Title :
Post-distortion for memoryless power amplifiers
Author :
Alina, Ziv ; Amrani, Ofer
Author_Institution :
Sch. of Electr. Eng., Tel Aviv Univ., Ramat Aviv, Israel
Abstract :
A new detection scheme for OFDM signals distorted by a memoryless nonlinear power amplifier is presented. Mitigating the power amplifier nonlinearity in the receiver is referred to as Digital Post-Distortion (DPoD). The new iterative detection scheme, termed Nonlinear Detection (NLD), does not attempt to cancel the nonlinear distortion. Rather, it employs the nonlinear components of the received signal to improve detection assuming that the nonlinear model of the power amplifier is known at the receiver side. The advantages of the proposed technique are demonstrated via simulations.
Keywords :
OFDM modulation; iterative methods; nonlinear distortion; power amplifiers; DPoD; NLD; OFDM signals; digital post-distortion; iterative detection scheme; memoryless nonlinear power amplifier; nonlinear components; nonlinear detection; nonlinear distortion; received signal; Mathematical model; Nonlinear distortion; OFDM; Polynomials; Receivers; Signal to noise ratio; digital post distortion; digital predistortion; power amplifier nonlinearity; power amplifier nonlinearity cancellation;
Conference_Titel :
Electrical & Electronics Engineers in Israel (IEEEI), 2014 IEEE 28th Convention of
Conference_Location :
Eilat
Print_ISBN :
978-1-4799-5987-7
DOI :
10.1109/EEEI.2014.7005826
