ccdf-and-pdf-of-SNR-in-DFT-S-OFDM

说明：  This program is for division of natural semiconductor

SIGNAL DETECTION FOR SPECTRUM SENSING Spectrum sensing is a critical functionality in cognitive radio communications as it must be performed before allowing unlicensed users to access a vacant licensed band. Energy detector is also known as radiometer and it is most common method of spectrum sensing because of its low computational and implementation complexities. The coherent detector, also referred to as a matched filter, can improve detection performance if the primary transmitted signal, s, is deterministic and known a priori.

By building the generalized Sigmoid function relationship between normalized step-size and the power of error signal, a novel variable step-size NLMS algorithm is proposed. It is proved that the step-size of NPVSS-NLMS changes as the new algorithm does when A=σv -m and B=2. The physical meanings of the parameters in this algorithm are explored. The theoretical analysis illustrate that this algorithm combine the virtues of NPVSS-NLMS and Sigmoid function, and it leads to faster convergence rate and lower final misalignment. The computer simulation results support the theoretical analysis.

极化码的matlab实现，包括了完整的编码以及译码程序(polar coding and decoding)

说明：  一个基于OPNET的D2D通信模拟代码，主要是简单的模型(A D2D communication simulation code based on OPNET)

实现了VB6下的通讯API的封装 实现了VB6下的通讯API的封装 实现了VB6下的通讯API的封装 实现了VB6下的通讯API的封装(实现了VB6下的通讯API的封装 实现了VB6下的通讯API的封装)

Bit error probability curve for QPSK mimo 2*1

说明：  DS-CDMA的MMSE算法程序，给出了不同信噪比下的BER性能比仿真曲线。(DS-CDMA of the MMSE algorithm program are given under different signal to noise ratio curve of BER performance than emulation.)

Provides telephone system managers, telecommunications sales professionals, and students with nontechnical, easy-to-understand explanations of the major aspects of today s telecommunications systems. DLC: Telephone.

说明：  HC6800EM3 v20原理图（电路图）(HC6800EM3 V20 schematic diagram (circuit diagram))