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<DIV align=center><B><IMG height=38 src="main.files/welcome4.gif"
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size=4>欢迎来到...</FONT></B></DIV></TD>
<TD width="54%" bgColor=#ffffff height="18"><FONT size=4><B><FONT face=楷体_GB2312
color=#000066>本期技术讲座：</FONT></B></FONT><B></B></TD>
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<TD width="54%" bgColor=#ffffff height="24"><B><FONT face=宋体
color=#0000cc> <FONT
size=5>扩频通信</FONT></FONT></B></TD></TR>
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<TD width="82%" height="18"><B><SPAN lang=EN-US
style="COLOR: #333399"><FONT face=宋体 color=#000066
size=4>第一讲 </FONT></SPAN><FONT color=#000080>
<a href="s01.htm">扩频通信系统概述</a></FONT><SPAN
lang=EN-US style="COLOR: #333399"><FONT face=宋体
color=#000066 size=4> </FONT></SPAN></B></TD></TR>
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<TD width="18%" height="16"><FONT face=宋体></FONT></TD>
<TD width="82%" height="16"><FONT face=宋体></FONT></TD></TR>
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<TD width="82%" height="16"></TD></TR>
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<TD width="18%" height="18"><FONT face=宋体></FONT></TD>
<TD width="82%" height="18"><B><SPAN lang=EN-US
style="COLOR: #333399"><FONT face=宋体 color=#000066
size=4>第二讲 </FONT></SPAN><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">
<a href="s02.htm">扩展频谱通信的基本概念</a></SPAN><SPAN
lang=EN-US style="COLOR: #333399"><FONT face=宋体
color=#000066 size=4> <SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></FONT></SPAN></B></TD></TR>
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<TD width="18%" height="16"><FONT face=宋体></FONT></TD>
<TD width="82%" height="16"><FONT face=宋体><FONT
size=2>2.1</FONT><FONT color=#0000ff size=2>
</FONT><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman"><FONT
size=2><a href="s02.htm#2.1 扩展频谱通信的定义">扩展频谱通信的定义</a></FONT></SPAN></FONT></TD></TR>
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<TD width="18%" height="16"><FONT face=宋体></FONT></TD>
<TD width="82%" height="16"><FONT face=宋体><FONT
size=2>2.2</FONT><FONT color=#0000ff size=2>
</FONT><FONT size=2><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">
<a href="s02.htm#2.2 扩频通信的理论基础">扩频通信的理论基础</a></SPAN></FONT></FONT></TD></TR>
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<TD width="18%" height="16"><FONT face=宋体></FONT></TD>
<TD width="82%" height="16"><FONT face=宋体><FONT size=2>2.3
<SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">
<a href="s02.htm#2.3 扩频通信的主要性能指标">扩频通信的主要性能指标</a></SPAN></FONT></FONT></TD></TR>
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<TD width="82%" height="18"><B><SPAN lang=EN-US
style="COLOR: #333399"><FONT face=宋体 color=#000066
size=4>第三讲 <SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></FONT><FONT
face=宋体><O:P></O:P></FONT><O:P></O:P></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman"><FONT
size=3><a href="s03.htm">扩展频谱通信的主要特点</a></FONT></SPAN></B></TD></TR>
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<TD width="18%" height="16"><FONT face=宋体></FONT></TD>
<TD width="82%" height="16"><FONT size=2>3.1 <SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">
<a href="s03.htm#3.1 易于重复使用频率，提高了无线频谱利用率">易于重复使用频率，提高了无线频谱利用率</a></SPAN></FONT></TD></TR>
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<TD width="18%" height="16"><FONT face=宋体></FONT></TD>
<TD width="82%" height="16"><FONT size=2>3.2 <SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">
<a href="s03.htm#3.2 抗干扰性强，误码率低">抗干扰性强，误码率低</a></SPAN></FONT></TD></TR>
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<TD width="18%" height="16"><FONT face=宋体></FONT></TD>
<TD width="82%" height="16"><FONT size=2>3.3 <SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">
<a href="s03.htm#3.3 隐蔽性好，对各种窄带通信系统的干扰很小">隐蔽性好，对各种窄带通信系统的干扰很小</a></SPAN></FONT></TD></TR>
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<TD width="18%" height="16"><FONT face=宋体></FONT></TD>
<TD width="82%" height="16"><FONT face=宋体><FONT size=2><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">3.4
<a href="s03.htm#3.4 可以实现码分多址">可以实现码分多址</a></SPAN></FONT></FONT></TD></TR>
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<TD width="18%" height="16"><FONT face=宋体></FONT></TD>
<TD width="82%" height="16"><FONT face=宋体><FONT size=2><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">3.5
<a href="s03.htm#3.5 抗多径干扰">抗多径干扰</a></SPAN></FONT></FONT></TD></TR>
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<TD width="18%" height="16"><FONT face=宋体></FONT></TD>
<TD width="82%" height="16"><FONT face=宋体><FONT size=2><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">3.6
<a href="s03.htm#3.6 能精确地定时和测距">能精确地定时和测距</a></SPAN></FONT></FONT></TD></TR>
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<TD width="18%" height="16"><FONT face=宋体></FONT></TD>
<TD width="82%" height="16"><FONT face=宋体><FONT size=2><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">3.7
<a href="s03.htm#3.7 适合数字话音和数据传输，以及开展多种通信业务">适合数字话音和数据传输，以及开展多种通信业务</a></SPAN></FONT></FONT></TD></TR>
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<TD width="18%" height="16"><FONT face=宋体></FONT></TD>
<TD width="82%" height="16"><FONT face=宋体><FONT size=2><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">3.8
<a href="s03.htm#3.8 安装简便，易于维护">安装简便，易于维护</a></SPAN></FONT></FONT></TD></TR>
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<TD width="82%" height="18"><B><SPAN lang=EN-US
style="COLOR: #333399"><FONT face=宋体 color=#000066
size=4>第四讲 <SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN><O:P></O:P><O:P></O:P><O:P></O:P></FONT><FONT
face=宋体 color=#000066><O:P></O:P></FONT><FONT
face=宋体><O:P></O:P></FONT><O:P><FONT
color=#0000ff><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman"><FONT
size=3><a href="s04.htm">扩频通信的工作原理及工作方式</a></FONT></SPAN></FONT></O:P></SPAN></B></TD></TR>
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<TD width="82%" height="16"><FONT face=宋体><FONT size=2>4.1
<SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">
<a href="s04.htm#4.1 工作原理">工作原理</a></SPAN></FONT></FONT></TD></TR>
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<TD width="18%" height="16"><FONT face=宋体></FONT></TD>
<TD width="82%" height="16"><FONT size=2>4.2
<a href="s04.htm#4.2 扩频通信的几种工作方式">扩频通信的<SPAN
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