Towards dynamic spectrum access in primary OFDMA systems

Author

Grønsund, Pål ; Pham, Hai Ngoc ; Engelstad, Paal E.

Author_Institution

Telenor R&I, Oslo, Norway

fYear

2009

fDate

13-16 Sept. 2009

Firstpage

848

Lastpage

852

Abstract

OFDMA will be the major transmission technology in the future mobile wireless broadband systems, and is already used in Mobile WiMAX and LTE. In this paper, we use simulations to characterize the spectrum usage of such primary systems. This knowledge is useful for cognitive radio and other technologies for dynamic spectrum access that aim at improving the overall spectrum usage. We calculate the available capacity and analyze the distribution of the spectrum occupancy over time for various network scenarios and traffic models. Based on our analyses, we finally propose directions for improving the dynamic access of spectrum allocated to primary OFDMA systems.

Keywords

OFDM modulation; frequency division multiple access; telecommunication traffic; OFDMA system; cognitive radio; dynamic spectrum access; mobile wireless broadband system; network traffic model; transmission technology; Base stations; Bit rate; Informatics; Laboratories; OFDM; Radio spectrum management; Statistics; Telecommunication traffic; Traffic control; WiMAX;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2009 IEEE 20th International Symposium on

Conference_Location

Tokyo

Print_ISBN

978-1-4244-5122-7

Electronic_ISBN

978-1-4244-5123-4

Type

conf

DOI

10.1109/PIMRC.2009.5450079

Filename

5450079