MMSE Beamforming for SC-FDMA Transmission over MIMO ISI Channels with Linear Equalization

Dang TUL, Ruder M, Gerstacker W, Schober R (2011)

Publication Language: English

Publication Type: Conference contribution

Publication year: 2011

Publisher: IEEE

Event location: Miami, FL

ISBN: 978-1-4244-5636-9

DOI: 10.1109/GLOCOM.2010.5684350

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 filter is optimized for minimization of the sum of the mean-squared errors (MMSEs) of the transmitted data streams after equalization. Here, MIMO minimum mean-squared error linear equalization (MMSE-LE) is considered. We prove that for SC-FDMA transmission eigen-beamforming diagonalizing the overall channel together with a nonuniform power distribution is the optimum beamforming strategy in the MMSE sense. The derived optimum power allocation 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. 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 excellent performance of the proposed beamforming algorithm.

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How to cite

APA:

Dang, T.U.L., Ruder, M., Gerstacker, W., & Schober, R. (2011). MMSE Beamforming for SC-FDMA Transmission over MIMO ISI Channels with Linear Equalization. In IEEE (Eds.), Proceedings of the 2010 IEEE Global Telecommunications Conference GLOBECOM 2010. Miami, FL, US: IEEE.

MLA:

Dang, Thi Uyen Ly, et al. "MMSE Beamforming for SC-FDMA Transmission over MIMO ISI Channels with Linear Equalization." Proceedings of the 2010 IEEE Global Telecommunications Conference GLOBECOM 2010, Miami, FL Ed. IEEE, IEEE, 2011.

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