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Carrier Frequency Offset Compensation for OFDMA Systems Using Circular Banded Matrices

González, Gustavo José et al · Planta Piloto de Ingeniería Química · 2013

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Author / responsible party
González, Gustavo José et al
Publisher
Planta Piloto de Ingeniería Química
Year
2013
ISSN
0327-0793
ISSN
0327-0793
Language
English

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Orthogonal frequency division multiple access (OFDMA) is a multiuser communication technique that allocates to each user a set of orthogonal carriers. In the presence of carrier frequency offset (CFO) the orthogonality among carriers is lost and it is impossible to recover the information of the users without CFO compensation. The resulting multiple access interference (MAI) can be described as an interference matrix of large dimensions. In order to compensate for the CFO, this matrix must be inverted, what is computationally complex. Therefore, a banded matrix approximation is usually introduced. In this paper we propose a circular banded matrix which is a better approximation to the actual interference matrix. Also, by means of numerical simulation, we show that neither banded nor circular banded matrices approximations work well for normalized CFO close to 0.5.<br /> Fil: González, Gustavo José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Bahía Blanca. Instituto de Investigación en Ingeniería Eléctrica; Argentina. Universidad Nacional del Sur; Argentina Fil: Gregorio, Fernando Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Bahía Blanca. Instituto de Investigación en Ingeniería Eléctrica; Argentina. Universidad Nacional del Sur; Argentina

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APA 7

González, G. J. E. A. (2013). Carrier Frequency Offset Compensation for OFDMA Systems Using Circular Banded Matrices. http://hdl.handle.net/11336/11637

MLA

González, Gustavo José et al. "Carrier Frequency Offset Compensation for OFDMA Systems Using Circular Banded Matrices." 2013. http://hdl.handle.net/11336/11637.

Chicago

González, Gustavo José et al. 2013. "Carrier Frequency Offset Compensation for OFDMA Systems Using Circular Banded Matrices.". http://hdl.handle.net/11336/11637.

Harvard

González, G. J. E. A. 2013, Carrier Frequency Offset Compensation for OFDMA Systems Using Circular Banded Matrices, Planta Piloto de Ingeniería Química, available at: http://hdl.handle.net/11336/11637 [Accessed 8 Aug. 2026].

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Title
Carrier Frequency Offset Compensation for OFDMA Systems Using Circular Banded Matrices
Author / contributors
González, Gustavo José et al
Publisher
Planta Piloto de Ingeniería Química
Publication year
2013
ISSN
0327-0793
ISSN
0327-0793
Language
English

Subjects

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Ofdma; Cfo; Compensation; Banded Matrix; https://purl.org/becyt/ford/2.2; https://purl.org/becyt/ford/2
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