Initial commit

coder.lua

@@ -0,0 +1,38 @@
+input_code = {1, 0, 1, 1, 1, 1, 0, 0, 1}
+
+-- Logical sum
+function m2s(a, b)
+  if a+b == 2 then
+    return 0
+  else
+    return a+b
+  end
+end
+
+function coder(input_code, verbose)
+  register = {0, 0, 0}
+  result = {}
+  states = {}
+
+  for i, code_digit in ipairs(input_code) do
+    register[#register+1] = code_digit
+    state = register[#register-1]..register[#register-2]
+    if verbose then
+      print(i..'-ое состояние - '..state)
+    end
+    states[#states + 1] = state
+
+    result1 = m2s(m2s(register[#register], register[#register-1]), register[#register-2])
+    result2 = m2s(register[#register], register[#register-2])
+
+    result[#result+1] = result1..result2
+  end
+
+  return result, states
+end
+
+result, states = coder(input_code)
+
+for _, v in ipairs(states) do print(v..' ') end
+print('Код на выходе кодера:')
+for _, v in ipairs(result) do io.write(v..' ') end

term_paper.tex

@@ -0,0 +1,156 @@
+\documentclass[a4paper, 12pt]{article}
+
+\usepackage{mathtext}
+\usepackage[T2A]{fontenc}
+\usepackage[utf8]{inputenc}
+\usepackage[russian]{babel}
+
+\usepackage{amsmath}
+\usepackage{titlesec}
+\usepackage{scrextend}
+\usepackage{graphicx}
+\usepackage{tikz}
+
+\DeclareSymbolFont{T2Aletters}{T2A}{cmr}{m}{it}
+\graphicspath{ {./images/} }
+
+% Установки для отрисовки решеток кодера
+\tikzstyle{lightedge}=[dashed]
+\tikzstyle{mainedge}=[solid]
+\tikzstyle{inputBit}=[rectangle,fill=red, text=white]
+\tikzstyle{outputBit}=[rectangle,fill=blue, text=white]
+\tikzstyle{pointer}=[orange,->,dashed]
+
+\newcounter{ctra}
+\newcommand{\trellisEdges}[2]{%
+  \setcounter{ctra}{#2}
+  \pgfmathtruncatemacro{\xplusone}{#1 + 1}
+  \ifodd\value{ctra}
+      \draw[mainedge] (s#1#2) -- (s\xplusone2);
+  \else
+      \draw[mainedge] (s#1#2) -- (s\xplusone0);
+  \fi%
+  \ifodd\value{ctra}
+      \draw[lightedge] (s#1#2) -- (s\xplusone3);
+  \else
+      \draw[lightedge] (s#1#2) -- (s\xplusone1);
+  \fi%
+}
+
+% #1=x; #2=y; #3=In; #4=Out
+\newcommand{\trellisInOut}[4]{
+  \node[inputBit] (in#1) at (#1+0.5,5) {#3};
+  \node[outputBit] (out#1) at (#1+0.5,6) {#4};
+  \draw[pointer] (in#1) -- (#1+0.5,#2);
+}
+
+
+\author{Анатолий Копыл}
+\title{Курсовая работа}
+
+\begin{document}
+
+\section{Исходные данные}
+\[ m=41 \]
+\begin{center}
+  \begin{tabular}{ | p{5cm} | p{5cm} | p{5cm} | } 
+    \hline
+    Предельные уровни аналогового сигнала \(a_{min}\), \(a_{max}\) (В) & \(a_{max}=25,6\) В;\newline\(a_{min}=-25,6\) В & Внести свои данные \\
+    \hline
+    Верхняя частота спектра аналогового сигнала \(f_В\) & \(f_В =(1+m\cdot 10^{-2})\cdot 10^4\) & \(f_В =14100\) \\ 
+    \hline
+    Заданный уровень квантования & \(j=500-3\cdot m\) & 377 \\
+    \hline
+    Спектральная плотность мощности флуктуационной помехи & 41 & \(N_0=2,3\cdot 10^{-7}\, В^2/Гц\)\\
+    \hline
+    q - номер тактового интервала ошибки & \(q=m\mod{3}+1\) & \(q=3\)\\
+    \hline
+    Вид модуляции & КАМ-16 & \\
+    \hline
+  \end{tabular}
+\end{center}
+
+\section{Аналого-цифровой преобразователь}
+\[ \Delta t \leq \frac{1}{2f_B}=\frac1 {2\cdot 14100} = 3,546\cdot 10^{-5}\, с \]
+\[ f_d=\frac{1}{\Delta t}\geq 2f_B=\frac{1}{3,546\cdot 10^{-5}}=28200 \]
+\[ L=2^9 = 512 \]
+\[ 377_{10}=101111001_2 \]
+
+\section{Кодер}
+\begin{center}
+  \includegraphics[scale=0.8]{coder}
+
+  \begin{tabular}{ | c | c | c | c | c | c | c | c | c | c | }
+    \hline
+    Входной сигнал &1&0&1&1&1&1&0&0&1\\
+    \hline
+    Выходной сигнал &11&10&00&01&10&10&01&11&11\\
+    \hline
+  \end{tabular}
+\end{center}
+
+\begin{tikzpicture}[x=1.2cm, y=-1cm]
+    \node at (-0.5,0) [left] {$s_1=00$};
+    \node at (-0.5,1) [left] {$s_2=10$};
+    \node at (-0.5,2) [left] {$s_3=01$};
+    \node at (-0.5,3) [left] {$s_4=11$};
+
+    % Nodes
+    \foreach \x in {0,...,9} {
+        \node at (\x,-.7) {$\x$};
+        \foreach \y in {0,...,3} {
+            \node (s\x\y) at (\x,\y) [circle,fill=blue] {};
+        }
+    }
+
+    % Edges
+    \trellisEdges{0}{0}
+    \trellisEdges{1}{0}
+    \trellisEdges{1}{1}
+    \trellisEdges{2}{0}
+    \trellisEdges{2}{1}
+    \trellisEdges{2}{2}
+    \trellisEdges{2}{3}
+    \trellisEdges{3}{0}
+    \trellisEdges{3}{1}
+    \trellisEdges{3}{2}
+    \trellisEdges{3}{3}
+    \trellisEdges{4}{0}
+    \trellisEdges{4}{1}
+    \trellisEdges{4}{2}
+    \trellisEdges{4}{3}
+    \trellisEdges{5}{0}
+    \trellisEdges{5}{1}
+    \trellisEdges{5}{2}
+    \trellisEdges{5}{3}
+    \trellisEdges{6}{0}
+    \trellisEdges{6}{1}
+    \trellisEdges{6}{2}
+    \trellisEdges{6}{3}
+    \trellisEdges{7}{0}
+    \trellisEdges{7}{1}
+    \trellisEdges{7}{2}
+    \trellisEdges{7}{3}
+    \trellisEdges{8}{0}
+    \trellisEdges{8}{1}
+    \trellisEdges{8}{2}
+    \trellisEdges{8}{3}
+
+    % Inputs and Outputs
+    \node at (-0,5) [left] {Входной бит};
+    \node at (-0,6) [left] {Выходной бит};
+
+    \trellisInOut{0}{0.5}{1}{11}
+    \trellisInOut{1}{1.5}{0}{10}
+    \trellisInOut{2}{1.5}{1}{00}
+    \trellisInOut{3}{2}{1}{01}
+    \trellisInOut{4}{3}{1}{10}
+    \trellisInOut{5}{3}{1}{10}
+    \trellisInOut{6}{2.5}{1}{01}
+    \trellisInOut{7}{1}{0}{11}
+    \trellisInOut{8}{0}{1}{11}
+\end{tikzpicture}
+
+
+
+\end{document}