Some results on 16-QAM MIMO detection using semidefinite relaxation
2008 (English)In: 2008 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING, 2008, 2673-2676 p.Conference paper (Refereed)
Semidefinite relaxation (SDR) is a high-performance efficient approach to MIMO detection especially for the BPSK or QPSK constellations. Recently, a number of research endeavors have focused on extending SDR to the case of 16-QAM constellations. This paper reports two interesting and useful results on this problem. First, we show that two of the existing 16-QAM SDR receivers, namely the polynomial-inspired SDR (PI-SDR) and bound-constrained SDR (BC-SDR) methods, are equivalent. Second, we develop a specialized interior-point algorithm for the implementation of BC-SDR. The proposed algorithm is computationally efficient exploiting the BC-SDR structures, and enables us to handle larger problem sizes in practice.
Place, publisher, year, edition, pages
2008. 2673-2676 p.
, International Conference on Acoustics Speech and Signal Processing (ICASSP), ISSN 1520-6149
MIMO detection, semidefinite relaxation, convex optimization
IdentifiersURN: urn:nbn:se:kth:diva-34915DOI: 10.1109/ICASSP.2008.4518199ISI: 000257456701330ISBN: 978-1-4244-1483-3OAI: oai:DiVA.org:kth-34915DiVA: diva2:427195
33rd IEEE International Conference on Acoustics, Speech and Signal Processing Las Vegas, NV, MAR 30-APR 04, 2008
QC 201106272011-06-272011-06-172011-06-27Bibliographically approved