usepackage[vlined,linesnumbered]{algorithm2e} % Algorithm
usepackage{algorithmic}
usepackage{algorithm}
usepackage{algcompatible}

begin{figure}[h]
small

hrule
vspace{2mm}
textbf{Reader Operation}
%vspace{1mm}

begin{algorithmic}[1]

    STATE $ws = 1$
    STATE FQwT([textquoteleft 0'],$ws$); FQwT([textquoteleft 1'],$ws$)
    STATE function $FQwT$(char [] $query,$ int $ws$)
    STATE $k = ID.length$
    STATE $L = query.length$
    STATE $c_g=k-L$
    STATE $s=log2(ws)$
    STATE broadcast([$query], s$)
    STATE $[winMatch,crcCheck] = $receiveResponses()
    IF{$nSuccess=0$}
    STATE{$Phase1$}
    IF{$isempty$($winMatch$)}
    STATE $nIdles ++$
    ELSE [$crcCheck = 0$]
    STATE $nCollisions ++$
    IF{$ws=1$}
    STATE $Store$ $c_g$ $with$ $query$ $into$ $LIFO$ $(c_g=k-L)$
    STATE $FQwT$([$query$, textquoteleft 0'],$ws$); FQwT([$query$, textquoteleft 1'],$ws$)
    ELSE
    STATE $ws = 1$
    STATE $FQwT$ ([$query$],$ws$); FQwT([$query$],$ws$)
    ENDIF
    ELSE [$crcCheck=1$]
    IF{$L + ws < k$}
    STATE $nGoons ++$
    STATE $ws=ws ++$
    STATE FQwT($[query,winMatch],ws$)
    ELSE  [$L + ws = k$]
    STATE $ws=1$
    STATE $nSuccess ++$
    ENDIF
    ENDIF
    ELSE
    STATE{$Phase2$}
    IF{isempty($winMatch$)}
    STATE $nIdles ++$
    ELSE[$crcCheck = 0$]
    STATE $nCollisions ++$
    STATE FQwT([$query$, textquoteleft 0'],$ws$); FQwT([$query$, textquoteleft 1'],$ws$)
    ELSE[$crcCheck = 1$]
    IF{$L + ws < k$}
    STATE $nGoons ++$
    STATE $ ws=f(c_g,L)$
    STATE $s= log2(ws)$
    STATE FQwT([$query$, $winMatch$],$ws$);
    ELSE[$L + ws = k$]
    STATE $nSuccess ++$
    ENDIF
    ENDIF
    ENDIF

end{algorithmic}

vspace{1mm}
hrule
vspace{2mm}

textbf{Tag Operation}
vspace{1mm}

begin{algorithmic}[1]

    STATE $receive(query, s)$
    STATE $L = query.length$
    STATE $ws=2^s$
    IF{$query = ID[0:L-1]$}
    STATE $CRC=$ crc($ID[L:L{+}ws]$)
    STATE backscatter($ID[L:L{+}ws],CRC$)
    ENDIF

end{algorithmic}
vspace{1mm}
hrule
caption{Pseudo-code of FQwT.
    First, the operation of the reader is presented, then the tag operation.}
label{Fig:dis53}
end{figure}