方的欺骗式干扰时，对于同样具有大时宽带宽积的线性调频信号，OFDM信号具有更好的抗欺骗式干扰的性能，因此OFDM技术在雷达上的运用愈来愈得到关注。(As electronic warfare becomes increasingly fierce, low intercept probability radar has become an important research filed in electronic countermeasures. OFDM (Orthorgonal Frequency Division Multiplexing) radars have gradually emerged due to their high spectrum efficiency, large time-bandwidth product, flexible waveform design methods, and low intercept probability.In addition, because of the complex time-frequency characteristics of the transmitted signal in OFDM radar, the enemy is difficult to estimate the transmitted signal waveform and instantaneous frequency.When faced with enemy deception interference, OFDM signals have better anti-spoofing performance for LFM signals that also have a large time-bandwidth bandwidth product. Therefore, the use of OFDM technology in radar is attracting more and more attention. .)
- 2020-11-19 21:49:39下载
- 积分：1
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OpenProtocol
BTicino的网关通讯协议详细说明,非常详细,看完了就可以自己动手控制BT智能家居了!(BTicino gateway protocol details, very detailed, have read to make your own intelligent home control it!)
- 2010-09-19 10:12:08下载
- 积分：1
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00786a_Driving-MOSFET-in-High-Current--Switch-Mod
Driving MOSFET in High-Current, Switch Mode Regulators
- 2013-12-23 20:13:07下载
- 积分：1
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QPSK_CMA of SMF
单模光纤中相干接收QPSK信号应用了CMA算法的简单DSP示例，自带vpa仿真数据。(A simple DSP example of CMA algorithm is used to receive QPSK signals coherently in single-mode optical fibers, with VPA simulation data.)
- 2020-12-15 22:09:14下载
- 积分：1
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serial_communication
MATLAB，基于GUI的串口的调试工具，并将接收到的数据实时显示在坐标轴上。(MATLAB, the serial port of the GUI-based debugging tools, and data received in real time is displayed in the axis.)
- 2012-05-22 08:31:22下载
- 积分：1
