CODES

基于LANDMARC的定位系统上进行的算法复杂度的减小的优化，包括了具体的优化后系统的实现，误差前后对比，改文章还提出了一种adaptive的定位算法，更利于外部变化环境下(In wireless networks, a client’s locations can be estimated using signal strength received from signal transmitters. Static fingerprint-based techniques are commonly used for location estimation, in which a radio map is built by calibrating signal-strength values in the offline phase. These values, compiled into deterministic or probabilistic models, are used for online localization. However, the radio map can be outdated when signal-strength values change over time due to environmental dynamics, and repeated data calibration is infeasible or expensive. In this paper, we present a novel algorithm, known as Location Estimation using Model Trees (LEMT), to reconstruct a radio map by using real-time signal-strength readings received at the reference points. This algorithm can take real-time signal-strength values at each time point into account and make use of the dependency between the estimated locations and reference points. We show that this technique can effectively accommodat)

该程序能够产生矩形窗，实现滤波器的共能。(The procedure can have a rectangular window, to achieve a total filter capacity.)

Mathematics concepts for electrical engineers

Speech oscilloscope using matlab

数据白化处理matlab程序，内有注释，简单易懂，适用于初学者(Data whitening processing matlab program with annotations)

利用数据结构的二叉树概念编写的MATLAB程序实现HUFFMAN编码。(Binary tree data structure using the concept of the preparation of the MATLAB program Huffman coding.)

mfcc coefficient means mel frequency cepstral coefficient

fbp算法是一种新的高效的SAR成像算法，对传统算法有很好的适应性(fbp algorithm is a new and efficient SAR imaging algorithm, the traditional algorithm has good adaptability)

SMART ANTENNA DESIGN FOR WIRELESS ALGORITHM USING DIRECT MATRIX INVERSION ALGORITHM

实现用systerm generation 完成fft变换。原理清晰，但是结构相对复杂，请大家认真看原理，来自日本书。(Systerm generation completed using fft transform. Principles of clarity, but the structure is relatively complex, please look carefully the principle of everybody, from the Japanese book.)