channel_estimation

51单片机，通过人体红外热释电模块检测人数，并计数。(51 single chip computer, through the human body infrared pyroelectric module to detect the number of people, and count.)

说明：  viterbi卷积码编码,译码,调试通过,可以直接使用(Viterbi convolutional code coding, decoding, debugging pass, can be used directly)

不同GI长度的OFDM-QAM系统性能仿真(Performance simulation of OFDM-QAM systems with different GI lengths)

本程序实现了用位图作为全平的主窗口,是全平显示的又一种实现方法,(This program realizes using bitmap as the main window of full flat, which is another realization method of full flat display.)

实现雷达的恒虚警检测，采用的是CA-CFAR，内有部分注释(The CFAR detection of radar is implemented by CA-CFAR.)

蓝牙耳机音频测试的源码,FFT库是网上下的,该源码业内人士很有用处()

说明：  设计一个巴特沃兹数字低通滤波器，其技术指标为：3dB带宽为0.2π，阻带截止频率为0.3π，通带纹波为1dB，阻带衰减大于30dB，采样间隔T=10ms。 1）采用冲激响应不变法； 2）采用双线性变换法设计； 3）采用FIR的窗函数（Hanning窗、Hamming窗或Blackman窗）设计。(A Butterworth digital low-pass filter is designed. Its technical specifications are: 3 dB bandwidth is 0.2 pi, stopband cut-off frequency is 0.3 pi, passband ripple is 1 dB, stopband attenuation is more than 30 dB, sampling interval T=10 Ms. 1) Impulse response invariance method is adopted. 2) Design by bilinear transformation method; 3) FIR window function (Hanning window, Hamming window or Blackman window) is used to design.)

Cluster Head Selection using a Two-Level Fuzzy Logic in Wireless Sensor Networks

MIMO多天线收发 各种性能比较（BER曲线） 包括MMRC EGC SC Alamouti V-BLAST。信道为瑞利信道，有2种，相关和非相关。测试仿真结果 请运行文件名带plot的。(MIMO multi-antenna transceiver various performance comparison (BER curve), including MMRC EGC Ala SC mouti V-BLAST. Rayleigh channel to channel, two species, and correlated. Simulation results of tests requested documents were operating with the plot.)

说明：  中国的手机游戏市场用户调研报告2008年度(China mobile phone game market research report of 2008 users)