beam-forming

前段时间在北大OJ平台上做的几个题目，主要用到几个知识点...(OJ platform some time ago at the university to do the subject ...)

addmitance matrix for solving load flow analysis

双极性矩形随机信号的归一化功率谱密度 HDB3码的编译码（要求给出眼图）(Normalized power spectral density HDB3 code codec bipolar rectangular random signals (required to give the eye))

Here is the currrent controller in physical RL(resistance- inductance) circuit where you can control current in power system

多频道奇异谱分析，即奇异谱分析的升级版，广泛应用于气象变化，股市波动，降噪等领域。(Multi-channel singular spectrum analysis, that singular spectrum analysis of an upgraded version of the widely used weather changes, stock market volatility, noise reduction and other areas.)

说明：  用基带等效的方式仿真16-QAM在AWGN信道下的误码率和误比特率性能，并与理论值相比较。(The bit error rate (BER) and bit error rate (BER) performance of 16-QAM in AWGN channel is simulated by baseband equivalent method, and compared with the theoretical value.)

利用JPEG2000标准进行图像压缩和图像解压的Matlab程序(image compression and decompression using JPEG2K)

matlab 很好用的入门教材之一，适合自学(One good use matlab introductory textbook for self-study)

说明：  非负矩阵分解nmf，通过迭代w和h，收敛后输出最终w和h。(Non-negative matrix decomposition nmf, through iteration W and h, the final W and H are output after convergence.)

在matlab中的ofdm的编程，包括数据生成，调制，数据传送，频道干扰，解调，数据接收，并且计算误码率，把误码率用图像的形式表现出来。(In the OFDM matlab programming, including data generation, modulation, data transmission, channel interference, demodulation, data receiving, and calculating the BER, the BER image forms.)