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<HTML><HEAD><TITLE>技术讲座</TITLE><!-- #BeginTemplate "/Templates/systechwithitem.dwt" --><!-- #BeginEditable "doctitle" --><!-- #EndEditable --><LINK
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<DIV align=center><B><IMG height=38 src="main.files/welcome4.gif"
width=76> <FONT face=楷体_GB2312 color=#ff9933
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>GSM蜂窝移动通信系统</FONT></FONT></B></TD></TR>
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<TD width="85%"><B><SPAN lang=EN-US
style="COLOR: #333399"><FONT face=宋体 color=#000066
size=4>第一讲 GSM的发展历史</FONT><FONT face=宋体
color=#000066><O:P> </O:P><O:P></O:P></FONT><FONT
face=宋体
color=#000033><O:P></O:P></FONT></SPAN></B></TD></TR>
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<TD width="85%"><SPAN lang=EN-US
style="FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt">1.1<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN><a target="_blank" href="g1-1-2.htm#b1">GSM的历史背景</a></SPAN></TD></TR>
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<TD width="85%"><SPAN lang=EN-US
style="FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt">1.2<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN><a target="_blank" href="g1-1-2.htm#b2">GSM系统技术规范</a></SPAN></TD></TR>
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<TD width="85%"><B><SPAN lang=EN-US
style="COLOR: #333399"><FONT face=宋体 color=#000066
size=4>第二讲 <SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN>GSM通信系统</FONT></SPAN></B></TD></TR>
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<TD width="85%"><SPAN lang=EN-US
style="FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt">2.1<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN><SPAN
style="FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt">
<a target="_blank" href="g2-1-2-3-4-5.HTM#b1">系统的组成</a></SPAN></TD></TR>
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<TD width="85%"><SPAN lang=EN-US
style="FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt">2.2<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN><SPAN
style="FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt">
<a target="_blank" href="g2-1-2-3-4-5.HTM#b2">交换网络子系统</a></SPAN></TD></TR>
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<TD width="85%"><SPAN lang=EN-US
style="FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt">2.3<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN><SPAN
style="FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt">
<a target="_blank" href="g2-1-2-3-4-5.HTM#b3">无线基站子系统</a><SPAN lang=EN-US><O:P>
</O:P></SPAN></SPAN></TD></TR>
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<TD width="85%"><SPAN lang=EN-US
style="FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt">2.4<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN><SPAN
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<a target="_blank" href="g2-1-2-3-4-5.HTM#b4">移动台</a></SPAN></TD></TR>
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<TD width="85%"><SPAN lang=EN-US
style="FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt">2.5<SPAN
style="FONT: 7pt 'Times New Roman'">
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<a target="_blank" href="g2-1-2-3-4-5.HTM#b5">操作维护子系统</a><SPAN lang=EN-US><O:P>
</O:P></SPAN></SPAN></TD></TR>
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<TD width="85%"><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>GSM关键技术</FONT><FONT face=宋体><O:P>
</O:P></FONT><O:P></O:P></SPAN></B></TD></TR>
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<TD width="85%"><SPAN lang=EN-US
style="FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt">3.1<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN><SPAN
style="FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt">
<a target="_blank" href="g3-1.htm">工作频段的分配</a></SPAN></TD></TR>
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<TD width="85%"><SPAN lang=EN-US
style="FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt">3.2<SPAN
style="FONT: 7pt 'Times New Roman'">
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style="FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt">
<a target="_blank" href="g3-2.htm">时分多址<SPAN
lang=EN-US>(TDMA)技术</SPAN></a></SPAN></TD></TR>
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<TD width="85%"><SPAN lang=EN-US
style="FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt">3.3<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN><SPAN
style="FONT-SIZE: 10.5pt; mso-bidi-font-size: 12.0pt">
<a target="_blank" href="g3-3.htm">时分多址帧结构</a><SPAN lang=EN-US><O:P>
</O:P></SPAN></SPAN></TD></TR>
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