US 10,892,788 B2
Low complexity MIMO digital pre-distortion
Haiying Cao, Beijing (CN); Spendim Dalipi, Sollentuna (SE); and Per Landin, Kumla (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 16/603,529
Filed by TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
PCT Filed Apr. 7, 2017, PCT No. PCT/IB2017/052037
§ 371(c)(1), (2) Date Oct. 7, 2019,
PCT Pub. No. WO2018/185532, PCT Pub. Date Oct. 11, 2018.
Prior Publication US 2020/0059256 A1, Feb. 20, 2020
Int. Cl. H04B 1/04 (2006.01); H03F 1/32 (2006.01); H03F 3/24 (2006.01); H04B 7/0417 (2017.01); H04B 7/0456 (2017.01); H04B 7/06 (2006.01); H04L 25/03 (2006.01); H04L 27/36 (2006.01); H04M 3/34 (2006.01)
CPC H04B 1/0475 (2013.01) [H03F 1/3247 (2013.01); H03F 3/245 (2013.01); H04B 7/0417 (2013.01); H04B 7/0456 (2013.01); H04B 7/0632 (2013.01); H04L 25/03343 (2013.01); H04L 25/03891 (2013.01); H04L 27/368 (2013.01); H04M 3/34 (2013.01); H04B 2001/0425 (2013.01); H04L 2025/03426 (2013.01)] 20 Claims
OG exemplary drawing
 
9. A transmitter arrangement for cancelling crosstalk and correcting power amplifier (PA) distortion for a transmitter branch of a multiple-input multiple-output (MIMO) configuration having multiple branches, comprising:
an interface for receiving an original baseband signal of a first MIMO branch;
processing circuitry configured to combine the original baseband input signal of the first MIMO branch with a crosstalk output signal generated from two or more signals associated with two or more respective MIMO branches to produce a combined signal, wherein the two or more signals are used as input to, and processed by, a crosstalk model;
digitally pre-distorting the combined signal; and
the processing circuitry further configured to process the combined signal to generate an output signal in order to minimize error of the original baseband input signal caused by the crosstalk and/or PA distortion.