US 2026/0106659 A1 · SPATIAL DIVERSITY FOR LOW-POWER WAKE-UP SIGNALS

Abstract

Methods, systems, and devices for wireless communication are described. A transmitter may modulate a set of bits into a modulated sample sequence for transmission to a receiver. In some aspects, the transmitter may apply phase-cycling patterns to subsequences of the modulated sample sequence to generate phase-cycling modulated sample sequences and corresponding low-power signals. The transmitter may transmit the signals via respective antennas, which the receiver may receive at different times. Alternatively, the transmitter may generate the signals according to a transmission staggering pattern such that the signals are transmitted via different antennas at non-overlapping times or frequencies. The receiver may use envelop detection to detect the signals.

Claims23

Dependent claims

An apparatus for wireless communication at a transmitter, comprising:

a processor;
memory coupled with the processor;
and
instructions stored in the memory and executable by the processor to cause the apparatus to:
modulate one or more bits into a modulated sample sequence for wireless transmission to a receiver;
apply a first phase-cycling pattern to a plurality of subsequences of the modulated sample sequence to generate a first phase-cycling modulated sample sequence for transmission via a first transmit antenna;
apply a second phase-cycling pattern to the plurality of subsequences of the modulated sample sequence to generate a second phase-cycling modulated sample sequence for transmission via a second transmit antenna;
transmit a first signal via the first transmit antenna based at least in part on the first phase-cycling modulated sample sequence;
and
transmit a second signal via the second transmit antenna based at least in part on the second phase-cycling modulated sample sequence.

7 more elements

An apparatus for wireless communication at a transmitter, comprising:

a processor;
memory coupled with the processor;
and
instructions stored in the memory and executable by the processor to cause the apparatus to:
modulate one or more bits into a modulated sample sequence for wireless transmission to a receiver;
generating, in accordance with a transmission staggering pattern, a first signal from the modulated sample sequence for transmission via a first transmit antenna and a second signal from the modulated sample sequence for transmission via a second transmit antenna;
and
transmit the first signal via the first transmit antenna and the second signal via the second transmit antenna, wherein the first signal and the second signal are respectively transmitted via the first transmit antenna and the second transmit antenna at non-overlapping times or via non-overlapping frequencies in accordance with the transmission staggering pattern.

5 more elements

Dependencies are inferred from the claim text.

Spatial diversity for low-power wake-up signals

Life of this patent

Spatial diversity for low-power wake-up signals

Life of this patent

Abstract

Claims23