mimo_ofdm.zip

  • 白龙亖
    了解作者
  • matlab
    开发工具
  • 188KB
    文件大小
  • zip
    文件格式
  • 0
    收藏次数
  • 10 积分
    下载积分
  • 2
    下载次数
  • 2021-04-27 11:02
    上传日期
MIMO-OFDM 含pdf,写的很详细,通信相关可以看看
mimo_ofdm.zip
  • mimo_ofdm
  • channel.m
    1.3KB
  • BitLoad.m
    1.8KB
  • ENC256.mat
    6.2KB
  • ~$ofdm.doc
    162B
  • ifft_cp_tx_blk+.m
    1.5KB
  • ifft_cp_tx_blk.m
    1.5KB
  • ofdm.doc
    74.5KB
  • fft_cp_rx_blk.m
    1.5KB
  • BitLoad.asv
    1.4KB
  • svd_decompose_channel.m
    1018B
  • EnergyTableInit.m
    1.4KB
  • ComputeSNR.m
    591B
  • Bpsk.fig
    25.4KB
  • chow_algo.m
    1.3KB
  • Project Report 359.pdf
    205.9KB
  • modulate.m
    1.7KB
  • EE359 Project.htm
    4.7KB
  • ENC64.mat
    1.6KB
  • website.txt
    123B
  • ENC16.mat
    568B
  • ENC2.mat
    256B
  • create_channel.m
    1.6KB
  • SISO_adaptive2.mat
    336B
  • campello_algo.m
    2.3KB
  • ResolvetheLastBit.m
    1.5KB
  • awgn.m
    3.1KB
  • Qpsk.fig
    17.9KB
  • OFDM Simulator.htm
    6.1KB
  • demodulate.m
    1.9KB
  • ENC4.mat
    320B
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/631ca7630a33813368174fa4/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/631ca7630a33813368174fa4/bg1.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">Adaptiv<span class="_ _0"></span>e<span class="_ _1"> </span>Loading<span class="_ _1"> </span>in<span class="_ _1"> </span>MIMO/OFDM<span class="_ _2"> </span>Systems</div><div class="t m0 x2 h3 y2 ff2 fs1 fc0 sc0 ls0 ws0">Prateek<span class="_ _3"> </span>Bansal<span class="_ _4"> </span>Andrew<span class="_ _3"> </span>Brzezinski</div><div class="t m0 x3 h4 y3 ff3 fs2 fc0 sc0 ls0 ws0">prateek@stanford.edu<span class="_ _5"> </span>brzezin@stanford.edu</div><div class="t m0 x4 h3 y4 ff2 fs1 fc0 sc0 ls0 ws0">Decem<span class="_ _0"></span>b<span class="_ _6"></span>er<span class="_ _3"> </span>13,<span class="_ _3"> </span>2001</div><div class="t m0 x5 h5 y5 ff4 fs1 fc0 sc0 ls0 ws0">Abstract</div><div class="t m0 x6 h4 y6 ff3 fs2 fc0 sc0 ls0 ws0">Orthogonal<span class="_ _7"> </span>F<span class="_ _8"></span>requency<span class="_ _9"> </span>Division<span class="_ _9"> </span>Multiplexing<span class="_ _9"> </span>(OFDM)<span class="_ _9"> </span>is<span class="_ _9"> </span>a<span class="_ _9"> </span>powerful<span class="_ _7"> </span>technique<span class="_ _7"> </span>employed<span class="_ _7"> </span>in<span class="_ _9"> </span>com-</div><div class="t m0 x6 h4 y7 ff3 fs2 fc0 sc0 ls0 ws0">munications<span class="_ _a"> </span>systems<span class="_ _3"> </span>su&#64256;ering<span class="_ _a"> </span>from<span class="_ _3"> </span>frequency<span class="_ _3"> </span>selectivity<span class="_ _8"></span>.<span class="_ _1"> </span>Com<span class="_ _0"></span>bined<span class="_ _3"> </span>with<span class="_ _3"> </span>m<span class="_ _0"></span>ultiple<span class="_ _3"> </span>antennas<span class="_ _a"> </span>at</div><div class="t m0 x6 h4 y8 ff3 fs2 fc0 sc0 ls0 ws0">the<span class="_ _9"> </span>transmitter<span class="_ _9"> </span>and<span class="_ _9"> </span>receiver<span class="_ _7"> </span>as<span class="_ _9"> </span>well<span class="_ _9"> </span>as<span class="_ _9"> </span>adaptive<span class="_ _7"> </span>mo<span class="_ _6"></span>dulation,<span class="_ _9"> </span>OFDM<span class="_ _9"> </span>proves<span class="_ _7"> </span>to<span class="_ _9"> </span>be<span class="_ _a"> </span>robust<span class="_ _9"> </span>against</div><div class="t m0 x6 h4 y9 ff3 fs2 fc0 sc0 ls0 ws0">channel<span class="_ _3"> </span>delay<span class="_ _3"> </span>spread.<span class="_ _b"> </span>F<span class="_ _8"></span>urthermore,<span class="_ _c"> </span>it<span class="_ _c"> </span>leads<span class="_ _3"> </span>to<span class="_ _c"> </span>signi&#64257;cant<span class="_ _3"> </span>data<span class="_ _c"> </span>rates<span class="_ _3"> </span>with<span class="_ _c"> </span>improv<span class="_ _0"></span>ed<span class="_ _c"> </span>bit<span class="_ _3"> </span>error</div><div class="t m0 x6 h4 ya ff3 fs2 fc0 sc0 ls0 ws0">performance<span class="_ _9"> </span>over<span class="_ _7"> </span>links<span class="_ _9"> </span>having<span class="_ _9"> </span>only<span class="_ _9"> </span>a<span class="_ _a"> </span>single<span class="_ _9"> </span>antenna<span class="_ _9"> </span>at<span class="_ _9"> </span>b<span class="_ _6"></span>oth<span class="_ _9"> </span>the<span class="_ _a"> </span>transmitter<span class="_ _9"> </span>and<span class="_ _a"> </span>receiver.</div><div class="t m0 x6 h4 yb ff3 fs2 fc0 sc0 ls0 ws0">This<span class="_ _7"> </span>pro<span class="_ _6"></span>ject<span class="_ _7"> </span>demonstrates<span class="_ _7"> </span>OFDM<span class="_ _7"> </span>with<span class="_ _9"> </span>adaptive<span class="_ _7"> </span>modulation<span class="_ _7"> </span>applied<span class="_ _7"> </span>to<span class="_ _7"> </span>Multiple-Input<span class="_ _9"> </span>Multiple-</div><div class="t m0 x6 h4 yc ff3 fs2 fc0 sc0 ls0 ws0">Output<span class="_ _3"> </span>(MIMO)<span class="_ _c"> </span>systems.<span class="_ _2"> </span>W<span class="_ _8"></span>e<span class="_ _3"> </span>apply<span class="_ _3"> </span>an<span class="_ _c"> </span>optimization<span class="_ _3"> </span>algorithm<span class="_ _3"> </span>to<span class="_ _3"> </span>obtain<span class="_ _3"> </span>a<span class="_ _c"> </span>bit<span class="_ _3"> </span>and<span class="_ _3"> </span>p<span class="_ _6"></span>ow<span class="_ _0"></span>er<span class="_ _3"> </span>al-</div><div class="t m0 x6 h4 yd ff3 fs2 fc0 sc0 ls0 ws0">location<span class="_ _3"> </span>for<span class="_ _a"> </span>each<span class="_ _a"> </span>subcarrier<span class="_ _3"> </span>assuming<span class="_ _a"> </span>instantaneous<span class="_ _9"> </span>channel<span class="_ _a"> </span>knowledge.<span class="_ _d"> </span>The<span class="_ _a"> </span>analysis<span class="_ _3"> </span>and<span class="_ _a"> </span>sim-</div><div class="t m0 x6 h4 ye ff3 fs2 fc0 sc0 ls0 ws0">ulation<span class="_ _3"> </span>is<span class="_ _c"> </span>considered<span class="_ _3"> </span>in<span class="_ _c"> </span>tw<span class="_ _0"></span>o<span class="_ _3"> </span>stages.<span class="_ _b"> </span>The<span class="_ _3"> </span>&#64257;rst<span class="_ _c"> </span>stage<span class="_ _3"> </span>inv<span class="_ _0"></span>olves<span class="_ _3"> </span>the<span class="_ _3"> </span>application<span class="_ _c"> </span>of<span class="_ _c"> </span>a<span class="_ _3"> </span>v<span class="_ _0"></span>ariable-rate</div><div class="t m0 x6 h4 yf ff3 fs2 fc0 sc0 ls0 ws0">v<span class="_ _8"></span>ariable-p<span class="_ _6"></span>ow<span class="_ _0"></span>er<span class="_ _7"> </span>MQAM<span class="_ _a"> </span>technique<span class="_ _9"> </span>for<span class="_ _a"> </span>a<span class="_ _9"> </span>Single-Input<span class="_ _a"> </span>Single-Output<span class="_ _a"> </span>(SISO)<span class="_ _a"> </span>OFDM<span class="_ _a"> </span>system.<span class="_ _c"> </span>This</div><div class="t m0 x6 h4 y10 ff3 fs2 fc0 sc0 ls0 ws0">is<span class="_ _9"> </span>compared<span class="_ _9"> </span>with<span class="_ _9"> </span>the<span class="_ _a"> </span>performance<span class="_ _9"> </span>of<span class="_ _a"> </span>&#64257;xed<span class="_ _9"> </span>OFDM<span class="_ _9"> </span>transmission<span class="_ _9"> </span>where<span class="_ _a"> </span>a<span class="_ _9"> </span>constant<span class="_ _7"> </span>rate<span class="_ _9"> </span>is<span class="_ _a"> </span>applied</div><div class="t m0 x6 h4 y11 ff3 fs2 fc0 sc0 ls0 ws0">to<span class="_ _3"> </span>each<span class="_ _a"> </span>sub<span class="_ _6"></span>carrier.<span class="_ _1"> </span>The<span class="_ _3"> </span>second<span class="_ _3"> </span>stage<span class="_ _3"> </span>applies<span class="_ _3"> </span>adaptive<span class="_ _a"> </span>mo<span class="_ _6"></span>dulation<span class="_ _3"> </span>to<span class="_ _3"> </span>a<span class="_ _3"> </span>general<span class="_ _3"> </span>MIMO<span class="_ _3"> </span>system</div><div class="t m0 x6 h4 y12 ff3 fs2 fc0 sc0 ls0 ws0">by<span class="_ _7"> </span>making<span class="_ _9"> </span>use<span class="_ _9"> </span>of<span class="_ _9"> </span>the<span class="_ _a"> </span>Singular<span class="_ _9"> </span>V<span class="_ _8"></span>alue<span class="_ _9"> </span>Decomp<span class="_ _6"></span>osition<span class="_ _7"> </span>to<span class="_ _a"> </span>separate<span class="_ _7"> </span>the<span class="_ _a"> </span>MIMO<span class="_ _9"> </span>channel<span class="_ _7"> </span>into<span class="_ _9"> </span>parallel</div><div class="t m0 x6 h4 y13 ff3 fs2 fc0 sc0 ls0 ws0">subchannels.<span class="_ _3"> </span>F<span class="_ _8"></span>or<span class="_ _7"> </span>a<span class="_ _7"> </span>two-input<span class="_ _7"> </span>an<span class="_ _0"></span>tenna,<span class="_ _7"> </span>tw<span class="_ _0"></span>o-output<span class="_ _7"> </span>antenna<span class="_ _7"> </span>system,<span class="_ _7"> </span>the<span class="_ _7"> </span>performance<span class="_ _7"> </span>is<span class="_ _7"> </span>compared</div><div class="t m0 x6 h4 y14 ff3 fs2 fc0 sc0 ls0 ws0">with<span class="_ _9"> </span>the<span class="_ _9"> </span>p<span class="_ _6"></span>erformance<span class="_ _9"> </span>of<span class="_ _9"> </span>a<span class="_ _9"> </span>system<span class="_ _a"> </span>using<span class="_ _9"> </span>selection<span class="_ _9"> </span>diversit<span class="_ _0"></span>y<span class="_ _9"> </span>at<span class="_ _9"> </span>the<span class="_ _a"> </span>transmitter<span class="_ _9"> </span>and<span class="_ _9"> </span>maximal<span class="_ _9"> </span>ratio</div><div class="t m0 x6 h4 y15 ff3 fs2 fc0 sc0 ls0 ws0">combining<span class="_ _7"> </span>at<span class="_ _a"> </span>the<span class="_ _9"> </span>receiver.</div><div class="t m0 x7 h5 y16 ff4 fs1 fc0 sc0 ls0 ws0">I.<span class="_ _c"> </span>Introduction</div><div class="t m0 x8 h5 y17 ff5 fs1 fc0 sc0 ls0 ws0">Ev<span class="_ _0"></span>olution<span class="_ _c"> </span>of<span class="_ _c"> </span>OFDM</div><div class="t m0 x8 h4 y18 ff3 fs2 fc0 sc0 ls0 ws0">F<span class="_ _8"></span>requency<span class="_ _3"> </span>Division<span class="_ _c"> </span>Multiplexing<span class="_ _c"> </span>(FDM)<span class="_ _c"> </span>has<span class="_ _3"> </span>b<span class="_ _6"></span>een<span class="_ _3"> </span>a<span class="_ _c"> </span>widely-used<span class="_ _3"> </span>technique<span class="_ _3"> </span>for<span class="_ _c"> </span>signal<span class="_ _3"> </span>transmission<span class="_ _c"> </span>in<span class="_ _3"> </span>fre-</div><div class="t m0 x8 h4 y19 ff3 fs2 fc0 sc0 ls0 ws0">quency<span class="_ _9"> </span>selective<span class="_ _9"> </span>channels.<span class="_ _c"> </span>In<span class="_ _a"> </span>essence,<span class="_ _a"> </span>FDM<span class="_ _a"> </span>divides<span class="_ _a"> </span>the<span class="_ _a"> </span>channel<span class="_ _9"> </span>bandwidth<span class="_ _a"> </span>into<span class="_ _9"> </span>sub<span class="_ _6"></span>c<span class="_ _0"></span>hannels<span class="_ _a"> </span>and<span class="_ _a"> </span>transmits</div><div class="t m0 x8 h4 y1a ff3 fs2 fc0 sc0 ls0 ws0">multiple<span class="_ _3"> </span>relatively<span class="_ _3"> </span>low<span class="_ _3"> </span>rate<span class="_ _c"> </span>signals<span class="_ _3"> </span>by<span class="_ _c"> </span>carrying<span class="_ _3"> </span>each<span class="_ _3"> </span>signal<span class="_ _3"> </span>on<span class="_ _c"> </span>a<span class="_ _c"> </span>separate<span class="_ _3"> </span>carrier<span class="_ _3"> </span>frequency<span class="_ _8"></span>.<span class="_ _b"> </span>T<span class="_ _8"></span>o<span class="_ _c"> </span>facilitate</div><div class="t m0 x8 h4 y1b ff3 fs2 fc0 sc0 ls0 ws0">separation<span class="_ _7"> </span>of<span class="_ _7"> </span>the<span class="_ _7"> </span>signals<span class="_ _7"> </span>at<span class="_ _7"> </span>the<span class="_ _7"> </span>receiv<span class="_ _0"></span>er,<span class="_ _7"> </span>the<span class="_ _7"> </span>carrier<span class="_ _7"> </span>frequencies<span class="_ _7"> </span>are<span class="_ _7"> </span>spaced<span class="_ _7"> </span>su&#64259;cien<span class="_ _0"></span>tly<span class="_ _7"> </span>far<span class="_ _7"> </span>apart<span class="_ _7"> </span>so<span class="_ _7"> </span>that<span class="_ _7"> </span>signal</div><div class="t m0 x8 h4 y1c ff3 fs2 fc0 sc0 ls0 ws0">spectra<span class="_ _9"> </span>do<span class="_ _9"> </span>not<span class="_ _a"> </span>ov<span class="_ _0"></span>erlap.<span class="_ _3"> </span>F<span class="_ _8"></span>urther,<span class="_ _9"> </span>in<span class="_ _a"> </span>order<span class="_ _9"> </span>to<span class="_ _9"> </span>separate<span class="_ _9"> </span>the<span class="_ _9"> </span>signals<span class="_ _9"> </span>with<span class="_ _9"> </span>readily<span class="_ _9"> </span>sizeable<span class="_ _9"> </span>&#64257;lters,<span class="_ _9"> </span>empty<span class="_ _9"> </span>sp<span class="_ _6"></span>ectral</div><div class="t m0 x8 h4 y1d ff3 fs2 fc0 sc0 ls0 ws0">regions<span class="_ _9"> </span>are<span class="_ _9"> </span>placed<span class="_ _9"> </span>b<span class="_ _6"></span>etw<span class="_ _0"></span>een<span class="_ _9"> </span>the<span class="_ _a"> </span>signals.<span class="_ _c"> </span>As<span class="_ _9"> </span>such,<span class="_ _9"> </span>the<span class="_ _9"> </span>resulting<span class="_ _a"> </span>spectral<span class="_ _a"> </span>e&#64259;ciency<span class="_ _9"> </span>of<span class="_ _a"> </span>the<span class="_ _9"> </span>system<span class="_ _a"> </span>is<span class="_ _9"> </span>quite<span class="_ _a"> </span>low.</div><div class="t m0 x8 h4 y1e ff3 fs2 fc0 sc0 ls0 ws0">In<span class="_ _7"> </span>order<span class="_ _e"> </span>to<span class="_ _7"> </span>solv<span class="_ _0"></span>e<span class="_ _7"> </span>the<span class="_ _e"> </span>bandwidth<span class="_ _7"> </span>e&#64259;ciency<span class="_ _7"> </span>problem,<span class="_ _7"> </span>orthogonal<span class="_ _e"> </span>frequency<span class="_ _e"> </span>division<span class="_ _7"> </span>multiplexing<span class="_ _e"> </span>was<span class="_ _e"> </span>prop<span class="_ _6"></span>osed,</div><div class="t m0 x8 h4 y1f ff3 fs2 fc0 sc0 ls0 ws0">which<span class="_ _3"> </span>emplo<span class="_ _0"></span>ys<span class="_ _3"> </span>orthogonal<span class="_ _3"> </span>tones<span class="_ _3"> </span>to<span class="_ _3"> </span>mo<span class="_ _6"></span>dulate<span class="_ _3"> </span>the<span class="_ _3"> </span>signals<span class="_ _3"> </span>[4].<span class="_ _2"> </span>The<span class="_ _3"> </span>tones<span class="_ _3"> </span>are<span class="_ _3"> </span>spaced<span class="_ _3"> </span>at<span class="_ _3"> </span>frequency<span class="_ _c"> </span>in<span class="_ _0"></span>terv<span class="_ _0"></span>als</div><div class="t m0 x8 h4 y20 ff3 fs2 fc0 sc0 ls0 ws0">equal<span class="_ _e"> </span>to<span class="_ _7"> </span>the<span class="_ _7"> </span>sym<span class="_ _0"></span>b<span class="_ _6"></span>ol<span class="_ _e"> </span>rate<span class="_ _7"> </span>and<span class="_ _e"> </span>are<span class="_ _7"> </span>capable<span class="_ _e"> </span>of<span class="_ _7"> </span>separation<span class="_ _e"> </span>at<span class="_ _7"> </span>the<span class="_ _e"> </span>receiver.<span class="_ _3"> </span>This<span class="_ _7"> </span>carrier<span class="_ _e"> </span>spacing<span class="_ _e"> </span>provides<span class="_ _e"> </span>optimum</div><div class="t m0 x8 h4 y21 ff3 fs2 fc0 sc0 ls0 ws0">spectral<span class="_ _9"> </span>e&#64259;ciency<span class="_ _8"></span>.<span class="_ _3"> </span>Although<span class="_ _9"> </span>OFDM<span class="_ _7"> </span>was<span class="_ _7"> </span>prop<span class="_ _6"></span>osed<span class="_ _7"> </span>in<span class="_ _7"> </span>the<span class="_ _7"> </span>1960&#8217;s<span class="_ _7"> </span>it<span class="_ _9"> </span>was<span class="_ _e"> </span>not<span class="_ _9"> </span>widely<span class="_ _7"> </span>employ<span class="_ _0"></span>ed<span class="_ _7"> </span>until<span class="_ _7"> </span>the<span class="_ _9"> </span>1990&#8217;s,</div><div class="t m0 x8 h4 y22 ff3 fs2 fc0 sc0 ls0 ws0">largely<span class="_ _c"> </span>b<span class="_ _6"></span>ecause<span class="_ _c"> </span>of<span class="_ _c"> </span>signi&#64257;cant<span class="_ _c"> </span>circuit<span class="_ _f"> </span>design<span class="_ _c"> </span>issues,<span class="_ _f"> </span>such<span class="_ _c"> </span>as<span class="_ _f"> </span>spurious<span class="_ _c"> </span>frequency<span class="_ _c"> </span>comp<span class="_ _6"></span>onents<span class="_ _c"> </span>and<span class="_ _c"> </span>linearity</div><div class="t m0 x8 h4 y23 ff3 fs2 fc0 sc0 ls0 ws0">of<span class="_ _3"> </span>ampli&#64257;ers.<span class="_ _b"> </span>T<span class="_ _8"></span>oday<span class="_ _8"></span>,<span class="_ _c"> </span>OFDM<span class="_ _3"> </span>is<span class="_ _c"> </span>a<span class="_ _c"> </span>ma<span class="_ _6"></span>jor<span class="_ _3"> </span>contender<span class="_ _3"> </span>for<span class="_ _3"> </span>4G<span class="_ _c"> </span>wireless<span class="_ _3"> </span>applications<span class="_ _c"> </span>with<span class="_ _3"> </span>signi&#64257;cant<span class="_ _3"> </span>p<span class="_ _6"></span>otential</div><div class="t m0 x8 h4 y24 ff3 fs2 fc0 sc0 ls0 ws0">performance<span class="_ _a"> </span>enhancements<span class="_ _7"> </span>over<span class="_ _7"> </span>existing<span class="_ _9"> </span>wireless<span class="_ _9"> </span>technology<span class="_ _8"></span>.</div><div class="t m0 x9 h4 y25 ff3 fs2 fc0 sc0 ls0 ws0">1</div></div><div class="pi" data-data='{"ctm":[1.568627,0.000000,0.000000,1.568627,0.000000,0.000000]}'></div></div> </body> </html>
评论
    相关推荐
    • MIMO
      MIMO雷达可以跑的,实际应用的数据资源
    • mimo-ofdm
      里面用ofdm技术和MIMO进行模型的简单搭建,适合初学者。
    • MIMO系统.zip
      这是一个MIMO系统的整体仿真,你们可以看看
    • MIMO课程课件
      MIMO课程课件,适用于无线通信mimo初学者
    • MIMO+DOA
      A Higher-Order Propagator Method for 2D-DOA Estimation in Massive MIMO Systems
    • mimo仿真
      mimo仿真代码,超级使用的代码,欢迎下载
    • MIMO通信系统分层空时码
      MIMO通信系统分层空时码通过MMSE算法进行仿真
    • MIMO
      这是一个关于通信原理MIMO的matlab代码。
    • mimo_channel.zip
      里面包含了MIMO的信道估计代码,可以通过matlab完整实现。
    • USB-COM(HL340).rar
      usb转串口,找了很久才找到,现在别的地方很难下到,要不用不了,我这个可以用 HL340D 的