调制仿真

TCM with BCJR (Log-Map) & channel Encoder Coded_Modulation

用于4G LTE下行链路PDSCH仿真(for simulation of LTE Downlink PDSCH)

说明：  STM32F4 SPI 4线驱动RA8875 彩屏方案(stm32f4 driver ra8875 TFT lcd display)

说明：  PCM编码译码的matlab代码，设一个输入量，对其进行通信原理仿真。(The MAT code of the PCM code decoding, set an input quantity, and simulate the communication principle.)

包含对gpib通讯的一些操作，类中包括对安捷伦数字万用表的基本操作，对固纬程控电源的基本操作和程控变阻箱的基本操作(Contains some operations for GPIB Communications,Class includes the basic operation of Agilent digital multimeter, weft fixing programmable power supply and programmable resistance box.)

信号的捕获(直接序列扩频系统的matlab仿真实现，包括M,GOLD序列生成，信道建模，噪声，扩频，解扩)(Signal capture (direct sequence spread spectrum system simulation matlab implementation, including M, GOLD sequence generation, channel modeling, noise, spreading, despreading))

QT环境下开发的，用于测试电力通讯规约IEC103的一个程序(QT development environment for the testing of electrical communications statute a procedure IEC103)

正交频分复用系统中信号的调制与解调，我们用傅里叶反变换和变换来实现(Orthogonal frequency division multiplexing system signal modulation and demodulation, and we use the inverse Fourier transform to achieve transform)

DS18B20温度模块，LCD1602显示(DS18B20 Temperature Module, LCD1602 Display)

In this paper, we present and analyze efficient frame synchronization and frequency offset compensation scheme with ternary sequences for an orthogonal frequency division multiplexing (OFDM) system in Rayleigh fading channels. Frame synchronization is an essential procedure for normal operation of the OFDM system because of sensitivity to synchronization errors. And when there are frequency offsets in OFDM frame, the loss of orthogonality occurs and the interference problem among several subcarriers is introduced. These fact leads to the requirement for joint implementation of the frame synchronization and frequency offset compensation.