Linearization of intermodulation bands for concurrent dual-band power amplifiers

A dual-band, frequency-band technology, applied in the field of linearization of intermodulation frequency bands for concurrent dual-band power amplifiers, can solve problems such as impossibility and high cost
CN105229927AActive Publication Date: 2016-01-06TELEFON AB LM ERICSSON (PUBL)
6 Cites 8 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TELEFON AB LM ERICSSON (PUBL)
Publication Date
2016-01-06

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

Systems and methods are disclosed for digital predistortion for a concurrent multi-band transmitter that compensates for both in-band and out-of- band intermodulation products according to a memory polynomial based baseband model. In one embodiment, a concurrent multi-band transmitter includes a digital predistortion subsystem, power amplifier circuitry, and an adaptation subsystem. The digital predistortion subsystem includes multiple digital predistorters configured to process digital input signals for frequency bands of a concurrent multi-band signal to provide predistorted digital input signals each being for a different one of the frequency bands of the concurrent multi-band signal and one or more intermodulation distortion compensation signals each being for a different one of one or more intermodulation distortion frequency bands. The adaptation subsystem is configured to adaptively configure the plurality of digital predistorters according to a memory polynomial based digital baseband model of the digital predistorters.
Need to check novelty before this filing date? Find Prior Art

Description

[0001] related application

[0002] This application is a continuation of U.S. Patent Application Serial No. 13 / 969858, filed August 19, 2013, entitled "Low Complexity Digital Predistortion for Concurrent Dual-Band Transmitters," claiming 2013 Priority to US Provisional Application Serial No. 61 / 826060, filed May 22, the disclosures of which are hereby incorporated by reference in their entirety. technical field

[0003] This disclosure relates to digital predistortion for concurrent multiband transmitters. Background technique

[0004] In many modern applications, it is desirable to have a concurrent multiband transmitter capable of transmitting concurrent multiband signals. As used herein, a concurrent multi-band signal is a signal that occupies multiple different frequency bands. More specifically, a concurrent multi-band signal contains frequency components that occupy different contiguous bandwidths for each of the multiple frequency bands. A concurrent multiband sig...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More