ofdm_2

标准接口1-5V转换成4-20mA程序，应用于标准传感器接入(Standard Interface 1-5V Converting 4-20mA Program for Standard Sensor Access)

LTE prach的信令分析代码,由协议解析出数据处理需要的信息(The signaling LTE PRACH analysis code, the protocol analysis data processing need information )

实现2ASK、2FSK调制及两者的包络检波解调(Implementation of 2ASK, 2FSK modulation and envelope demodulation of both)

Foreign materials as well as Solving Discrete-Time Markov Chains,ece document.

说明：  完整的手机主题网站,功能完善,并且有大量资源(Complete cell phone theme of site, function perfect, and there is a lot of resources)

modbus通信协议的CSHARP说明，，对使用该通信协议的开发人员来说很有用途。 (modbus communication protocol CSHARP instructions, a useful tool for developers using the communication protocol.)

说明：  matlab 波束形成的仿真，包含时域，频域，相移波束形成(Matlab beamforming simulation, including time domain, frequency domain, phase-shifted beamforming)

用于LDPC编码译码的仿真实现。包括随机生成校验矩阵、由校验矩阵产生生成矩阵、编码、加随机噪声、译码等内容。(For LDPC codec simulation. Including randomly generated check matrix, generated by the parity check matrix generator matrix, coding, plus random noise, such as decoding.)

Multiple input multiple output techniques combined with orthogonal frequency division multiplexing (MIMO-OFDM) provide a promising approach for wireless systems. However, a serious drawback of the OFDM system is the high peak-toaverage power ratio (PAPR), which may severely affect the power efficiency of RF power amplifiers. In this paper, we propose a simple method to reduce the PAPR of MIMO-OFDM signals based on the use of unused subcarriers. Instead of processing the signals at each transmitter separately, a peak cancelling signal is generated at one antenna and is then applied to all the others with only simple modifications. Simulation has shown that a minimum 2 dB reduction in PAPR can be achieved for all transmit signals using this approach. As the signal processing is nearly all done at a single transmitter, repetition of the operations at each transmitter is avoided, and therefore the overall cost of the system can be significantly reduced.

说明：  通过labview实现通信信道仿真中的信道估计以及时域均衡，注意这个是以及完整实现了信道的搭建，通过添加时域均衡以及信道估计实现最终的仿真(The channel estimation and time-domain equalization in communication channel simulation are realized by labview. Note that this is to build the channel completely. The final simulation is achieved by adding time-domain equalization and channel estimation.)