Low-complexity sampling point selection in OFDM receiver with fractional sampling

Eisuke Sakai; Haruki Nishimura; Mamiko Inamori; Yukitosi Sanada; Mohammad Ghavami

doi:10.1109/ISITA.2010.5649681

Low-complexity sampling point selection in OFDM receiver with fractional sampling

Eisuke Sakai, Haruki Nishimura, Mamiko Inamori, Yukitosi Sanada, Mohammad Ghavami

Department of Electronics and Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

To achieve diversity with a single antenna, a fractional sampling (FS) scheme in OFDM has been investigated. In addition, to obtain more diversity gain through FS, a sampling point selection (SPS) scheme has been proposed. However, it requires a large number of multiplication operations for the SPS. This leads to large power consumption and costs for additional circuits. In this paper, a low-complexity SPS scheme is proposed. There is the trade-off between the diversity gain and the estimation accuracy. The serial process of the channel estimation requires only a DFT block with the size of N/4 as the additional circuit.

Original language	English
Title of host publication	ISITA/ISSSTA 2010 - 2010 International Symposium on Information Theory and Its Applications
Pages	662-667
Number of pages	6
DOIs	https://doi.org/10.1109/ISITA.2010.5649681
Publication status	Published - 2010
Event	2010 20th International Symposium on Information Theory and Its Applications, ISITA 2010 and the 2010 20th International Symposium on Spread Spectrum Techniques and Applications, ISSSTA 2010 - Taichung, Taiwan, Province of China Duration: 2010 Oct 17 → 2010 Oct 20

Publication series

Name	ISITA/ISSSTA 2010 - 2010 International Symposium on Information Theory and Its Applications

Other

Other	2010 20th International Symposium on Information Theory and Its Applications, ISITA 2010 and the 2010 20th International Symposium on Spread Spectrum Techniques and Applications, ISSSTA 2010
Country/Territory	Taiwan, Province of China
City	Taichung
Period	10/10/17 → 10/10/20

ASJC Scopus subject areas

Computational Theory and Mathematics
Information Systems

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10.1109/ISITA.2010.5649681

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Sakai, E., Nishimura, H., Inamori, M., Sanada, Y., & Ghavami, M. (2010). Low-complexity sampling point selection in OFDM receiver with fractional sampling. In ISITA/ISSSTA 2010 - 2010 International Symposium on Information Theory and Its Applications (pp. 662-667). Article 5649681 (ISITA/ISSSTA 2010 - 2010 International Symposium on Information Theory and Its Applications). https://doi.org/10.1109/ISITA.2010.5649681

Low-complexity sampling point selection in OFDM receiver with fractional sampling. / Sakai, Eisuke; Nishimura, Haruki; Inamori, Mamiko et al.
ISITA/ISSSTA 2010 - 2010 International Symposium on Information Theory and Its Applications. 2010. p. 662-667 5649681 (ISITA/ISSSTA 2010 - 2010 International Symposium on Information Theory and Its Applications).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Sakai, E, Nishimura, H, Inamori, M, Sanada, Y & Ghavami, M 2010, Low-complexity sampling point selection in OFDM receiver with fractional sampling. in ISITA/ISSSTA 2010 - 2010 International Symposium on Information Theory and Its Applications., 5649681, ISITA/ISSSTA 2010 - 2010 International Symposium on Information Theory and Its Applications, pp. 662-667, 2010 20th International Symposium on Information Theory and Its Applications, ISITA 2010 and the 2010 20th International Symposium on Spread Spectrum Techniques and Applications, ISSSTA 2010, Taichung, Taiwan, Province of China, 10/10/17. https://doi.org/10.1109/ISITA.2010.5649681

Sakai E, Nishimura H, Inamori M, Sanada Y, Ghavami M. Low-complexity sampling point selection in OFDM receiver with fractional sampling. In ISITA/ISSSTA 2010 - 2010 International Symposium on Information Theory and Its Applications. 2010. p. 662-667. 5649681. (ISITA/ISSSTA 2010 - 2010 International Symposium on Information Theory and Its Applications). doi: 10.1109/ISITA.2010.5649681

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AB - To achieve diversity with a single antenna, a fractional sampling (FS) scheme in OFDM has been investigated. In addition, to obtain more diversity gain through FS, a sampling point selection (SPS) scheme has been proposed. However, it requires a large number of multiplication operations for the SPS. This leads to large power consumption and costs for additional circuits. In this paper, a low-complexity SPS scheme is proposed. There is the trade-off between the diversity gain and the estimation accuracy. The serial process of the channel estimation requires only a DFT block with the size of N/4 as the additional circuit.

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Low-complexity sampling point selection in OFDM receiver with fractional sampling

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