发明名称 |
Preamble detector, for multi-mode receiver, has detecting unit to generate output signal, which indicates type of detected preambles, where detector activates base band functions upon detection of signals containing preambles |
摘要 |
<p>Preamble detector has an RSSI block (12) measures the in-band transmitting power of the compensated I/Q signals when the power is above a default threshold. A detecting unit (10) generates an output signal, which indicates the type of the 802.11 a/b/g preambles detected within digitized n-Bit I/Q current signals when the power is above the threshold. Base band functions are activated upon detection of the signals containing the preambles. The preamble detecting unit, an evaluation block, and a power measuring unit are operated in parallel by a common clock signal, where the evaluation block includes a finite state machine for generation of an activation signal for the base band portion of the receiver. An independent claim is also included for a method for detecting a preamble based on 802.11 a/b/gwireless standards.</p> |
申请公布号 |
DE102005006443(A1) |
申请公布日期 |
2006.08.24 |
申请号 |
DE20051006443 |
申请日期 |
2005.02.12 |
申请人 |
NEWLOGIC TECHNOLOGIES AG |
发明人 |
CHIODINI, ALAIN;BENOIST, FREDERIC |
分类号 |
H04L25/02;H04L7/04;H04L7/08;H04L25/40 |
主分类号 |
H04L25/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|