HAF-WHT

HBASE Rowkey散列核心代码以及Filter过滤器效果实现 (HBASE Rowkey散列核心代码以及Filter过滤器效果实现)

ML Estimation of frequency, phase, and amplitude of a sinusoid from discrete time samples MLEsim.m (ML Estimation of frequency, phase, and amplitude of a sinusoid from discrete time samples MLEsim.m)

LTE变采样滤波器的设计，应用在USRP平台，100M采样率变到30.72M采样率，以及30.72M采样率变换到100M采样率，文档说明，matlab源代码，以及性能仿真(LTE varying sampling filter design, used in USRP platform, 100M sampling rate changes to 30.72M sampling rate, and sample rate conversion 30.72M to 100M sampling rate, documentation, matlab source code, and performance simulation)

Two different types of measurement matrices: predefined and random measurement matrices were studied and tested using MATLAB. The speech signal was reconstructed without losing important information in order to achieve an increase in the data rates. After multiple simulations

说明：  基于宏小区及微小区MIMO信道模型，比较了MIMO信道在两种传输环境中的空间相关特性，通过数值分 析方法得到了两类信道空间相关性随发送端、接收端天线阵列的分布而变化的特征曲线，并分析比较了信道参数， 即到达角的角度扩展，对空间相关性的影响。(The space correlation is analyzed in different propagation conditions including the MIMO macro-cell and micro-cell applications. The characteristics curves describing the space correlation versus the distance of antennas are obtained according to the numerical analysis. The effect of the spread of the angle of arrival on the space correlation is also investigated. )

MODBUS通信程序，仪表内部通讯用，RTU格式(MODBUS communication procedures, instrumentation, internal communications, RTU format)

说明：  mimo各个信道具体源码，包括高斯、瑞利、多径衰弱等信道模型，本人将其调试、整理并附上运行结果。(MIMO channel specific source code, including Gaussian, Rayleigh, multipath fading and other channel models, I will debug, collate and attach the operation results.)

对当前通信信号中常用的数字调相信号BPSK、QPSK、1／4一QPSK、8PSK的调制识别问题，提出了一种基于信号差分高阶累积量的识剐算法。该算法分两个层次进行调制识别，首先利用信号的四阶累积量特征对BPSK、QPSK和{1／4一QPSK、8PSK}信号进行识别，然后再利用信号差分的四阶和八阶累积量特征对1/4-QPSK、8PSK信号进行识别。从理论上分析了的该算法的有效性，并通过计算机仿真验证了算法具有良好的性能。(A recognition algorithm based on differential high-order cumulant is proposed for the modulation recognition problems of BPSK, QPSK, 1/4-QPSK and 8PSK, which are commonly used in current communication signals. The algorithm is divided into two levels for modulation recognition. Firstly, BPSK, QPSK and {1/4-QPSK, 8PSK} signals are identified by using the fourth-order cumulant characteristics of signals, and then 1/4-QPSK and 8PSK signals are identified by using the fourth-order cumulant and eighth-order cumulant characteristics of signal difference. The validity of the algorithm is analyzed theoretically, and the good performance of the algorithm is verified by computer simulation.)

瑞利衰落信道建模 误码率、传输速率 多径传输(Rayleigh fading channel modeling Bit error rate and transmission rate Multipath transmission)

电话集团交换机的一些组成部分和工作原理,了解交换机的基本常识()