ufmc1

说明：  关于椭圆算法的，比较通俗易懂，供初学者用(Algorithm on the elliptical, more user-friendly for beginners with)

Print out Even Numbers

this document present three algorithms to identify the type of modulation in digital communication.

说明：  MOTOROLA E6 的虚拟控制台，可以运行C/C++程序，尤其是直接在手机上编译程序很方便，这个是我在E680原代码的基础上移植到E6的版本，可以正常使用。(my No ekongsole src)

说明：  本篇讲解遥控信号的ASK、FSK、PSK解调与动画设计的Matlab程序实现。 (This remote control signals on ASK, FSK, PSK demodulation and animation design of the Matlab program.)

optisystem7入门中文讲义（网络版）以及Demo(Introduction to Chinese optisystem7 notes (Online))

光通信中采用OFDM时，信号必须为非负实信号，因此通常采用DCO-OFDM或ACO-OFDM技术，此代码为ACO-OFDM(In VLC the signal has to be real and unipolar. Number of schemes in VLC are proposed in order to provide a real and unipolar signal like U-OFDM , Flip-OFDM , spectrally factorized pptical OFDM].)

说明：  其中第一个压缩文件为ESPRIT在一维和二维下的算法，二维采用的是L形阵列，另外的一个文件是MUSIC算法以及rootMUSIC算法，以及两者的对比代码文件(One dimension and two dimension Esprit DOA estimation algorithm)

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.

扩频通信完整的课件和习题答案，清华经典教材，学习无线移动以及跳频通信的基础(Spread spectrum communication courseware and exercises complete answer, Tsinghua classic textbook, learning, and frequency hopping wireless mobile communication base)