Predistortion study of radio over fibre link

Atso Hekkala, Jari Perttu, Mika Lasanen, Luis Vieira, Nathan Gomes

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

4 Citations (Scopus)

Abstract

The concept of virtual MIMO (multiple-input multiple output) has been proposed to tackle the challenges arising from high data rate wireless communications. Connecting a central unit (CU) with remote antenna units (RAUs), Radio over Fibre (RoF) links are an essential part of the virtual MIMO systems. This paper considers the adaptive compensation of the nonlinear distortions introduced by a RoF link and power amplifier (PA) connected in series. For the predistorter, we study the effects of the fixed point calculation to the performance. Our simulation results indicate that a fixed point predistorter with reasonably low word lengths gives almost the same performance as a floating point predistorter. Hence, it is possible to implement a feasible, low cost and energy consumption, fixed point predistorter into a field-programmable gate array (FPGA).
Original languageEnglish
Title of host publication2010 Future Network & Mobile Summit
PublisherInstitute of Electrical and Electronic Engineers IEEE
Number of pages8
ISBN (Electronic)978-1-905824-16-8
ISBN (Print)978-1-905824-18-2
Publication statusPublished - 2010
MoE publication typeNot Eligible
Event2010 Future Network and Mobile Summit - Florence, Italy
Duration: 16 Jun 201018 Jun 2010

Conference

Conference2010 Future Network and Mobile Summit
CountryItaly
CityFlorence
Period16/06/1018/06/10

Fingerprint

Radio-over-fiber
Nonlinear distortion
Power amplifiers
Field programmable gate arrays (FPGA)
Energy utilization
Antennas
Communication
Costs
Compensation and Redress

Keywords

  • fixed point implementation
  • predistortion
  • radio over fibre, virtual MIMO

Cite this

Hekkala, A., Perttu, J., Lasanen, M., Vieira, L., & Gomes, N. (2010). Predistortion study of radio over fibre link. In 2010 Future Network & Mobile Summit Institute of Electrical and Electronic Engineers IEEE.
Hekkala, Atso ; Perttu, Jari ; Lasanen, Mika ; Vieira, Luis ; Gomes, Nathan. / Predistortion study of radio over fibre link. 2010 Future Network & Mobile Summit. Institute of Electrical and Electronic Engineers IEEE, 2010.
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Hekkala, A, Perttu, J, Lasanen, M, Vieira, L & Gomes, N 2010, Predistortion study of radio over fibre link. in 2010 Future Network & Mobile Summit. Institute of Electrical and Electronic Engineers IEEE, 2010 Future Network and Mobile Summit, Florence, Italy, 16/06/10.

Predistortion study of radio over fibre link. / Hekkala, Atso; Perttu, Jari; Lasanen, Mika; Vieira, Luis; Gomes, Nathan.

2010 Future Network & Mobile Summit. Institute of Electrical and Electronic Engineers IEEE, 2010.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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T1 - Predistortion study of radio over fibre link

AU - Hekkala, Atso

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AU - Vieira, Luis

AU - Gomes, Nathan

N1 - Project code: 19083

PY - 2010

Y1 - 2010

N2 - The concept of virtual MIMO (multiple-input multiple output) has been proposed to tackle the challenges arising from high data rate wireless communications. Connecting a central unit (CU) with remote antenna units (RAUs), Radio over Fibre (RoF) links are an essential part of the virtual MIMO systems. This paper considers the adaptive compensation of the nonlinear distortions introduced by a RoF link and power amplifier (PA) connected in series. For the predistorter, we study the effects of the fixed point calculation to the performance. Our simulation results indicate that a fixed point predistorter with reasonably low word lengths gives almost the same performance as a floating point predistorter. Hence, it is possible to implement a feasible, low cost and energy consumption, fixed point predistorter into a field-programmable gate array (FPGA).

AB - The concept of virtual MIMO (multiple-input multiple output) has been proposed to tackle the challenges arising from high data rate wireless communications. Connecting a central unit (CU) with remote antenna units (RAUs), Radio over Fibre (RoF) links are an essential part of the virtual MIMO systems. This paper considers the adaptive compensation of the nonlinear distortions introduced by a RoF link and power amplifier (PA) connected in series. For the predistorter, we study the effects of the fixed point calculation to the performance. Our simulation results indicate that a fixed point predistorter with reasonably low word lengths gives almost the same performance as a floating point predistorter. Hence, it is possible to implement a feasible, low cost and energy consumption, fixed point predistorter into a field-programmable gate array (FPGA).

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KW - predistortion

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M3 - Conference article in proceedings

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BT - 2010 Future Network & Mobile Summit

PB - Institute of Electrical and Electronic Engineers IEEE

ER -

Hekkala A, Perttu J, Lasanen M, Vieira L, Gomes N. Predistortion study of radio over fibre link. In 2010 Future Network & Mobile Summit. Institute of Electrical and Electronic Engineers IEEE. 2010