发明名称 |
Fast automatic gain control (AGC) for packet based systems |
摘要 |
A method and apparatus for use in a packet based wireless communication system for reducing automatic gain control (AGC) convergence time at a receiver are described. A radio frequency (RF) signal is received. The RF signal includes a sequence of a plurality of pre-defined power levels at a beginning of a preamble of the RF signal. Statistics for each of the plurality of pre-defined power levels at the beginning of the preamble of the RF signal are computed. An appropriate gain for a variable gain amplifier (VGA) is then computed based on the computed statistics for each of the plurality of pre-defined power levels and a-priori information related to transmission power differences between the plurality of pre-defined power levels of the sequence. |
申请公布号 |
US9490764(B2) |
申请公布日期 |
2016.11.08 |
申请号 |
US201514689615 |
申请日期 |
2015.04.17 |
申请人 |
INTERDIGITAL PATENT HOLDINGS, INC. |
发明人 |
Ferrante Steven;Pietraski Philip J. |
分类号 |
H04B1/16;H03G3/30;H04B1/28;H04B1/10 |
主分类号 |
H04B1/16 |
代理机构 |
Voenig and Koenig, P.C. |
代理人 |
Voenig and Koenig, P.C. |
主权项 |
1. A method for use in a packet based wireless communication system for reducing automatic gain control (AGC) convergence time at a receiver, the method comprising:
receiving a radio frequency (RF) signal including a sequence of a plurality of pre-defined power levels at a beginning of a preamble of the RF signal; computing statistics for each of the plurality of pre-defined power levels at the beginning of the preamble of the RF signal; and computing an appropriate gain for a variable gain amplifier (VGA) based on the computed statistics for each of the plurality of pre-defined power levels and a-priori information related to transmission power differences between the plurality of pre-defined power levels of the sequence. |
地址 |
Wilmington DE US |