Video surveillance systems have long been in use to monitor security sensitive areas. The history of video surveillance consists of three generations of systems which are called 1GSS, 2GSS and 3GSS. The first generation surveillance systems (1GS

眼图的生成和带有8QPSK调制的信号，通过加性高斯白噪声信道，检测误码率的模型。-The eye diagram generation and with 8QPSK modulation signal, additive white Gaussian noise channel, the detection error rate model.

16QAM simulation. The entire process includes the generation of the 16QAM constellation and the waveform signal in complex base band, the upconverting to passband, pass through AWGN channel, demodulation with a Matched Filter, detection using the sof