Compensation of undesired effects in MIMO wireless transceivers

Author

Cabarkapa, M. ; Bozic, M. ; Budimir, D. ; Neskovic, N. ; Neskovic, A.

Author_Institution

Wireless Commun. Res. Group, Univ. of Westminster, London, UK

fYear

2012

fDate

8-14 July 2012

Firstpage

1

Lastpage

2

Abstract

This paper presents compensation of all undesired effects (Power Amplifier (PA) nonlinearity, transmitter and receiver antenna crosstalk, before-PA nonlinear crosstalk, Multiple Input Multiple Output (MIMO) channel fading and crosstalk) in MIMO Orthogonal Frequency Division Multiplex (OFDM) wireless systems. It has been demonstrated that reduced-complexity Crossover Digital Predistortion (CO-DPD) algorithm on transmitter side and Matrix Inversion algorithm on receiver side can suppress almost all undesired effects introduced by transmitter, channel and receiver in 4×4 MIMO OFDM System that can be used in modern wireless system applications. A significant complexity reduction is achieved due to the fact that Digital Signal Processing (DSP) during CO-DPD process on transmitter side is done with real instead of complex numbers.

Keywords

MIMO communication; OFDM modulation; antenna arrays; compensation; crosstalk; fading channels; interference suppression; matrix inversion; power amplifiers; radio transceivers; radiofrequency amplifiers; receiving antennas; signal processing; transmitting antennas; CO-DPD algorithm; DSP; MIMO OFDM system; MIMO orthogonal frequency division multiplex wireless system; MIMO wireless transceivers; PA nonlinearity; before-PA nonlinear crosstalk; digital signal processing; matrix inversion algorithm; multiple input multiple output channel fading; power amplifier nonlinearity; receiver antenna crosstalk; reduced-complexity crossover digital predistortion algorithm; transmitter antenna crosstalk; undesired effect compensation; Crosstalk; MIMO; Mathematical model; Receivers; Signal processing algorithms; Transmitters; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE

Conference_Location

Chicago, IL

ISSN

1522-3965

Print_ISBN

978-1-4673-0461-0

Type

conf

DOI

10.1109/APS.2012.6348077

Filename

6348077