DS-THEROY

把地理区域分成一个个小区，蜂窝系统在该区域内提供无线覆盖。把可用的频谱分成很多信道，每个小区分配一组信道。使用频分双工（FDD）。在小区间进行频率利用，N个小区构成一个簇，簇间进行频率复用。定义了传播特性（信道参数）以及同频小区的位置。信道的参数包括：小区半径，路径损耗指数，以分贝为单位的对数正态阴影的标准差，基站发射功率级，移动台发射功率级，每个小区的扇区数，扇区化天线的正反向比，要仿真的瞬时位置的组数，同频干扰阈值。(To a geographical area is divided into small areas, cellular systems in the region to provide wireless coverage. The available spectrum is divided into multi-channel, each plot the distribution of a group of channels. The use of frequency division duplex (FDD). In the district between the frequency of use, N plots constitute a cluster, cluster between frequency reuse. The definition of the propagation characteristics (channel parameters), as well as with the frequency of residential location. Channel parameters include: cell radius, path loss index to decibels for units Lognormal shadow of the standard deviation, the base station transmitter power level, mobile station transmitting power level, the number of sectors in each district, sector of the antenna the pros and cons to the ratio, to the transient simulation of the group a few positions, the same frequency interference threshold.)

认知无线电中，采用循环特征检测的频谱检测算法matlab仿真程序(Using cyclic feature detection spectrum detection algorithm)

说明：  重排二次型时频分布应用例程，对信号进行频率归一化处理，时频分布和重排(Rearrangement of quadratic time-frequency distribution of the application of routine, the signal frequency normalized, time-frequency distribution and rearrangement)

频谱分配算法，采用图着色的比例公平分配算法(Spectrum allocation algorithm, using the ratio of equitable distribution graph coloring algorithm)

利用matlab软件对各种频率选择性信道进行仿真(Matlab software using a variety of frequency-selective channel simulation)

说明：  固定权值的常规波束形成，波束主瓣随着权值的变化而变化(A fixed weight of conventional beam forming, beam main lobe with the right and change the value of)

AVAYA交换机TSAPI监控分机和座席状态的例子。实现了座席的自动签入和手工签入技能组功能。(AVAYA switch TSAPI to monitor the state of extension and seats examples. Seats automatic check-in and manually checked the skill set of functions.)

说明：  包含三种3GPP中典型的多径信道，对于信道仿真有很大的帮助(3GPP contains three types of typical multi-path channel, the channel simulation is very useful to)

说明：  协作通信中DF模式。程序中也只仿了一个中继时的编码转发协作形式。(cooperative diversity DF)

求阵列天线方向图，矩形栅格点平面阵方向图。(Array antenna pattern)