PAR-aware multi-user precoder for the large-scale MIMO-OFDM downlink
2012 (English)Conference paper (Refereed)
We consider an orthogonal frequency-division multiplexing (OFDM)-based downlink transmission scheme for large-scale multi-user (MU) multiple-input multiple-output (MIMO) wireless systems. In order to transmit signals with low peak-to-average (power) ratio (PAR), we propose to exploit the massive degrees-of-freedom available in large-scale MU-MIMO-OFDM systems. Specifically, we jointly perform MU precoding, OFDM modulation, and PAR reduction by solving a convex optimization problem at the base station. Numerical results demonstrate tremendous PAR-reduction capabilities of the proposed method, which eventually enables us to use low-cost RF components for the large-scale MU-MIMO-OFDM downlink.
Place, publisher, year, edition, pages
2012. 806-810 p.
, 2012 International Symposium on Wireless Communication Systems (ISWCS), ISSN 2154-0217
IdentifiersURN: urn:nbn:se:liu:diva-129058DOI: 10.1109/ISWCS.2012.6328479ISBN: 978-1-4673-0760-4ISBN: 978-1-4673-0761-1OAI: oai:DiVA.org:liu-129058DiVA: diva2:935041
2012 International Symposium on Wireless Communication Systems (ISWCS). 28-31 Aug. 2012, Paris