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近年来随着移动互联网业务和物联网业务的兴起与 发展，用户对移动宽带业务需求越来越旺盛，对移动通信 网络的接入速率和质量要求也越来越高，原有基于码分多 址（CDMA）的3G及其增强技术未来将无法满足业务发展 需要，因此3GPP及3GPP2组织自2004年开始启动长期 演进（LTE）/空口演进（AIE，后改名为超移动宽带UMB）项 目，旨在通过引入一些关键技术，如正交频分复用（OFDM） 调制技术、多入多出（MIMO）技术、混合自动重传请求 （HARQ）、全IP扁平化架构及动态带宽分配等实现网络变 革，达到以下所述的网络性能，为移动宽带多媒体业务持 续发展提供技术保障。(Abstract:To meet the needs of mobile broadband services,LTE is being deployed and becoming ma－ tured,which includes key technologies such as OFDM,high-order modulation,HARQ,enhanced multi-antenna technologies,fast synchronization technologies,scalable control channel design,adap－ tive resource allocation,interference suppression technologies etc.Moreover,the discussion on LTE- Advanced has started,where technologies being considered includes aggregate multi-carrier,high－ er-order MIMO,smart relay,heterogeneous net－ work,multipoint collaboration as well as enhanced interference management.)

a numerical solution of Poisson equation for axis-symmetrical cylindrical coordinates

time-invariant degradation models and stationary signals and noise, the classical Fourier domain Wiener filter, which can be implemented in O(N logN) time, gives the minimum mean-square-error estimate of the original undistorted signal. For time-varying degradations and nonstationary processes, however, the optimal linear estimate requires O(N2) time for implementation. We consider filtering in fractional Fourier domains, which enables significant reduction of the error compared with ordinary Fourier domain filtering for certain types of degradation and noise (especially of chirped nature), while requiring only O(N logN) implementation time. Thus, improved performance is achieved at no additional cost. Expressions for the optimal filter functions in fractional domains are derived, and several illustrative examples are given in which significant reduction of the error (by a factor of 50) is obtained.

氧乐果控制过程，利用matlab编程，使用模糊迭代学习控制方法，很好的实现了对氧乐果合成温度的控制。(Omethoate control process, using matlab programming, the use of fuzzy iterative learning control methods, good to realize Omethoate synthesis temperature control.)

matlab 数值处理实例,应用于各种数值处理算法，有相应的程序目录.(matlab numeric computation examples, with various numeric methods inclued.)

本书把MATLAB 当作一种技术编程语言来教，向学生展示如何编写简洁高效，有充分根据的程序。(The book as a technique to MATLAB programming language to teach, to show students how to write a simple and efficient, there is a sufficient basis for the program.)

Overview on OFDM, describes the OFDM system and parameters and basic concepts on OFDM techniques.

matlab的gui工具实现计算器 包括加减乘除以及三角函数，反三角函数(matlab gui tools to implement the calculator, including addition, subtraction, and trigonometric functions, inverse trigonometric functions)

灰色系统GM（1，n）模型的源代码，实现多因素作用下复杂系统的预测。(Gray system GM (1, n) model of the source code, under the effect of multi-factor prediction of complex systems.)

这是21寸定位压合源代码(it s very inportent)