Chapter_14_Programming

CDMA码分多址技术。包括指令编写说明和Q2358C型号CDMA的说明书(CDMA Code Division Multiple Access technology. Including the preparation of instructions and instruction manuals Q2358C CDMA models)

基于互相关函数，采用求和广义互相关函数(summed-GCC)法用于机器人系统平台。由于采用不同的映射函数(mapping functions)，GCC法在该平台下，只需三个麦克风即可进行三维定位，突破了基于TDOA法进行三维声源定位最少需4个麦克风的限制(Based on cross-correlation function, using generalized cross-correlation function sum (summed-GCC) method for the robot system platform. Because of using different mapping function (mapping functions), GCC method in the platform, the only three to three-dimensional microphone positioning, a breakthrough TDOA method based on three-dimensional sound localization will take at least four microphone restrictions)

说明：  802.16E的协议文档，完整版本。其中包括3个版本。(802.16E protocol document, full version.)

CSMA/CA 协议吞吐量与站点数量的分析，注释较详细(CSMA/CA protocol throughput and the number of stations a more detailed analysis, annotation)

说明：  模拟调制识别各特征参数随信噪比变化曲线。信号的瞬时信息包括瞬时幅度、瞬时相位、瞬时频率及其不同角度的统计特征值，其中瞬时幅度、瞬时相位、瞬时频率是一个信号最基本的特征。（AM、DSB、SSB、VSB、FM、AM-FM）(Simulated Modulation Recognition Curve of Variation of Characteristic Parameters with Signal-to-Noise Ratio)

说明：  雷达信号分选的经典matlab代码。包含PRI变换、CDIF、SDIF三种方式(radar signal sort include PRI CDIF SDIF)

一个在DOS下实现的利用串口的文件传输程序，因为用到了软中断可能在XP下不能正常使用。(One in use under DOS serial file transfer process, because the soft interrupt may be used in XP should not under normal use.)

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：  Zero forcing - with interference cancellation

说明：  OFDM的matlab注水算法编程算法。经典注水算法。用于频率资源分配。(OFDM's Matlab water injection algorithm programming algorithm. Classic water injection algorithm. It is used for the allocation of frequency resources.)