Qualcomm Incorporated

Shubham Ahuja

Alexander Dorosenco

Tao Luo

Igor Gutman

Nicholas Michael Carbone

Aidin Bassam

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a transmitter device may transmit, to each receiver device of a plurality of receiver devices communicating with the transmitter device over a wideband channel using frequency division multiplexing, an indication of a bandwidth portion of the wideband channel to be used by the receiver device for performing measurements associated with a non-linear model of the transmitter device. The transmitter device may transmit, to each receiver device of the plurality of receiver devices, one or more wideband reference signals associated with training the non-linear model. The transmitter device may receive a plurality of digital pre-distortion (DPD) coefficients, obtain a set of DPD coefficients based at least in part on combining the plurality of DPD coefficients, and perform DPD processing in accordance with the set of DPD coefficients. Numerous other aspects are described.

Digital pre-distortion signaling

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a transceiver chain may receive, using a downconverter tuned by at least one local oscillator, transmit signals that are modulated using a modulation bandwidth and that span a total bandwidth greater than or equal to the modulation bandwidth. The at least one local oscillator may cover a first fraction of the total bandwidth. The transceiver chain may receive, using at least one analog-to-digital converter, input from the downconverter, and may output a first digital signal based at least in part on the input and sampling at the first fraction of the total bandwidth. The transceiver chain may determine an error associated with the transmit signals based at least in part on the first digital signal, and may perform digital pre-distortion on new signals based at least in part on the error. Numerous other aspects are described.

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San Diego, CA, United States of America

Shubham Ahuja