IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
LETTER
A low cost adaptive digital predistorter for linearization of power amplifiers in MIMO transmitters
Eui-Rim JeongSungho Choi
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2012 Volume 9 Issue 6 Pages 580-585

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Abstract

An adaptive digital predistortion (PD) technique is proposed for linearization of power amplifiers (PAs) in multiple-input multiple-output (MIMO) transmitters. We consider a PD structure equipped with only one combined feedback path while conventional systems have multiple feedback paths. Hence, the proposed structure is much simpler than that of multiple feedback paths. Based on the structure, a new PD algorithm is derived. The simulation results show that linearization performance of the proposed method is almost the same as the conventional multiple feedback technique while the former is much simpler to implement than the latter.

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© 2012 by The Institute of Electronics, Information and Communication Engineers
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