Intra-packet antenna diversity systems and methods

摘要

A first amplifier is configured to provide a first variable gain. A selecting module is configured to (i) connect a first antenna to the first amplifier when a selection signal is in a first state, and (ii) connect a second antenna to the first amplifier when the selection signal is in a second state. A second amplifier is in communication with an output of the first amplifier and is configured to provide a second variable gain. An automatic gain control (AGC) module is configured to control each of the first and second variable gains. An antenna selection module is configured to selectively change the selection signal in response to the first variable gain or the second variable gain after a preamble of a data packet and before a payload of the data packet.

主权项

1. A device for wirelessly receiving a data packet, the device comprising:
a first amplifier configured to provide a first variable gain; a selecting module configured to
(i) connect a first antenna to the first amplifier when a selection signal is in a first state, and(ii) connect a second antenna to the first amplifier when the selection signal is in a second state; a second amplifier in communication with an output of the first amplifier, wherein the second amplifier is configured to provide a second variable gain; an automatic gain control (AGC) module configured to control each of the first variable gain and the second variable gain; and an antenna selection module configured to selectively change the selection signal in response to the first variable gain or the second variable gain after a preamble of the data packet and before a payload of the data packet, and, when the selection signal is set to the first state, to maintain the selection signal in the first state in response to determinations that: the first variable gain is less than a first predetermined gain value; and the second variable gain is less than a second predetermined gain value.