BCH_decode_berlekamp.m

重点研究 了低信噪比﹑多径瑞利衰落信道条件下，基于高阶累积量的OFDM信号盲识别技 术。提出了利用奇数阶累积量区分OFDM信号与单载波信号的方法，并对基于三 阶和五阶累积量的算法进行了仿真分析。 (﹑ Focus on the low SNR multipath Rayleigh fading channel conditions, based on cumulant OFDM signal blind identification technology. Made a distinction between the use of odd-order cumulants single-carrier OFDM signal with the signal approach, and based on the cumulative amount of third-order and fifth-order algorithm for the simulation.)

说明：  通过C++语言实现了OFDM系统的仿真，包裹调制、子载波映射、循环前缀、频域时域映射，解调等等，代码简单易懂(The simulation of OFDM system is realized by C + +, including package modulation, subcarrier mapping, cyclic prefix, frequency domain time domain mapping, demodulation and so on. The code is simple and easy to understand)

说明：  构建了基于压缩感知的信号处理系统，并用BPDN算法将频域稀疏信号恢复出来，BPDN算法与GPSR算法类似，属于基追踪算法，复杂度较高但较为精准。(A signal processing system based on compressed sensing is constructed, and bpdn algorithm is used to recover the sparse signal in frequency domain. Bpdn algorithm is similar to GPSR algorithm, which belongs to base pursuit algorithm, with higher complexity but more accurate.)

从实际应用的角度出发，提出利用跟踪微分滤波器抑制机冀挠曲变形产生的影响，通过杆臂效应补偿消 除干扰加速度，用延时补偿算法减少由数据传输延迟造成的量测信息误差。在此基础之上，采用“速度+姿态” 匹配方案，研究了基于H_滤波估计的快速传递对准方法.大量数值仿真、静态试验、动态跑车试验表明，这 些方法有收敛速度较快、精度较高的特点，并t,有较强的抗干扰能力。试验也验证了传递对准方法的有效、可 行，能满足控制系统对导航信息的精度要求. ()

4FSK调制解调的matlab代码。采用相干解调的方式4FSK进行解调，与大多数方案的包络检波不同。基带信号用四种电平来表示，与调制信号相区分。(Demodulation matlab code 4FSK modulation. Coherent demodulation 4FSK demodulates Unlike most programs envelope detector,. The baseband signal is represented with four level distinguish phase with the modulation signal.)

说明：  power allocation in NOMA

说明：  LDPC各种改进的比特翻转算法及加权比特翻转算法，包含BF,WBF,IMWBF,SMWBF,VSMWBF,RRWBF，提前终止的多比特翻转EWBF(LDPC improved bit flipping algorithms and weighted bit flipping algorithms, including BF, WBF, IMWBF, SMWBF, VSMWBF, RRWBF, and early terminated multi bit flipping EWBF)

仿真了恒虚警的平均单元算法，给出仿真结果，同时分析了不同窗口数对虚警率和检测率的影响，并写了详细的注释(The constant false alarm average cell algorithm is simulated, and the simulation results are given. Meanwhile, the influence of different window numbers on false alarm rate and detection rate is analyzed, and detailed annotations are written.)

说明：  基于OQPSK，高斯信道和瑞利信道的matlab仿真程序(Matlab simulation program based on OQPSK)

ijetty服务器的启动关闭以及资源下载，基本框架，直接import进eclipse就可运行(ijetty server startup shutdown, and resources, the basic framework for direct import into eclipse can be run)