Firstly, The article has a deep investigation on the theory and the model of the WLAN, summarized the former load balance algorithm, and proposed a new WLAN load balance algorithm, when accessing the WLAN, the STA based on the judgement by the average probe time to choose the best AP to access.

Using the method of transition probability flow graphs(TPFG),the average sampling number to signal for these charts is given,and the average time to signal for these charts is deduced.

Because time enters quantum mechanics as a parameter rather than a dynamical operator, people have to consider how to construct a time operator and calculate average time whenever they are faced with a time problem related to a physical process.

This paper presents the successful use of multiple holographic interferometry in realizing the holographic real time double exposure (time average) interferometry.

To improve the performance of energy detection in lower SNR,the time average operation was performed to the train of pulses at the front of the receiver,which can restrain the effect of noise on leading edge detection and the setting of thre.