A Limited Feedback SDMA scheme with Dynamic Multiplexing Order
2009 (English)In: SPAWC: 2009 IEEE 10TH WORKSHOP ON SIGNAL PROCESSING ADVANCES IN WIRELESS COMMUNICATIONS, NEW YORK: IEEE , 2009, 211-215 p.Conference paper (Refereed)
This paper proposes a new codebook-based SDMA scheme, which employs a variable number of active beams, i.e., a dynamic multiplexing order, to target a good tradeoff between the multiplexing gain and the inter-user interference. The new transmit scheme consist of a modification of the conventional feedback information and the development of a novel scheduling algorithm, where the new scheduling algorithm utilizes a merging of the channel correlation with limited feedback information, and is based on a proposed ML estimate of the possible user interferences. Simulation results demonstrate that in sparse networks the proposed SDMA scheme considerably outperforms some conventional SDMA schemes in terms of the sum throughput, with a comparable feedback overhead.
Place, publisher, year, edition, pages
NEW YORK: IEEE , 2009. 211-215 p.
SDMA, Limited feedback, Dynamic multiplexing order, User scheduling
Signal Processing Telecommunications
IdentifiersURN: urn:nbn:se:kth:diva-30177DOI: 10.1109/SPAWC.2009.5161777ISI: 000274650700043ScopusID: 2-s2.0-70449591958OAI: oai:DiVA.org:kth-30177DiVA: diva2:400985
10th IEEE Workshop on Signal Processing Advances in Wireless Communications Perugia, ITALY, JUN 21-24, 2009
QC 201103012011-03-012011-02-212012-01-23Bibliographically approved