Smart signal routing of ieee 802.11 dsss and ofdm signals
OwnerStephen R. CARSELLO, Conrad C. SMITH +1inventors
InventorsStephen R. CARSELLO, Conrad C. SMITH, Nikolaos GLANTZIS
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Abstract
A method is disclosed for a wideband Wi-Fi network analyzer that detects the presence of packets corresponding to a desired waveform type, and routing detected signals to a bank of demodulator resources, i.e., channel processors, based on availability and need. Furthermore, to mitigate the case of Wi-Fi 802.11b where the DSSS preamble is subject to false detection on neighboring channels, a neighbor channel filter, NCF, is also disclosed.
Claims20
A method for detection of wireless communication network packets corresponding to a desired waveform type across a wideband, the method comprising:
- receiving a wideband signal;
- sampling the wideband signal at a wideband signal sample rate;
- filtering the wideband signal to produce N channel signals in N channels, N being an integer greater than 1, the N channel signals being sampled at a rate less than the wideband signal sample rate;
- routing the N channel signals to L channel processors, L being an integer less than N;
- demodulating each routed channel signal in a channel processor of the L channel processors to derive a plurality of demodulated packets;
- and
- collecting the demodulated packets in a packet collector.
A communication network traffic analyzer for detection of wireless communication network packets corresponding to a desired waveform type across a wideband, the analyzer comprising:
- a receiver configured to:
- receive a wideband signal;
- sample the wideband signal at a wideband signal sample rate;
- a filter bank configured to filter the wideband signal to produce N channel signals in N channels, N being an integer greater than 1, the N channel signals being sampled at a rate less than the wideband signal sample rate;
- a router configured to route the N channel signals to L channel processors, L being an integer less than N;
- L channel processors configured to demodulate each routed channel signal to derive a plurality of demodulated packets;
- and
- a collector configured to collect the demodulated packets in a packet collector.
Dependencies are inferred from the claim text.