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http://dx.doi.org/10.7840/kics.2012.37C.12.1289

Digital Predistortion Technique for MIMO Transmitters  

Jeong, Eui-Rim (한밭대학교 정보통신공학과 통신신호처리 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.37C, no.12, 2012 , pp. 1289-1295 More about this Journal
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.
Keywords
Predistortion; MIMO; Polynomial; Power amplifier; nonlinear processing;
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