PSD_estimators

BCJR 算法的matlab实现，经测试无误(matlab code of BCJR, tested without errors)

极化码编译码在matlab下的仿真 误码性能分析(Analysis of Error Performance of Polarization Coding and Decoding under Matlab)

说明：  雷达动目标检测仿真，含脉冲压缩，mtd处理等(Radar moving target detection simulation, including pulse compression, mtd processing, etc.)

D2D的自适应链路仿真，可根据信道状态，自选自调制方式(D2D adaptive link simulation, according to the channel state, optional self modulation)

说明：  传输ofdm数据，采用了简单的多径信道，实现水下通信，整体程序还可以，可以参考参考(In order to transmit OFDM data, a simple multi-path channel is used to realize underwater communication. The overall program can also be used for reference)

不同GI长度的OFDM-QAM系统性能仿真(Performance simulation of OFDM-QAM systems with different GI lengths)

说明：  ofdm信道估计，采用了LS算法，DFT进行插值(OFDM channel estimation adopts LS algorithm and DFT interpolation)

说明：  本文主要从自适应调制的算法及实现出发，引入了OFDM子载波分组的概念，详细阐述了五种固定阈值算法和子带BER预估计算法的原理及实现，并在此基础上加入自适应编码，实现自适应调制与编码。(Based on the algorithm and implementation of adaptive modulation, this paper introduces the concept of OFDM subcarrier grouping, elaborates the principle and implementation of five fixed threshold algorithms and subband BER estimation algorithm, and adds adaptive coding to realize adaptive modulation and coding.)

说明：  高速PPM_UWB通信系统的基带信号产生与接收处理的研究与实现(High-speed communication systems PPM_UWB generate and receive baseband signal processing research and implementation)

对发射端功率进行分别配，使得系统吞吐量最大化(Distribute transmitter power to maximize system throughput)