US 12,256,346 B2
Envelope tracking for wideband signals using filter bank processing
Yaron Laufer, Brookline, MA (US); Gideon Shlomo Kutz, Ramat Hasharon (IL); Assaf Touboul, Netanya (IL); Tal Oved, Modiin (IL); and Elad Meir, Ramat Gan (IL)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Dec. 7, 2023, as Appl. No. 18/532,277.
Application 18/532,277 is a continuation of application No. 17/453,800, filed on Nov. 5, 2021, granted, now 12,069,594.
Prior Publication US 2024/0155518 A1, May 9, 2024
Int. Cl. H04W 52/52 (2009.01); H04W 24/08 (2009.01)
CPC H04W 52/52 (2013.01) [H04W 24/08 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A method for wireless communication by a receiver device, comprising:
receiving, from a transmitter device, an indication of a characteristic of an amplification system used to amplify an input signal for transmission of a transmission signal to the receiver device,
wherein the amplification system implements envelope tracking using a combination of envelopes extracted for respective subbands of the input signal; and
receiving the transmission signal based on the indication of the characteristic,
wherein the method further comprises:
(i) receiving an indication of a capability, of the transmitter device, to support the envelope tracking by combining the envelopes associated with subbands, and transmitting an indication to perform the envelope tracking by combining the envelopes based on the capability; or
(ii) receiving, from the transmitter device, an indication of subbands that are supported and a supported bandwidth for the input signal, and transmitting, to the transmitter device, a configuration associated with the transmission signal based on the indication of the subbands that are supported and the supported bandwidth for the input signal; or
(iii) receiving signaling to activate or deactivate, at the receiver device, distortion reduction operations associated with the envelope tracking; or
(iv) receiving information associated with frequency division multiplexing of multiple receiver devices, wherein the transmission signal includes frequency division multiplexed signals to the multiple receiver devices, and wherein receiving the transmission signal includes reducing distortion associated with the envelope tracking based on the information; or
(v) transmitting an indication of a combination function to use for performing the combination of the envelopes.