Zarei S, Gerstacker W, Schober R (2019)
Publication Type: Conference contribution
Publication year: 2019
Publisher: VDE Verlag GmbH
Pages Range: 422-428
Conference Proceedings Title: WSA 2016 - 20th International ITG Workshop on Smart Antennas
Event location: Munich, DEU
ISBN: 9783800741779
In this paper, we propose an uplink/downlink duality framework for multi-cell multi-user multiple-input multiple-output (MU-MIMO) systems with residual hardware impairments (HWIs) at the base station and the user terminals. By employing the proposed uplink/downlink duality framework, complex downlink optimization problems can be transformed to equivalent dual uplink problems which are easier to solve. Thereby, for the same total transmit power, the same per-user signal-to-interference-plus-noise ratios (SINRs) are achieved in downlink and uplink. We apply the proposed uplink/downlink duality, and derive a multi-cell HWI aware minimum mean square error (MCHWA-MMSE) precoder. Our simulation results show that the proposed MCHWA-MMSE precoder achieves a substantially higher sum rate than conventional MMSE and conjugate beamforming precoders.
APA:
Zarei, S., Gerstacker, W., & Schober, R. (2019). Uplink/downlink duality in multi-cell Mu-MIMO systems with hardware impairments. In WSA 2016 - 20th International ITG Workshop on Smart Antennas (pp. 422-428). Munich, DEU: VDE Verlag GmbH.
MLA:
Zarei, Shahram, Wolfgang Gerstacker, and Robert Schober. "Uplink/downlink duality in multi-cell Mu-MIMO systems with hardware impairments." Proceedings of the 20th International ITG Workshop on Smart Antennas, WSA 2016, Munich, DEU VDE Verlag GmbH, 2019. 422-428.
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