DOA估计

Simulata ZF-DFE Pluto code on Matlab

说明：  STM32对接ESP8266的驱动,测试MQTT通讯和测试TCP通讯(STM32 TO ESP8266,test MQTT communication and test TCP communication)

说明：  浅析OPNET建模机制，适合初学者,里面讲解的很详细(Analysis of OPNET modeling mechanism, suitable for beginners)

提供了几种利用jakes模型建立瑞利信道的matlab代码。(Provides several jakes model building using Rayleigh channel matlab code.)

OFDM系统的LS和DFT信道估计的算法分析比较(LS and DFT OFDM system channel estimation algorithm analysis and comparison)

说明：  In order to solve the problem of low bandwidth utilization while the peak-to-average power ratio(PAPR) is reduced.

说明：  3. 瑞利信道中的调制解调、信道估计： (1) 请推导出单径瑞利信道中的BPSK相干解调的理论误码率性能，并画出比特信噪比与误码率的关系曲线。 (2) 在单径瑞利信道中，请设计一种时分的导引辅助的信道估计方法，用Simulink进行仿真，测量BPSK的误码率性能，画出比特信噪比与误码率的关系曲线，并与理论误码率曲线进行对比。(3. Modulation demodulation and channel estimation in Rayleigh channel: (1) deduce the theoretical bit error rate performance of BPSK coherent demodulation in single-path Rayleigh channel, and draw the relationship curve between bit signal-to-noise ratio and bit error rate. (2) in single-path Rayleigh channel, please design a time-division guidance assisted channel estimation method, Simulink simulation, measure the bit error rate performance of BPSK, draw the relationship curve between bit SNR and bit error rate, and compare with the theoretical bit error rate curve.)

说明：  使用凸优化方法来优化17 元随机稀疏线阵 (阵列孔径为 9.744λ )(Using convex optimization method to optimize 17-element random sparse linear array (array aperture is 9.744 lambda))

对语音编码技术的特点进行了分析与研究, 对波形编码,声码器和混合编码三种主要 的语音编码进行了比较, 并介绍了GSM 和CD(This paper analyzes and studies the characteristics of speech coding technology, compares the three main speech codes: waveform coding, vocoder and hybrid coding, and introduces GSM and CD.)

说明：  基于传统信道估计LS，MMSE，和不同多普勒频移下的误码率等(Based on the traditional channel estimation ls, MMSE, and different Doppler frequency shift bit error rate)