Digital compensation of second - and third - order nonlinear distortions generated by blocker signals
Digital compensation of second - and third - order nonlinear distortions generated by blocker signals
Date
2016
Authors
Gerardo Abel Laguna-Sanchez, 0000-0001-5145-1248
Alfonso Prieto-Guerrero, 0000-0002-2661-2449
Journal Title
Journal ISSN
Volume Title
Publisher
Wiley
Institut of Electrical Engineers of Japan
Institut of Electrical Engineers of Japan
Abstract
Description
Deeply integrated systems in chips commonly include a digital and an analog front end on the same die. These analog front‐end schemes for wireless communications could be implemented under the concept called software‐defined radio (SDR). Digital signal processing is commonly used to perform signal filtering and channel equalization, and, recently, to improve front‐end radio performance by removing the undesirable effects of the analog front‐end imperfections. These wide‐band SDR are currently implemented without the surface acoustic wave (SAW) filter, because it is difficult to integrate a highly configurable one, as is required in wide‐band systems. An analog front end without this filter has no efficient protection against blocker signal effects, specifically against nonlinear distortions due to the analog front‐end imperfections. This paper proposes an algorithm to simultaneously remove second‐ and third‐order nonlinear distortions caused by a blocker signal, departing from a behavioral model and a band‐pass sampling pure digital algorithm to recover the blocker signal information.
Keywords
INGENIERÍA Y TECNOLOGÍA