Page Layout ⇒ space between chapter and chapter name

[prajeeshprakashp]

Code: Select all

\documentclass[12pt,a4paper]{report}
\usepackage[a4paper,hmargin={3cm,2.5cm},vmargin={2.5cm,2.5cm}]{geometry}
\usepackage{graphicx}
\usepackage{fancyhdr}
\usepackage{setspace}
\usepackage{titlesec}
\renewcommand{\bibname}{REFERENCES}
\pagestyle{fancy}
\lhead{\tiny THESIS PRELIMINARY REPORT PART I}
\chead{}
\rhead{\tiny SOFTWARE DEFINED RADIO }
\renewcommand{\footrulewidth}{0.4pt}
\lfoot{\tiny DEPT. OF ECE }
\cfoot{\thepage}
\rfoot{}
\begin{document}
\doublespacing
\titleformat{\chapter}[display]
  {\normalfont\huge\bfseries\centering}
  {\chaptertitlename\ \thechapter}{20pt}{\Huge}
	\titlespacing*{\chapter}{0pt}{-40pt}{40pt}
\begin{abstract}
Digital communications..
\end{abstract}
\tableofcontents
\thispagestyle{empty}

\chapter{\textbf{Introduction}}
\setcounter{page}{1}
Digital communications devices designed with application-specific integrated circuit (ASIC)......

i need to know how to reduce the line space between chapter number and chapter title name

[Johannes_B]

The chaterhead is tyeset doublespaced, just like you ordered it to be. Use \singlespacing when defining the titleformat.