adaptive

说明：  建立GEO和LEO的轨道，并计算他们间方位角和俯仰角速度及加速度，多普勒频移等重要参数。(established GEO and LEO orbits, and calculate their azimuth and pitch between angular velocity and acceleration, Doppler frequency shift and other important parameters.)

正交频分复用（OFDM）是一种特殊的多载波传输技术。它可以有效地对抗多径衰落，能够以很高的频谱利用率来实现高速数据传输。分析介绍了OFDM系统的基本原理及系统性能，以Matlab为开发平台，仿真了OFDM系统的误码率，仿真结果表明OFDM系统在较低信噪比下也具有较好的性能(Orthogonal Frequency-division Multiplexing（OFDM） is a special kind of multi-cartier transmission technology. It can effectively overcome multi-path fading and increase the spectral usage efficiency to implement high-speed data transmission. This paper analyzes the basic principle of OFDM system and system performance, and simulates the Bit Error Rate （BER） of OFDM system on the platform of Matlab. The simulation results show that the OFDM has a good performance.[)

mimo with cm1-4 channels

Iterative Solutions is committed to the mission of developing accurate and efficient software for the simulation of modern communication systems. All software is licensed as open source software under the Lesser GPL. The code is designed to run in matlab, though the compute-intensive portions are written in C and Java. A wide variety of error control codes are supported, including turbo and LDPC codes, and an emphasis is placed on nonbinary modulation formats such as QAM and nonbinary continuous-phase FSK. The software goes beyond the usual error rate analysis by including tools for determining the Shannon capacity of arbitrary modulation formats.

实现正态分布的伪随机数发生器 实现正态分布的伪随机数发生器(To achieve normal distribution of the pseudo-random number generator to achieve normal distribution of the pseudo-random number generator)

end pointe detected whit the traditional algoritmh vol and ZCR, include a new algorit named Coper. end pointe detected whit the traditional algoritmh vol and ZCR, include a new algorit named Coper. end pointe detected whit the traditional algoritmh vol and ZCR, include a new algorit named Coper.

function to define the jacobian

该文件中包含二次规划中涉及的matlab程序，包含拉格朗日法以及起作用集法(This file contains the quadratic programming matlab procedures involved, including the Lagrangian method and set method works)

Kelley C.T. Solving nonlinear equations with Newton s method

ls ber performance OF OFDM CHANNEL WHICH shows why ls in ofdm is better than other.