National;
Key;
Laboratory;
of;
ISN,;
Information;
Science;
Institute,;
Xidian;
University,;
Xi'an;
710071,;
China;
Depatment;
of;
Computing;
&;
Information;
System,;
University;
of;
Luton,;
LU13JU,;
UK;
移动通信网络; CDMA; 码分多址; 多路访问协议; 功率控制;