Linearity and Efficiency Strategies for Next‐Generation Wireless Communications

Hueber, Gernot; Staszewski, Robert Bogdan

doi:10.1002/9780470634455.ch12

Search citation statements

Order By: Relevance

Paper Sections

Select...

Introduction1

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2015

Publication Types

Select...

Article1

Relationship

Self Cite0

Independent1

Authors

Journals

Cited by 1 publication

(1 citation statement)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a result, nonlinear devices in the system (mainly power amplifiers) can cause several nonlinear effects such as in-band and out-of-band spectral re-growth, which results in degradation signal-tonoise ratio (SNR) in the main and adjacent channels. To alleviate these problems, highly linear power amplifiers (PAs) must be used [4,5].…”

Section: Introductionmentioning

confidence: 99%

Performance of feed‐forward linearizers of power amplifiers in OFDM systems under complex gain errors

Gharaibeh

Al-Zayed

2015

Int J Communication

View full text Add to dashboard Cite

Adaptive feed-forward (FF) linearization schemes of power amplifiers provide high distortion cancelation and adjacent channel power ratio (ACPR) reduction. However, FF schemes are very sensitive to imbalances in the circuit parameters used to achieve signal cancelation. In this paper, an FF linearization circuit is analyzed using the orthogonalization of the nonlinear model and considering the effects of complex gain errors in the signal and distortion cancelation loops on the overall performance of the FF linearizer. The analysis enables the effective signal-to-distortion ratio (SDR) and ACPR to be estimated from FF circuit model. It is shown that complex gain errors in the distortion cancelation loop have a more significant effect on in-band distortion than out-of-band distortion, which means that the design of FF linearizers based on ACPR improvement is not optimal.

show abstract

Section: Introductionmentioning

confidence: 99%