filterECG

conversion of a matrix into lower triangular matrix

说明：  基于matlab的QPSK调制与解调程序(QPSK modulation and demodulation)

半导体通讯协议，包含SECS-I SECS-II HSMS GEM讲解(include SECS-I SECS-II HSMS GEM)

research papers on wavelet transform

手机GSM TI 平台 串口 uart 驱动 源代码(Serial port uart driver source code of mobile phone GSM TI platform)

（1） 分析QPSK调制、解调原理，并画出其系统框图； （2） 产生等概率且相互独立的二进制序列，作为待传输的信号，并画出其波形； （3） 进行8PSK调制，分别画出I、Q两支路信号经过乘法器后的波形以及8PSK调制波形； （4） 产生均值为0，方差为1的加性高斯随机噪声，画出其时域波形及频谱； （5） 将加性高斯随机噪声作为传输信道的干扰，画出接收端信号的时域图； （6） 进行8PSK解调，输出解码序列，画出解调后信号波形； （7） 计算系统信噪比、传输误码率。((1) analysis of QPSK modulation, demodulation, and draw the system block diagram (2) have equal probability and independent binary sequence as a signal to be transmitted, and draw the waveform and (3) 8PSK modulation, Draw the I, Q two way signal multiplier waveform and 8PSK modulation waveform (4) to produce zero mean and variance of an additive Gaussian random noise, to draw the time-domain waveform and spectrum ( 5) the additive Gaussian random noise interference as a transmission channel, to draw the time-domain diagram of the receiver signal (6) 8PSK demodulator output decoding sequence, draw the demodulation of the signal waveform computing system (7) signal-to-noise ratio, the transmission bit error rate.)

在OPNET上搭建场景，仿真接入算法，使用的是S-ALOHA接入算法，以仿真吞吐量、时延等性能(Build a scene on OPNET, simulation access algorithm, using the S-ALOHA access algorithm to simulate the throughput, latency and other performance)

MATLAB代码，产生GNSS导航信号BOC调制的相关频谱特性(The generate of BOC signal AND ITS PDF)

3g无线网络规划方法，WCDMA无线小区规划(3g wireless network planning, WCDMA Cell Planning)

cdma系统 LMS算法 盲自适应多用户检测(cdma systems LMS adaptive multiuser detection algorithm)