US 10,958,296 B2
DIGITAL MULTI-BAND PREDISTORTION LINEARIZER WITH NON-LINEAR SUBSAMPLING ALGORITHM IN THE FEEDBACK LOOPGeneral
US 10,958,296 B2
DIGITAL MULTI-BAND PREDISTORTION LINEARIZER WITH NON-LINEAR SUBSAMPLING ALGORITHM IN THE FEEDBACK LOOP
Tech Center:
2600 Communications
Examiner:
Jaison Joseph
Art Unit:
2633 Digital and Optical Communications
Agent:
Inventors:
Fadhel M. GHANNOUCHI; Seyed Aidin BASSAM; Mohamed HELAOUI; Andrew KWAN
Assignee:
Priority:
10/14/11
Filed:
05/01/17
Granted:
03/23/21
Expiration:
10/14/31
Abstract
A concurrent multi-band linearized transmitter (CMLT) has a concurrent d a multi-band predistortion block (CDMPB) and a concurrent multi-band transmitter (CMT) connected to the CDMPB, The CDMPB can have a plurality of digital baseband signal predistorter blocks (DBSPBs), an analyzing and modeling (A&M) stage, and a signal observation feedback loop. Each DBSPB can have a plurality of inputs, each corresponding to a single frequency band of the multi-band input signal, and its output corresponding to a single frequency band; each output connect corresponding to an input of the CMLT. The A&M stage can have a plurality of outputs connected to and updating the parameters of the DBSPBs, and a plurality of inputs connected to either both outputs of the signal observation loop or the output of the subsampling loop and to outputs of the DBSPBs. The A&M stage can perform signals' time alignment, reconstruction of signals and compute parameters of DBSPBs.
Cooperative Patent Classification (CPC)
H03H03F2200/408H03FH04B2001/0425H04L2025/03356H04B