发明名称 |
Self-correlation detection in automatic gain calibration |
摘要 |
An embodiment of the present invention provides an automatic gain control system for a wireless receiver that quickly differentiates desired in-band signals from high power out-of-band signals that overlap into the target band. The system measures power before and after passing a received signal through a pair of finite impulse response filters that largely restrict the signal's power to that which is in-band. By comparing the in-band energy of the received signal after filtering to the total signal energy prior to filtering, it is possible to determine whether a new in-band signal has arrived. The presence of this new in-band signal is then verified by a multi-threshold comparison of the normalized self-correlation to verify the presence of a new, desired in-band signal.
|
申请公布号 |
US2002183027(A1) |
申请公布日期 |
2002.12.05 |
申请号 |
US20010849595 |
申请日期 |
2001.05.04 |
申请人 |
HUSTED PAUL;THON LARS E.;MCFARLAND WILLIAM;SAMUEL NG TAO FEI |
发明人 |
HUSTED PAUL;THON LARS E.;MCFARLAND WILLIAM;SAMUEL NG TAO FEI |
分类号 |
H03G5/16;H04B1/10;(IPC1-7):H04B7/00 |
主分类号 |
H03G5/16 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|