Python - Virtual Environment
Python的虚拟环境（virtual environment）是一个独立的Python运行环境。在一个独立的环境中，可以正常安装所需要的数据包（如使用pip等）。既不受系统环境的影响，也不会对系统环境产生影响。具体地，创建虚拟环境就是把系统Python环境复制到所创建的独立环境中。当进入一个虚拟环境时，virtualenv会修改相关的环境变量，让python和pip指向当前的独立环境。 创建独 …
Posts
Emacs - Doxygen
Introduction Doxygen1 is a powerful tool to document the source codes. In principle, it parses the specially formated comments from the source codes and then produces very professional documents. Up …
Python - TDoc
Introduction In order to facilitate the tdoc. related processing, I wrote a simple module using Python, termed tdoc, based on Builtin modules, os, functools, multiprocessing, argparse; and 3rd party …
Orthogonal Matching Pursuit (OMP)
Matching pursuit (MP) and its improvement orthogonal matching pursuit (OMP) are both popular algorithms in compressive sensing (CS). Compared to MP, OMP can offer better performance, e.g. in respects …
Linux - Makefile
As is well-known, makefile is a text file which specifies the behavior of make. According to the rules in makefile, a project can be automatically built in a fairly smart way. Given a project, …
Least Square and Its Iterative Approach (RLS)
Introduction As is well-known, least square (LS) is the optimal linear unbiased estimator, which plays an extremely important role in the classic estimation theory. This document motivates to …
Fourier Transform
Fourier Series Continuous Fourier Series \begin{align*} \tilde{x}(t) &= \frac{1}{T} \sum_{k=-\infty}^{\infty}X_a \left( k\frac{2\pi}{T} \right) e^{j\frac{2\pi}{T}kt} \\ X_a \left( k\frac{2\pi}{T} …
LaTeX - Pgf/Tikz
Introduction Pgf/tikz is an excellent LaTeX package to plot high quality graphs. This post just summaries its basic usages. Installation Pgf/Tikz is a built-in package in the texlive. As long as …
TR38.901
3GPP TR38.901 offers the guidance and methodology of channel modelling, including both system-level simulation (SLS) and link-level simulation (LLS). Coordinate systems Global coordinate system (GCS) …
Python - QAM
Introduction In order to structure the utility relating to constellation modulation, I wrote a class Quadrature_Amplitude_Modulation in Python. Source code import numpy as np import matplotlib.pyplot …