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OFDM技术是一种无线环境下的高速多载波传输技术。无线信道的频率响应曲线大多是非平坦的，而OFDM技术的主要思想是：在频域内将给定信道分成许多正交子信道，在每个子信道上使用一个子载波进行调制，各子载波并行传输，从而能有效地抑制无线信道的时间弥散所带来的符号间干扰（ISI).这样就减少了接收机内均衡的复杂度，有时甚至可以不采用均衡器，仅通过插入循环前缀的方式消除ISI的不利影响，下面是仿真资料！

零件切割问题 给定一块宽度为W的矩形板，矩形板的高度不受限制。现需要从板上分别切割出n个高度为hi，宽度为wi的矩形零件。切割的规则是零件的高度方向与矩形板的高度方向保持一致。问如何切割使得所使用的矩形板的高度h最小？回溯-Parts mutilation given width W of a rectangular plate, rectangular plate of height restrictions. Is the need to cut out from the board, respectively, n-height hi, a width of the rectangular parts wi. Parts of the rules of cutting height direction and the direction of rectangular plates with a high degree of consistency. Asked how to make the use of cutting rectangular plate height h the smallest? Back

hspice 总线 低功耗作业 北大 需要请下 -hspice Bus low-power operation under the Beijing University need to ask Thank you

一个软件看门软件狗的编写-a software gatekeeper software to prepare the dog

二维数组编程，帮助大家理解二维数组的存储和读取模式！-Two-dimensional array of programming, to help everyone understand the two-dimensional array of storage and read mode!

This code for find object on the map

读写bmp文件用于初学者-literacy bmp file for beginners

两个数相加的汇编源码 非常规范 非常基础 为微型计算机技术及应用的实验代码-Compilation of the number two source is the sum of the norms is the basis of micro-computer technology and application of experimental code

Windows动态链接库是一种很重要的资源,如何运用动态库也是VC程序员爱好者追求的-Windows dynamic link library is a very important resource, how to use the dynamic library is also pursued by VC programmers lovers

vb中多个控件的应用和后台数据库的连接-vb control multiple applications and background database connectivity