MMSE beamforming for SC-FDMA transmission over MIMO ISI channels
Dang UL, Ruder M, Schober R, Gerstacker W (2011)
Publication Type: Journal article
Publication year: 2011
Journal
Book Volume: 2011
Article Number: 614571
DOI: 10.1155/2011/614571
Abstract
We consider transmit beamforming for single-carrier frequency-division multiple access (SC-FDMA) transmission over frequency-selective multiple-input multiple-output (MIMO) channels. The beamforming filters are optimized for minimization of the sum of the mean-squared errors (MSEs) of the transmitted data streams after MIMO minimum mean-squared error linear equalization (MMSE-LE), and for minimization of the product of the MSEs after MIMO MMSE decision-feedback equalization (MMSE-DFE), respectively. We prove that for SC-FDMA transmission in both cases eigenbeamforming, diagonalizing the overall channel, together with a nonuniform power distribution is the optimum beamforming strategy. The optimum power allocation derived for MMSE-LE is similar in spirit to classical results for the optimum continuous-time transmit filter for linear modulation formats obtained by Berger/Tufts and Yang/Roy, whereas for MMSE-DFE the capacity achieving waterfilling strategy well known from conventional single-carrier transmission schemes is obtained. Moreover, we present a modification of the beamformer design to mitigate an increase of the peak-to-average power ratio (PAPR) which is in general associated with beamforming. Simulation results demonstrate the high performance of the proposed beamforming algorithms. Copyright © 2011 Uyen Ly Dang et al.
Authors with CRIS profile
Michael Ruder
Technische Fakultät
Robert Schober
Wolfgang Gerstacker Lehrstuhl für Digitale Übertragung (IDC)
Wolfgang Gerstacker Lehrstuhl für Digitale Übertragung (IDC)
Involved external institutions
Canada (CA)How to cite
APA:
Dang, U.L., Ruder, M., Schober, R., & Gerstacker, W. (2011). MMSE beamforming for SC-FDMA transmission over MIMO ISI channels. EURASIP Journal on Advances in Signal Processing, 2011. https://doi.org/10.1155/2011/614571
MLA:
Dang, Uyen Ly, et al. "MMSE beamforming for SC-FDMA transmission over MIMO ISI channels." EURASIP Journal on Advances in Signal Processing 2011 (2011).
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