Message center and gateway mo

分层空时码的自己编写的zf分解检测程序，包括判决无误和判决有误差两种情况-Layered space-time codes zf prepared by decomposition of their own testing procedures, including the accurate judgments and sentences a margin of error of two cases

本源程序提供在平坦衰落信道下的BPSK调制解调的性能分析，并与理论曲线进行比较，得到了理想的效果-This source provides a flat fading channel the performance of the BPSK modulation and demodulation analysis and comparison with the theoretical curve obtained the desired results

介绍了一种构建在定点DSP上的高速瑞利衰落信道仿真模型。通过应用确知性瑞利过程的理论，使得仅需要较少的低频正弦波分量以及简单的运算即可实现较高精度的信道建模；进而可采用查表法并结合TMS320C6202定点数字信号处理器的高并行性和处理能力构造高速的仿真模型-Construction of a fixed-point DSP in the high-speed Rayleigh fading channel simulation model. Through the application process unascertained Rayleigh theory, only need to make small low-frequency sine wave components and the simple operation can achieve higher accuracy Channel modeling; then use look-up table method and combination TMS320C6202 fixed-point digital signal processor parallel and can handle Construction of the high-speed simulation model

We investigate the case of independent Rayleigh faded paths between antenna elements and find that with high probability extraordinary capacity is available. Compared to the baseline n = 1 case, which by Shannon’s classical formula scales as one more bit/cycle for every 3 dB of signaltonoise ratio (SNR) increase, remarkably withMEAs, the scaling is almost like n more bits/cycle for each 3 dB increase in SNR. To illustrate how great this capacity is, even for small n, take the cases n = 2, 4 and 16 at an average received SNR of 21 dB. For over 99 of the channels the capacity is about 7, 19 and 88 bits/cycle respectively, while if n = 1 there is only about 1.2 bit/cycle at the 99 level. For say a symbol rate equal to the channel bandwith, since it is the bits/symbol/dimension that is relevant for signal constellations, these higher capacities are not unreasonable. The 19 bits/cycle for n = 4 amounts to 4.75 bits/symbol/dimension while 88 bits/cycle for n = 16 amounts t

AES安全通信的软件，由于网络的不安全，好多通信可能被窃取，因此此软件可以实现安全通信。

雷达信号仿真的文章，主要是基于先进仪器仿真雷达信号。-Radar signal simulation of the article is mainly based on advanced radar signal simulation apparatus.

this code is help you to draw Fourier Series . with this code you can change some variable and explain what change for education.

使用Matlab编写的viterbi译码程序，希望对大家有用。-use Matlab prepared by the Viterbi decoding procedures in the hope that useful for all.

RS信道编码，可设置域的大小，编码和译码功能齐全，运行在UNIX下-RS channel coding, domain can be set up to the size, encoding and decoding fully functional, running under UNIX

超宽带UWB,包括:uwb.mdl: UWB model - open this to begin. uwb_lib.mdl: Library blocks for UWB model. uwb_init.m: Initialization called before model is loaded. uwb_settings: Sets up structure containing system parameters ( uwb in workspace). uwb_imr.m: Initializes UWB channel impulse response. uwb_sv_*.m: Four M-files used to generate channel impulse responses (MAT files).-Ultra-Wideband UWB, including: uwb.mdl: UWB model- open this to begin.uwb_lib.mdl: Library blocks for UWB model.uwb_init.m: Initialization called before model is loaded.uwb_settings: Sets up structure containing system parameters (uwb in workspace). uwb_imr.m: Initializes UWB channel impulse response.uwb_sv_*. m: Four M-files used to generate channel impulse responses (MAT files).