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来自「is about alamouti channel estimation」· HTM 代码 · 共 143 行 · 第 1/4 页
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<?xml version="1.0" encoding="iso-8859-1"?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head> <title>combiner.c</title> <link rel="stylesheet" type="text/css" href="highlight.css"/></head><body><pre><span class="line"> 1 </span><span class="dir">#include</span> <span class="dstr">"combiner.h"</span><span class="dir"></span><span class="line"> 2 </span><span class="dir"></span><span class="line"> 3 </span><span class="kwb">void</span> combine<span class="sym">(</span> <span class="kwb">float</span> recv_re<span class="sym">[</span><span class="num">2</span><span class="sym">][</span><span class="num">2</span><span class="sym">],</span> <span class="kwb">float</span> recv_im<span class="sym">[</span><span class="num">2</span><span class="sym">][</span><span class="num">2</span><span class="sym">],</span><span class="line"> 4 </span><span class="sym"></span> <span class="kwb">float</span> h_re<span class="sym">[</span><span class="num">2</span><span class="sym">][</span><span class="num">2</span><span class="sym">],</span> <span class="kwb">float</span> h_im<span class="sym">[</span><span class="num">2</span><span class="sym">][</span><span class="num">2</span><span class="sym">],</span><span class="line"> 5 </span><span class="sym"></span> <span class="kwb">float</span> symb_re<span class="sym">[</span><span class="num">2</span><span class="sym">],</span> <span class="kwb">float</span> symb_im<span class="sym">[</span><span class="num">2</span><span class="sym">] )</span><span class="line"> 6 </span><span class="sym">{</span><span class="line"> 7 </span><span class="sym"></span> symb_re<span class="sym">[</span><span class="num">0</span><span class="sym">] =</span> h_re<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">0</span><span class="sym">]*</span>recv_re<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">0</span><span class="sym">] +</span> h_im<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">0</span><span class="sym">]*</span>recv_im<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">0</span><span class="sym">] +</span><span class="line"> 8 </span><span class="sym"></span> h_re<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">1</span><span class="sym">]*</span>recv_re<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">1</span><span class="sym">] +</span> h_im<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">1</span><span class="sym">]*</span>recv_im<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">1</span><span class="sym">] +</span><span class="line"> 9 </span><span class="sym"></span> h_re<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">0</span><span class="sym">]*</span>recv_re<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">0</span><span class="sym">] +</span> h_im<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">0</span><span class="sym">]*</span>recv_im<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">0</span><span class="sym">] +</span><span class="line"> 10 </span><span class="sym"></span> h_re<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">1</span><span class="sym">]*</span>recv_re<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">1</span><span class="sym">] +</span> h_im<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">1</span><span class="sym">]*</span>recv_im<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">1</span><span class="sym">] ;</span><span class="line"> 11 </span><span class="sym"></span><span class="line"> 12 </span><span class="sym"></span> symb_im<span class="sym">[</span><span class="num">0</span><span class="sym">] =</span> h_re<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">0</span><span class="sym">]*</span>recv_im<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">0</span><span class="sym">] -</span> h_im<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">0</span><span class="sym">]*</span>recv_re<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">0</span><span class="sym">] -</span><span class="line"> 13 </span><span class="sym"></span> h_re<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">1</span><span class="sym">]*</span>recv_im<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">1</span><span class="sym">] +</span> h_im<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">1</span><span class="sym">]*</span>recv_re<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">1</span><span class="sym">] +</span><span class="line"> 14 </span><span class="sym"></span> h_re<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">0</span><span class="sym">]*</span>recv_im<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">0</span><span class="sym">] -</span> h_im<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">0</span><span class="sym">]*</span>recv_re<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">0</span><span class="sym">] -</span><span class="line"> 15 </span><span class="sym"></span> h_re<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">1</span><span class="sym">]*</span>recv_im<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">1</span><span class="sym">] +</span> h_im<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">1</span><span class="sym">]*</span>recv_re<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">1</span><span class="sym">] ;</span><span class="line"> 16 </span><span class="sym"></span><span class="line"> 17 </span><span class="sym"></span><span class="line"> 18 </span><span class="sym"></span> symb_re<span class="sym">[</span><span class="num">1</span><span class="sym">] =</span> h_re<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">1</span><span class="sym">]*</span>recv_re<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">0</span><span class="sym">] +</span> h_im<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">1</span><span class="sym">]*</span>recv_im<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">0</span><span class="sym">] -</span><span class="line"> 19 </span><span class="sym"></span> h_re<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">0</span><span class="sym">]*</span>recv_re<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">1</span><span class="sym">] -</span> h_im<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">0</span><span class="sym">]*</span>recv_im<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">1</span><span class="sym">] +</span><span class="line"> 20 </span><span class="sym"></span> h_re<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">1</span><span class="sym">]*</span>recv_re<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">0</span><span class="sym">] +</span> h_im<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">1</span><span class="sym">]*</span>recv_im<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">0</span><span class="sym">] -</span><span class="line"> 21 </span><span class="sym"></span> h_re<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">0</span><span class="sym">]*</span>recv_re<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">1</span><span class="sym">] -</span> h_im<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">0</span><span class="sym">]*</span>recv_im<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">1</span><span class="sym">] ;</span><span class="line"> 22 </span><span class="sym"></span><span class="line"> 23 </span><span class="sym"></span> symb_im<span class="sym">[</span><span class="num">1</span><span class="sym">] =</span> h_re<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">1</span><span class="sym">]*</span>recv_im<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">0</span><span class="sym">] -</span> h_im<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">1</span><span class="sym">]*</span>recv_re<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">0</span><span class="sym">] +</span><span class="line"> 24 </span><span class="sym"></span> h_re<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">0</span><span class="sym">]*</span>recv_im<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">1</span><span class="sym">] -</span> h_im<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">0</span><span class="sym">]*</span>recv_re<span class="sym">[</span><span class="num">0</span><span class="sym">][</span><span class="num">1</span><span class="sym">] +</span><span class="line"> 25 </span><span class="sym"></span> h_re<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">1</span><span class="sym">]*</span>recv_im<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">0</span><span class="sym">] -</span> h_im<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">1</span><span class="sym">]*</span>recv_re<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">0</span><span class="sym">] +</span><span class="line"> 26 </span><span class="sym"></span> h_re<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">0</span><span class="sym">]*</span>recv_im<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">1</span><span class="sym">] -</span> h_im<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">0</span><span class="sym">]*</span>recv_re<span class="sym">[</span><span class="num">1</span><span class="sym">][</span><span class="num">1</span><span class="sym">] ;</span><span class="line"> 27 </span><span class="sym"></span><span class="line"> 28 </span><span class="sym"></span> <span class="kwa">return</span><span class="sym">;⌨️ 快捷键说明
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