HniqueForPAPRReductionOfCodedOFDMSignal

base is now HeapNumber with valid Smi value.

说明：  大气激光通信湍流效应分析与仿真 介绍了湍流介质中波传播的解析方法以及常用湍流功率谱模型，基于高斯光束在水平传输条件下的传播特性和闪烁(In this paper, statistical characteristics and formation of atmospheric turbulence is described, analytical methods and the turbulence power spectrum models for optical wave propagation through random medium are also introduced.)

生成圆锥共形阵阵元位置，改变顶角，圆锥高度，阵元间距(Generate the position of conical conformal array elements, change the apex angle, the height of cone and the spacing of array elements)

conversion of a matrix into lower triangular matrix

对瑞利信道下误码率的仿真分析,适合入门后的通信类学生学习(Rayleigh channel under BER simulation analysis)

说明：  MIMO线性预编码的ZF,MMSE算法，程序可以直接运行并且注释齐全，大胆放心下载吧(ZF, MMSE algorithm of MIMO Linear Precoding)

数字信号处理，设计数字滤波器，利用MATLAB语言仿真实现(Digital Signal Processing, Design of Digital Filter and Realization by MATLAB Simulation)

生成数字调制类型信号的matlab程序，包括BPSK，QPSK，2FSK,4FSK,QAM等多种类型信号的调制方法(matlab program for digital modelated signal genaration,including BPSK，QPSK，2FSK,4FSK,QAM,etc.)

说明：  前已提出的频谱感知方法主要包括匹配滤波器检测、 能量检测、 循环平稳特征检测以及多分辨率频谱感知. 这些方法均为单节点感知方法.然而，在阴影和深度衰落情况下， 单个节点的感知结果并不可靠， 因此， 需要对多个节点的感知结果进行融合，以提高检测可靠性， 即协作感知技术. 文献采用“或” 准则对各个 CR 感知结果进行融合. 文献则提出了基于 D-S 证据理论的协作频谱感知算法，虽然该算法的性能比“或” 准则或“与”准则要好， 但需要存储大量历史信息， 算法的计算复杂度也很高. 文献中分析了采用似然比检测(likelihood ratio test， LRT) 的软判决与采用“与” 准则的硬判决的性能， 结果表明采用软判决的协作感知性能更优(Previously proposed spectrum sensing methods mainly include matched filter detection, energy detection, cyclostationary feature detection and multi-resolution spectrum sensing. These methods are all single node sensing methods. However, in the case of shadow and deep fading, the sensing results of single node are not reliable, so, It is necessary to fuse the sensing results of multiple nodes to improve the detection reliability, i.e. cooperative sensing technology. In the literature, "or" criterion is used to fuse the CR sensing results. In the literature, a cooperative spectrum sensing algorithm based on D-S evidence theory is proposed. Although the performance of the algorithm is better than "or" criterion or "and" criterion, a large amount of historical information needs to be stored, The computational complexity of the algorithm is also very high. In the literature, the performance of the soft decision based on the likelihood ratio test)

64QAM调制gray码映射在高斯信道下的误比特率和理论误比特率(64QAM modulation gray code mapping in Gaussian channel bit error rate and the theoretical bit error rate)