66430717

说明：  针对数字卫星常用的 7 种通信信号调制方式(QPSK、8PSK、16QAM、32QAM、64QAM、16APSK、32APSK)，对零中心归一化瞬时幅度谱密度最大值、四次方谱、幅度、高阶累积量四种特征参数进行了分析，提出了一种联合特征参数的信号调制识别方法．(Aiming at seven communication signal modulation modes commonly used in digital satellite (QPSK, 8PSK, 16QAM, 32QAM, 64QAM, 16APSK and 32APSK), four characteristic parameters of zero-center normalized instantaneous amplitude spectral density, quadratic spectrum, amplitude and high-order cumulant are analyzed, and a signal modulation recognition method of joint characteristic parameters is proposed. Method.)

This paper presents a performance of the UWB system in a time hopping binary pulse position ultra-wideband modulation scheme (TH BPPM-UWB) in the presence of an AWGN channel.

主要用于复数类的计算，功能齐全，经过检验(Mainly used in the plural type of calculation, functional and tested)

MODBUS协议详细 三部分 GB-T19582 国标(MODBUS protocol detailed three parts GB-T19582)

说明：  仿真Alamouti 的 BER 性能曲线（QPSK 调制）(Simulation BER of QPSK Alamouti STBC with two transmit and receive antenna)

里面是一些硬件资料，蓝牙音箱的demo板，有需要的可以看下(There is some hardware information, Bluetooth speaker demo board, there is a need facie)

wcdma上行扰码生成，严格按照3gpp 25212进行编写，有多种实现方式(wcdma uplink scrambling code generation, in strict accordance with 3gpp 25212 to write, there are a variety of ways)

对不同调频周期数 不同时间带宽积和不同调 频 极 性 等 多 种 组 合 情况下的 信号正交性进行了分析 发现通过不同调制参数的灵活组合可以实现 信号正交调制 (Analysis found that is orthogonal to the signal in the case of the variety of combinations of different FM number of cycles of the different time-bandwidth product and different FM polarity signal quadrature modulation can be achieved by the flexible combination of different modulation parameters)

说明：  多子带自适应算法，能够有较好的鲁棒性以及稳态特性。(The multi-subband adaptive algorithm has better robustness and steady-state characteristics.)

GD32F库函数，各种外设，gpio等等(gd32 library v2.0.0 gpio ..)