psat-2.1.6-mat

DDC_DUC Xilinx CDMA2000 CPRI xapp1018_cdma2000

Find all factorings of N which have K elements

对采集到的信号进行快速傅里叶变换，可以实现对信号频谱分析(The collected signals fast Fourier transform, spectral analysis of the signal can be achieved.)

本源程序提供在平坦衰落信道下的BPSK调制解调的性能分析，并与理论曲线进行比较，得到了理想的效果(This source provides a flat fading channel the performance of the BPSK modulation and demodulation analysis and comparison with the theoretical curve obtained the desired results)

ieee 的标准文献，学习ldpc码很有帮助的，可以参考参考，老外的东西还是比较权威的(ieee standard documents, helpful learning ldpc code, can refer to the reference, what foreigner, or more authoritative)

结构的频域结果处理的有效程序，对于试验数据可以有效处理(Effective procedures result in the frequency domain processing structure for the test data can be effectively addressed)

In this paper, we investigate the timing and carrier frequency offset (CFO) synchronization problem in decode and forward cooperative systems operating over frequency selective channels. A training sequence which consists of one orthogonal frequency-division multiplexing (OFDM) block having a tile structure in the frequency domain is proposed to perform synchronization. Timing offsets are estimated using correlation-type algorithms. By inserting some null subcarriers in the proposed tile structure, we propose a computationally efficient subspace decomposition- based algorithm for CFO estimation. The issue of optimal tile length is studied both theoretically and through simulations. By judiciously designing the tile size of the pilot, the proposed algorithms are shown to have better performance, in terms of synchronization errors and bit error rate, than the time-division multiplexing-based training method and the computationally demanding space-alternating generalized expectation-maximization

三次样条插值，很不错的插值算法，值得参考(Cubic spline interpolation, the interpolation algorithm is pretty good, it is also useful)

matlab 下的遗传算法源码，可以应用到大部分情况的全局寻优。(By using matlab ，I have provided a genetic algorithm source code, which can be applied to most cases of global optimization.)

利用模式理论，对给定几何尺寸以及折射率分布的光纤进行模式求解与绘图，该程序给出LP02模的求解与绘图。(the LP02 mode of the fiber)