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％threerayRayleigh.m ％ Last Homework pp. 253 5.31 (Second Edition English) ％ Default parameters ％ (threerayRayleigh.m%% Last Homework pp. 2 53 5.31 (English Second Edition) para% Default meters%)

JSON library SimpleJSON

program to interface nwith gsm modem

基于simulink的双馈异步风力发电机的仿真模型(Simulink simulation model of doubly-fed induction wind turbines based)

This file can be used in matlab to implement easy fft. it is very effective and good method to implement easy fft.

信号与系统实验源代码 包括：实验一 周期信号的谐波逼近，幅频相频分析；实验二 simulink信号的抽样和内插； 实验三 GUIDE二阶状态轨迹的显示；实验四 Wav信号的波形分析及频谱分析(Signals and systems including source code of the experiment: The experiment of a periodic signal of the harmonic approximation, the amplitude-frequency phase-frequency analysis experiment II simulink signal sampling and interpolation experimental GUIDE second-order three-state trajectory display experiment four Wav signal waveform analysis and spectral analysis)

说明：  该MATLAB程序生成10个Gold码序列，每个码序列长31位，并计算各个码序列间的相关性。(This MATLAB program generates 10 Gold codes sequences, each of 31 bits long. The correlation performance among code sequences is also computed.)

自适应滤波器的LMS算法，并观察不同的步长因子对其性能的影响。(LMS adaptive filter algorithm, and observe the different step-size factor on their performance.)

此模型为双向DCDC，可用于电池充放电，燃料电池升降压模拟等。采用PWM控制IGBT管占空比。可直接运行，在其基础上修改简单(This model is a bidirectional DCDC, which can be used for battery charging and discharging, fuel cell buck-boost simulation. PWM control of the IGBT tube duty cycle. Can be run directly, modify it on the basis of simple)

The overall objective for LTE is to provide an extremely high performance radio-access technology that offers full vehicular speed mobility and that can readily coexist with HSPA and earlier networks. OFDM/OFDMA technology is introduced for the LTE downlink, supporting very high data rates of up to 300Mbps while Single-Carrier FDMA (SC-FDMA) is used in the uplink with data rates of 80Mbps possible. Additionally, LTE supports operation both in paired and unpaired spectrum (FDD and TDD) using channel bandwidths of approximately 1.4MHz up to 20MHz. The frequency domain scheduling can be done in OFDMA. One of the main challenges in OFDMA is the high peak-to-average radio of the transmitted signal, which requires linearity in the transmitter. The linear amplifiers have low efficiency therefore, OFDMA is not an optimized solution for a mobile uplink where the