qpsk_viterbi_soft.rar

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modulation with vibertisoft in qpsk with bertool
qpsk_viterbi_soft.rar
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内容介绍
<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8"> <meta name="generator" content="pdf2htmlEX"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <link rel="stylesheet" href="https://static.pudn.com/base/css/base.min.css"> <link rel="stylesheet" href="https://static.pudn.com/base/css/fancy.min.css"> <link rel="stylesheet" href="https://static.pudn.com/prod/directory_preview_static/626ce4b81fd0a5795280596b/raw.css"> <script src="https://static.pudn.com/base/js/compatibility.min.js"></script> <script src="https://static.pudn.com/base/js/pdf2htmlEX.min.js"></script> <script> try{ pdf2htmlEX.defaultViewer = new pdf2htmlEX.Viewer({}); }catch(e){} </script> <title></title> </head> <body> <div id="sidebar" style="display: none"> <div id="outline"> </div> </div> <div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/626ce4b81fd0a5795280596b/bg1.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">4</div><div class="t m0 x1 h3 y2 ff2 fs1 fc0 sc0 ls0 ws0">Modulation<span class="_ _0"> </span>and<span class="_ _0"> </span>Coding</div><div class="t m0 x1 h4 y3 ff2 fs2 fc0 sc0 ls1 ws0">The<span class="_ _1"> </span>L<span class="_ _2"></span>TE<span class="_ _1"> </span>(Long<span class="_ _1"> </span>T<span class="_ _2"></span>erm<span class="_ _1"> </span>Evolution)<span class="_ _1"> </span>do<span class="_ _3"></span>wnlink<span class="_ _1"> </span>PHY<span class="_ _1"> </span>(Physical<span class="_ _1"> </span>Layer)<span class="_ _1"> </span>chain<span class="_ _1"> </span>can<span class="_ _1"> </span>be<span class="_ _1"> </span>vie<span class="_ _3"></span>wed<span class="_ _1"> </span>as<span class="_ _1"> </span>the</div><div class="t m0 x1 h4 y4 ff2 fs2 fc0 sc0 ls1 ws0">combination<span class="_ _4"> </span>of<span class="_ _4"> </span>processing<span class="_ _4"> </span>applied<span class="_ _4"> </span>to<span class="_ _4"> </span>the<span class="_ _4"> </span>Do<span class="_ _3"></span>wnlink<span class="_ _4"> </span>Shared<span class="_ _4"> </span>Channel<span class="_ _4"> </span>(DLSCH)<span class="_ _4"> </span>and<span class="_ _4"> </span>Physical</div><div class="t m0 x1 h4 y5 ff2 fs2 fc0 sc0 ls1 ws0">Do<span class="_ _3"></span>wnlink<span class="_ _4"> </span>Shared<span class="_ _1"> </span>Channel<span class="_ _4"> </span>(PDSCH).<span class="_ _1"> </span>DLSCH<span class="_ _4"> </span>processing<span class="_ _1"> </span>is<span class="_ _4"> </span>also<span class="_ _1"> </span>known<span class="_ _1"> </span>as<span class="_ _4"> </span>Do<span class="_ _3"></span>wnlink<span class="_ _1"> </span>Trans-</div><div class="t m0 x1 h4 y6 ff2 fs2 fc0 sc0 ls1 ws0">port<span class="_ _5"> </span>Channel<span class="_ _5"> </span>(T<span class="_ _3"></span>rCH)<span class="_ _5"> </span>processing.<span class="_ _5"> </span>It<span class="_ _5"> </span>includes<span class="_ _5"> </span>steps<span class="_ _5"> </span>in<span class="_ _3"></span>v<span class="_ _3"></span>olving<span class="_ _5"> </span>Cyclic<span class="_ _5"> </span>Redundanc<span class="_ _3"></span>y<span class="_ _5"> </span>Check<span class="_ _5"> </span>(CRC)</div><div class="t m0 x1 h4 y7 ff2 fs2 fc0 sc0 ls1 ws0">code<span class="_ _5"> </span>attachment,<span class="_ _5"> </span>data<span class="_ _5"> </span>subblock<span class="_ _1"> </span>processing,<span class="_ _5"> </span>channel<span class="_ _5"> </span>coding<span class="_ _5"> </span>based<span class="_ _5"> </span>on<span class="_ _5"> </span>turbo<span class="_ _5"> </span>coders,<span class="_ _1"> </span>rate<span class="_ _5"> </span>match-</div><div class="t m0 x1 h4 y8 ff2 fs2 fc0 sc0 ls1 ws0">ing,<span class="_ _4"> </span>Hybrid<span class="_ _1"> </span>Automatic<span class="_ _4"> </span>Repeat<span class="_ _4"> </span>Request<span class="_ _1"> </span>(HARQ)<span class="_ _4"> </span>processing,<span class="_ _4"> </span>and<span class="_ _4"> </span>the<span class="_ _1"> </span>reconstruction<span class="_ _4"> </span>of<span class="_ _4"> </span>code-</div><div class="t m0 x1 h4 y9 ff2 fs2 fc0 sc0 ls1 ws0">words.<span class="_ _5"> </span>The<span class="_ _6"> </span>code<span class="_ _3"></span>words<span class="_ _6"> </span>are<span class="_ _5"> </span>inputs<span class="_ _6"> </span>for<span class="_ _5"> </span>the<span class="_ _5"> </span>PDSCH<span class="_ _6"> </span>processing,<span class="_ _5"> </span>which<span class="_ _5"> </span>in<span class="_ _3"></span>v<span class="_ _3"></span>olv<span class="_ _3"></span>es<span class="_ _6"> </span>scrambling,<span class="_ _5"> </span>mod-</div><div class="t m0 x1 h4 ya ff2 fs2 fc0 sc0 ls2 ws0">ulation,<span class="_ _4"> </span>multi-antenna<span class="_ _4"> </span>Multiple<span class="_ _4"> </span>Input<span class="_ _4"> </span>Multiple<span class="_ _1"> </span>Output<span class="_ _4"> </span>(MIMO)<span class="_ _4"> </span>processing,<span class="_ _4"> </span>time<span class="_ _7"></span>&#8211;<span class="_ _7"></span>frequenc<span class="_ _3"></span>y</div><div class="t m0 x1 h4 yb ff2 fs2 fc0 sc0 ls2 ws0">resource<span class="_ _4"> </span>mapping,<span class="_ _4"> </span>and<span class="_ _4"> </span>Orthogonal<span class="_ _4"> </span>Frequenc<span class="_ _3"></span>y<span class="_ _4"> </span>Di<span class="_ _3"></span>vision<span class="_ _4"> </span>Multiple<span class="_ _3"></span>xing<span class="_ _4"> </span>(OFDM)<span class="_ _4"> </span>transmission.</div><div class="t m0 x1 h4 yc ff2 fs2 fc0 sc0 ls1 ws0">W<span class="_ _2"></span>e<span class="_ _4"> </span>hav<span class="_ _3"></span>e<span class="_ _4"> </span>subdi<span class="_ _3"></span>vided<span class="_ _4"> </span>the<span class="_ _1"> </span>components<span class="_ _4"> </span>of<span class="_ _4"> </span>this<span class="_ _4"> </span>two-step<span class="_ _4"> </span>DLSCH<span class="_ _1"> </span>and<span class="_ _4"> </span>PDSCH<span class="_ _4"> </span>processing<span class="_ _4"> </span>chain</div><div class="t m0 x1 h4 yd ff2 fs2 fc0 sc0 ls2 ws0">into<span class="_ _1"> </span>three<span class="_ _1"> </span>se<span class="_ _3"></span>gments,<span class="_ _1"> </span>which<span class="_ _1"> </span>are<span class="_ _1"> </span>discussed<span class="_ _1"> </span>in<span class="_ _1"> </span>the<span class="_ _5"> </span>next<span class="_ _1"> </span>three<span class="_ _1"> </span>chapters.</div><div class="t m0 x2 h4 ye ff2 fs2 fc0 sc0 ls1 ws0">In<span class="_ _1"> </span>this<span class="_ _4"> </span>chapter<span class="_ _3"></span>,<span class="_ _1"> </span>we<span class="_ _4"> </span>examine<span class="_ _1"> </span>the<span class="_ _4"> </span>modulation<span class="_ _1"> </span>and<span class="_ _4"> </span>coding<span class="_ _1"> </span>schemes<span class="_ _4"> </span>used<span class="_ _1"> </span>in<span class="_ _4"> </span>the<span class="_ _1"> </span>L<span class="_ _2"></span>TE<span class="_ _4"> </span>standard.</div><div class="t m0 x1 h4 yf ff2 fs2 fc0 sc0 ls1 ws0">These<span class="_ _1"> </span>include<span class="_ _4"> </span>all<span class="_ _1"> </span>the<span class="_ _1"> </span>combined<span class="_ _4"> </span>DLSCH<span class="_ _1"> </span>and<span class="_ _1"> </span>PDSCH<span class="_ _4"> </span>processing<span class="_ _1"> </span>steps,<span class="_ _1"> </span>excluding<span class="_ _4"> </span>the<span class="_ _1"> </span>MIMO</div><div class="t m0 x1 h4 y10 ff2 fs2 fc0 sc0 ls2 ws0">and<span class="_ _1"> </span>OFDM<span class="_ _1"> </span>operations.<span class="_ _1"> </span>Discussion<span class="_ _1"> </span>regarding<span class="_ _1"> </span>OFDM<span class="_ _1"> </span>and<span class="_ _1"> </span>MIMO<span class="_ _4"> </span>is<span class="_ _1"> </span>presented<span class="_ _1"> </span>in<span class="_ _1"> </span>the<span class="_ _1"> </span>next<span class="_ _1"> </span>two</div><div class="t m0 x1 h4 y11 ff2 fs2 fc0 sc0 ls2 ws0">chapters.<span class="_ _6"> </span>First,<span class="_ _6"> </span>we<span class="_ _6"> </span>will<span class="_ _6"> </span>examine<span class="_ _6"> </span>the<span class="_ _6"> </span>&#58882;rst<span class="_ _5"> </span>couple<span class="_ _6"> </span>of<span class="_ _6"> </span>operations<span class="_ _6"> </span>performed<span class="_ _6"> </span>in<span class="_ _5"> </span>PDSCH<span class="_ _6"> </span>processing,</div><div class="t m0 x1 h4 y12 ff2 fs2 fc0 sc0 ls1 ws0">including<span class="_ _1"> </span>scrambling<span class="_ _1"> </span>and<span class="_ _1"> </span>modulation.<span class="_ _1"> </span>Then<span class="_ _1"> </span>we<span class="_ _1"> </span>will<span class="_ _1"> </span>examine<span class="_ _1"> </span>T<span class="_ _3"></span>rCH<span class="_ _1"> </span>processing,<span class="_ _1"> </span>comprising<span class="_ _1"> </span>a</div><div class="t m0 x1 h4 y13 ff2 fs2 fc0 sc0 ls1 ws0">series<span class="_ _4"> </span>of<span class="_ _4"> </span>operations<span class="_ _4"> </span>that<span class="_ _4"> </span>map<span class="_ _4"> </span>logical<span class="_ _4"> </span>channels<span class="_ _1"> </span>and<span class="_ _4"> </span>user<span class="_ _4"> </span>bit<span class="_ _4"> </span>payload<span class="_ _4"> </span>to<span class="_ _4"> </span>codew<span class="_ _3"></span>ords,<span class="_ _4"> </span>which<span class="_ _4"> </span>are</div><div class="t m0 x1 h4 y14 ff2 fs2 fc0 sc0 ls1 ws0">passed<span class="_ _1"> </span>to<span class="_ _1"> </span>the<span class="_ _1"> </span>shared<span class="_ _1"> </span>physical<span class="_ _5"> </span>channel.</div><div class="t m0 x2 h4 y15 ff2 fs2 fc0 sc0 ls2 ws0">W<span class="_ _2"></span>e<span class="_ _8"> </span>will<span class="_ _4"> </span>create<span class="_ _8"> </span>MA<span class="_ _2"></span>TLAB</div><div class="t m0 x3 h4 y16 ff2 fs2 fc0 sc0 ls0 ws0">&#174;</div><div class="t m0 x4 h4 y15 ff2 fs2 fc0 sc0 ls2 ws0">programs<span class="_ _4"> </span>that<span class="_ _8"> </span>completely<span class="_ _8"> </span>specify<span class="_ _8"> </span>the<span class="_ _4"> </span>TrCH<span class="_ _4"> </span>processing<span class="_ _8"> </span>in<span class="_ _4"> </span>the</div><div class="t m0 x1 h4 y17 ff2 fs2 fc0 sc0 ls2 ws0">transmitter<span class="_ _5"> </span>and<span class="_ _1"> </span>the<span class="_ _5"> </span>receiver<span class="_ _2"></span>.<span class="_ _1"> </span>W<span class="_ _2"></span>e<span class="_ _1"> </span>will<span class="_ _5"> </span>use<span class="_ _1"> </span>the<span class="_ _5"> </span>MA<span class="_ _2"></span>TLAB<span class="_ _5"> </span>functions<span class="_ _1"> </span>to<span class="_ _5"> </span>study<span class="_ _1"> </span>the<span class="_ _5"> </span>effects<span class="_ _5"> </span>of<span class="_ _1"> </span>dif<span class="_ _3"></span>fer<span class="_ _3"></span>-</div><div class="t m0 x1 h4 y18 ff2 fs2 fc0 sc0 ls1 ws0">ent<span class="_ _1"> </span>modulation<span class="_ _4"> </span>schemes<span class="_ _1"> </span>and<span class="_ _1"> </span>different<span class="_ _1"> </span>coding<span class="_ _4"> </span>rates<span class="_ _1"> </span>on<span class="_ _1"> </span>the<span class="_ _4"> </span>Bit<span class="_ _1"> </span>Error<span class="_ _1"> </span>Rate<span class="_ _1"> </span>(BER)<span class="_ _4"> </span>performance</div><div class="t m0 x1 h4 y19 ff2 fs2 fc0 sc0 ls1 ws0">with<span class="_ _6"> </span>an<span class="_ _5"> </span>Additi<span class="_ _3"></span>ve<span class="_ _6"> </span>White<span class="_ _6"> </span>Gaussian<span class="_ _6"> </span>Noise<span class="_ _5"> </span>(A<span class="_ _2"></span>WGN)<span class="_ _6"> </span>channel<span class="_ _5"> </span>model.<span class="_ _6"> </span>These<span class="_ _5"> </span>operations<span class="_ _6"> </span>completely</div><div class="t m0 x1 h4 y1a ff2 fs2 fc0 sc0 ls1 ws0">specify<span class="_ _9"> </span>ho<span class="_ _3"></span>w<span class="_ _9"> </span>user<span class="_ _9"> </span>data<span class="_ _9"> </span>bits<span class="_ _9"> </span>are<span class="_ _9"> </span>processed<span class="_ _9"> </span>to<span class="_ _9"> </span>produce<span class="_ _9"> </span>the<span class="_ _9"> </span>input<span class="_ _9"> </span>symbols<span class="_ _9"> </span>for<span class="_ _9"> </span>the<span class="_ _9"> </span>subsequent</div><div class="t m0 x1 h4 y1b ff2 fs2 fc0 sc0 ls1 ws0">MIMO<span class="_ _1"> </span>and<span class="_ _5"> </span>OFDM<span class="_ _1"> </span>functional<span class="_ _1"> </span>blocks<span class="_ _1"> </span>for<span class="_ _5"> </span>transmission.<span class="_ _1"> </span>Details<span class="_ _1"> </span>of<span class="_ _a"> </span>MIMO<span class="_ _a"> </span>and<span class="_ _a"> </span>OFDM<span class="_ _1"> </span>are<span class="_ _a"> </span>then</div><div class="t m0 x1 h4 y1c ff2 fs2 fc0 sc0 ls2 ws0">examined<span class="_ _a"> </span>in<span class="_ _1"> </span>the<span class="_ _a"> </span>next<span class="_ _1"> </span>two<span class="_ _a"> </span>chapters.</div><div class="t m0 x1 h5 y1d ff3 fs3 fc0 sc0 ls0 ws0">Understanding<span class="_ _6"> </span>LTE<span class="_ _5"> </span>with<span class="_ _5"> </span>MA<span class="_ _3"></span>TLAB</div><div class="t m0 x3 h5 y1e ff3 fs3 fc0 sc0 ls0 ws0">&#174;</div><div class="t m0 x5 h5 y1d ff3 fs3 fc0 sc0 ls0 ws0">:<span class="_ _5"> </span>F<span class="_ _3"></span>r<span class="_ _b"></span>om<span class="_ _5"> </span>Mathematical<span class="_ _5"> </span>Modeling<span class="_ _6"> </span>to<span class="_ _5"> </span>Simulation<span class="_ _5"> </span>and<span class="_ _5"> </span>Prototyping<span class="ff2 ls3">,<span class="_ _6"> </span>First<span class="_ _5"> </span>Edition.</span></div><div class="t m0 x1 h5 y1f ff2 fs3 fc0 sc0 ls4 ws0">Houman<span class="_ _5"> </span>Zarrinkoub<span class="_ _b"></span>.</div><div class="t m0 x1 h5 y20 ff2 fs3 fc0 sc0 ls0 ws0">&#169;<span class="_ _5"> </span>2014<span class="_ _6"> </span>John<span class="_ _5"> </span>Wiley<span class="_ _6"> </span>&amp;<span class="_ _5"> </span>Sons,<span class="_ _5"> </span>Ltd.<span class="_ _5"> </span>Published<span class="_ _6"> </span>2014<span class="_ _5"> </span>by<span class="_ _5"> </span>John<span class="_ _5"> </span>Wile<span class="_ _3"></span>y<span class="_ _6"> </span>&amp;<span class="_ _5"> </span>Sons,<span class="_ _5"> </span>Ltd.</div></div><div class="pi" data-data='{"ctm":[1.961964,0.000000,0.000000,1.961964,0.000000,0.000000]}'></div></div> </body> </html>
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