US 8,014,270 B2 · Wireless receiver for sorting packets

Abstract

A wireless receiver that sorts packets including a packet detector, multiple correlators, and multiple packet processors. Each correlator correlates a received signal according to packet type. Each packet processor processes the received signal according to packet type. A signal power detector may be provided to initially qualify the received signal as containing a packet, and the correlators determine whether a packet is present. The correlators may be configured for sequential or simultaneous correlation. For the simultaneous correlator configuration, a correlation monitor is provided to monitor correlation results to determine if the received signal contains a packet, and if so, to determine packet type. A low SNR packet detector may be provided which correlates the received signal to detect weak packet signals. The signal power detector may be omitted, where the correlators simultaneously monitor the received signal while a correlation monitor continuously monitors correlation results for packet detection.

Claims22

Dependent claims

A wireless receiver comprising:

a multi-carrier correlator that correlates a received signal according to at least one characteristic of a multi-carrier signal and according to a first predetermined communication protocol, the first predetermined communication protocol including orthogonal frequency divisional multiplexing (OFDM);
a multi-carrier packet processor that processes the received signal if the multi-carrier correlator indicates a multi-carrier packet, according to the first predetermined communication protocol;
a single-carrier correlator that correlates the received signal according to at least one characteristic of a single-carrier signal and according to a second predetermined communication protocol;
a single-carrier packet processor that processes the received signal in response to the single-carrier correlator indicating a single-carrier packet, and according to the second predetermined communication protocol;
and
a correlation monitor, coupled to the single-carrier and multi-carrier correlators, the correlation monitor configured to continuously monitor correlation results until a packet is detected.

3 more elements

Dependencies are inferred from the claim text.

Wireless receiver for sorting packets

Life of this patent

Wireless receiver for sorting packets

Life of this patent

Abstract

Claims22