| US 7,586,884 B2 | ||
| Joint packet detection in wireless communication system with one or more receiver | ||
| Geert Arnout Awater, Utrecht (Netherlands); James Gardner, San Ramon, Calif. (US); Richard van Nee, De Meern (Netherlands); and Gregory C. Steele, Fremont, Calif. (US) | ||
| Assigned to Qualcomm Incorporated, San Diego, Calif. (US) | ||
| Filed on Aug. 15, 2003, as Appl. No. 10/642,070. | ||
| Prior Publication US 2005/0152317 A1, Jul. 14, 2005 | ||
| Int. Cl. H04W 4/00 (2006.01) | ||
| U.S. Cl. 370—338 [375/147] | 12 Claims |
| 1. A packet detector for detecting packets in a channel in either of an 802.11a or an 802.11b format, the packet detector
comprising:
inputs from each of at least one antenna, wherein each antenna is expected to receive a different signal from the channel;
a first analysis circuit for analyzing signals from the inputs to determine if an 802.11b packet detection criteria is met;
a second analysis circuit for analyzing signals from the inputs to determine if an 802.11a packet detection criteria is met
when the 802.11b packet detection criteria is not met wherein the inputs are sampled at a common rate for sampled signal data
provided to the first analysis circuit and the second analysis circuit; and
a detector output, for outputting a signal indicative of a packet detection.
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