Grouping methods for orthogonal frequency- and space-division multiple access in a radio-on-fiber radio-space transmission system

Luong H. Hai; Takeshi Higashino; Katsutoshi Tsukamoto; Shozo Komaki

doi:10.1117/1.2777166

1 September 2007 Grouping methods for orthogonal frequency- and space-division multiple access in a radio-on-fiber radio-space transmission system

Luong H. Hai, Takeshi Higashino, Katsutoshi Tsukamoto, Shozo Komaki

Author Affiliations +

Optical Engineering, Vol. 46, Issue 9, 095006 (September 2007). https://doi.org/10.1117/1.2777166

Abstract

This paper proposes a radio-on-fiber (RoF) radio-space transmission system. We consider the orthogonal frequency- and space-division multiple access system, in which the orthogonal frequency-division multiple access (OFDMA) and space-division multiple access (SDMA) are combined. In this system, two frequency-channel scheduling schemes are also proposed for OFDMA, and two grouping methods are proposed for SDMA. The performance of the proposed systems is analyzed by computational simulations. It is shown that the random grouping method does not degrade the performance compared with a more complicated grouping method. In the proposed frequency-channel scheduling schemes, the control station estimates all users' signal-to-noise ratios (SNRs), and these schemes allow the system to assign subcarriers to different users according to their channel conditions so that each user can transmit on subcarriers where it has high SNR. Simulation results show that users can avoid frequency-selective fading and achieve higher bit-error-rate performance.

©(2007) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Luong H. Hai, Takeshi Higashino, Katsutoshi Tsukamoto, and Shozo Komaki "Grouping methods for orthogonal frequency- and space-division multiple access in a radio-on-fiber radio-space transmission system," Optical Engineering 46(9), 095006 (1 September 2007). https://doi.org/10.1117/1.2777166

Published: 1 September 2007

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