documentclass[12pt, a4paper, oneside]{book}
usepackage{listings}
usepackage{float}
usepackage{graphicx}
usepackage{color,soul}
usepackage[overlay,absolute]{textpos}
usepackage{tikz}
usepackage{amsmath}
usepackage{relsize}
usepackage{breqn}
usepackage{ragged2e}
setlength{TPHorizModule}{1cm}
setlength{TPVertModule}{1cm}



usepackage{bm,amsmath,amssymb,color,subfigure}
usepackage{fancyhdr, ifpdf}
pagestyle{fancyplain}

%renewcommand{baselinestretch}{1.7}

%% some redefination of the headers and footers
renewcommand{chaptermark}[1]%
             {markboth{#1}{}}
renewcommand{sectionmark}[1]%
             {markright{thesection #1}}
lhead[fancyplain{}{thepage}]%
      {fancyplain{}{rightmark}}
rhead[fancyplain{}{leftmark}]%
      {fancyplain{}{thepage}}
cfoot{}
sloppy

ifpdf
   usepackage[pdftex]{graphicx}
   pdfinfo{
      /Title (Title)
      /Subject (Subject)
      /Author (Ali Al-Shaikh, Tomoaki Ohtsuki)
      /Keywords (Q-Learning,Superposed Multicarrier Transmission)
   }
else
   usepackage{graphicx}
fi