main.tex

\documentclass[12pt,a4paper]{report}
\usepackage[utf8]{inputenc}
\usepackage[top=1in,bottom=1in,left=1.5in,right=1in]{geometry}
\usepackage{graphicx}
\usepackage{subcaption}
\usepackage{amsmath,amssymb,amsfonts,bbm}
\usepackage[hidelinks]{hyperref}
\usepackage{cite}
\usepackage{url} 
\usepackage{hyperref}
\usepackage{enumitem}
\usepackage{svg}
\usepackage{float}
\usepackage{enumitem}
\usepackage{booktabs}
\usepackage{placeins}
\usepackage[export]{adjustbox}
\usepackage{inputenc}
\usepackage{multicol}
\setlist[enumerate]{itemsep=0mm}
\DeclareUnicodeCharacter{202F}{\,} 
\newcommand\tab[1][1cm]{\hspace*{#1}} 
\setcounter{secnumdepth}{4}
\usepackage[pagestyles]{titlesec}
\titleformat
{\chapter} %command
[display]   %shape
{\Huge \bfseries} %format
{Chapter \thechapter} % chapter no format
{1ex} % separation between chapter 1 and introduction
{}
[
    \vspace{0ex}
]

\titlespacing*{\chapter}{0ex}{-2ex}{4ex}

\begin{document}
	\include{title}
    \include{intro}
    \include{chapter/chapter_1_Introduction}
    \include{chapter/chapter_2_Literature}
    \include{chapter/chapter_3_Analysis}
    \include{chapter/chapter_4_Methodology}
    \include{chapter/chapter_5_SystemDesignAndArchitecture} 
    \include{chapter/chapter_6_Experiments_1}
    \include{chapter/chapter_6_Experiments_2}
    \include{chapter/chapter_7_ExpectedOutcomes}
    \include{chapter/chapter_8_ActualOutcome}
    \include{chapter/chapter_9_ConclusionAndFuture}
    \bibliographystyle{IEEEtran}
    \bibliography{ref}
	\addcontentsline{toc}{chapter}{Bibliography}
    \renewcommand{\thesection}{\Alph{section}}
\end{document}