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<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/626940df4f8811599e1dba95/bg1.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">QPSK<span class="_ _0"> </span><span class="ff2 sc1">调制解调完整程序（配有注释）</span></div><div class="t m0 x1 h4 y3 ff3 fs1 fc0 sc0 ls0 ws0"></div><div class="t m0 x1 h4 y4 ff3 fs1 fc0 sc0 ls0 ws0"></div><div class="t m0 x1 h5 y5 ff3 fs1 fc0 sc0 ls0 ws0"><span class="ff2">假定接收端已经实现载波同步，位同步（盲信号解调重点要解决的问题：载</span></div><div class="t m0 x1 h5 y6 ff2 fs1 fc0 sc0 ls0 ws0">波同步（<span class="ff3"><span class="_ _1"> </span></span>环（未见到相关代码）），位同步（<span class="ff3"><span class="_ _1"> </span></span>算法（未见相</div><div class="t m0 x1 h5 y7 ff2 fs1 fc0 sc0 ls0 ws0">关代码）），帧同步）</div><div class="t m0 x1 h4 y8 ff3 fs1 fc0 sc0 ls0 ws0"><span class="_ _2"></span></div><div class="t m0 x1 h4 y9 ff3 fs1 fc0 sc0 ls0 ws0"></div><div class="t m0 x1 h4 ya ff3 fs1 fc0 sc0 ls0 ws0"></div><div class="t m0 x1 h5 yb ff3 fs1 fc0 sc0 ls0 ws0"><span class="ff2">码数率为<span class="_ _1"> </span></span> <span class="ff2">原码个数</span></div><div class="t m0 x1 h4 yc ff3 fs1 fc0 sc0 ls0 ws0">!"#$%</div><div class="t m0 x1 h4 yd ff3 fs1 fc0 sc0 ls0 ws0">#&</div><div class="t m0 x1 h4 ye ff3 fs1 fc0 sc0 ls0 ws0">!"%'(</div><div class="t m0 x1 h4 yf ff3 fs1 fc0 sc0 ls0 ws0">!"%#</div><div class="t m0 x1 h4 y10 ff3 fs1 fc0 sc0 ls0 ws0"></div><div class="t m0 x1 h4 y11 ff3 fs1 fc0 sc0 ls0 ws0">!"%</div><div class="t m0 x1 h4 y12 ff3 fs1 fc0 sc0 ls0 ws0"></div><div class="t m0 x1 h4 y13 ff3 fs1 fc0 sc0 ls0 ws0"></div><div class="t m0 x1 h5 y14 ff3 fs1 fc0 sc0 ls0 ws0">)<span class="ff2">同时单极性码转为双极性码</span></div><div class="t m0 x1 h4 y15 ff3 fs1 fc0 sc0 ls0 ws0">#&</div><div class="t m0 x1 h4 y16 ff3 fs1 fc0 sc0 ls0 ws0">"$*%#</div><div class="t m0 x1 h4 y17 ff3 fs1 fc0 sc0 ls0 ws0">!"%#</div><div class="t m0 x1 h4 y18 ff3 fs1 fc0 sc0 ls0 ws0">+"%#</div><div class="t m0 x1 h4 y19 ff3 fs1 fc0 sc0 ls0 ws0">+",#%#</div><div class="t m0 x1 h4 y1a ff3 fs1 fc0 sc0 ls0 ws0"></div><div class="t m0 x1 h4 y1b ff3 fs1 fc0 sc0 ls0 ws0">+"%-#</div><div class="t m0 x1 h4 y1c ff3 fs1 fc0 sc0 ls0 ws0">+",#%-#</div><div class="t m0 x1 h4 y1d ff3 fs1 fc0 sc0 ls0 ws0"></div><div class="t m0 x1 h4 y1e ff3 fs1 fc0 sc0 ls0 ws0"></div><div class="t m0 x1 h4 y1f ff3 fs1 fc0 sc0 ls0 ws0">!"%#</div><div class="t m0 x1 h4 y20 ff3 fs1 fc0 sc0 ls0 ws0">"-#%#</div><div class="t m0 x1 h4 y21 ff3 fs1 fc0 sc0 ls0 ws0">"%#</div><div class="t m0 x1 h4 y22 ff3 fs1 fc0 sc0 ls0 ws0"></div><div class="t m0 x1 h4 y23 ff3 fs1 fc0 sc0 ls0 ws0">"-#%-#</div><div class="t m0 x1 h4 y24 ff3 fs1 fc0 sc0 ls0 ws0">"%-#</div><div class="t m0 x1 h4 y25 ff3 fs1 fc0 sc0 ls0 ws0"></div><div class="t m0 x1 h4 y26 ff3 fs1 fc0 sc0 ls0 ws0"></div><div class="t m0 x1 h4 y27 ff3 fs1 fc0 sc0 ls0 ws0"></div><div class="t m0 x1 h5 y28 ff3 fs1 fc0 sc0 ls0 ws0">.<span class="ff2">，此过程称为成形。成形的意思就是实现由消息到波形的</span></div><div class="t m0 x1 h5 y29 ff2 fs1 fc0 sc0 ls0 ws0">转换，以便发射，脉冲成形应该是在基带调制之后。</div><div class="t m0 x1 h5 y2a ff3 fs1 fc0 sc0 ls0 ws0">.)/* $<span class="ff2">明白了，</span>.<span class="_ _1"> </span><span class="ff2">为过采样率。它</span></div><div class="t m0 x1 h5 y2b ff2 fs1 fc0 sc0 ls0 ws0">等于 采样率<span class="_ _1"> </span><span class="ff3">0</span>码速率。</div><div class="t m0 x1 h5 y2c ff3 fs1 fc0 sc0 ls0 ws0">#&.1<span class="ff2">采样点数目</span><span class="ff2">过采样率</span>1<span class="ff2">原码数目</span></div></div></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div>
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QPSK调制解调完整程序.rar
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- 2018-10-16 09:32上传日期
QPSK调试解调的MATLAB源程序，MATLAB的源程序，可供大家参考
QPSK调制解调完整程序.rar
- QPSK调制解调完整程序.doc33KB
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