pracsim1

用simulink中s函数实现两路切换开关(S function with simulink realization of two-way switch)

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.

ASK系统的设计与仿真，相干解调及误码率的计算(Ask system design and simulation of coherent demodulation and the calculation of the bit error rate in English)

华为内部员工学习资料，对于想进华为的朋友会有很大帮助。(The internal staff s learning materials in huawei is more helpfull for someone who want to go huawei.)

说明：  数字通信系统的仿真，全matlab代码，实测可用(Digital communication system simulation, full matlab code, measurement available)

说明：  振铃芯片KA2410数据手册(Ringing chip KA2410 Data Sheet)

利用MATLAB编码实现BCH信道编译码功能。(The BCH channel coding function is realized by MATLAB coding.)

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)

DVB-T 2K Reception.DVB-T 2K 接收机matlab源代码。(DVB-T 2K Reception.DVB-T 2K receiver matlab source code.)

基于IRA天线的辐射波模拟器天线辐射性能研究(Radiation wave simulator antenna radiation performance of the antenna-based IRA)