TY - GEN
T1 - Modulation for MIMO networks with several users
AU - Khina, Anatoly
AU - Hitron, Ayal
AU - Erez, Uri
PY - 2011
Y1 - 2011
N2 - In a recent work, a capacity-achieving scheme for the common-message two-user MIMO broadcast channel, based on single-stream coding and decoding, was described. This was obtained via a novel joint unitary triangularization which is applied to the corresponding channel matrices. In this work, the triangularization is generalized, to any (finite) number of matrices, allowing multi-user applications. To that end, multiple channel uses are jointly treated, in a manner reminiscent of space-time coding. As opposed to the two-user case, in the general case there does not always exist a perfect (capacity-achieving) solution. However, a nearly optimal scheme (with vanishing loss in the limit of large blocks) always exists. Common-message broadcasting is but one example of communication networks with MIMO links which can be solved using an approach coined "Network Modulation"; the extension beyond two links carries over to these problems.
AB - In a recent work, a capacity-achieving scheme for the common-message two-user MIMO broadcast channel, based on single-stream coding and decoding, was described. This was obtained via a novel joint unitary triangularization which is applied to the corresponding channel matrices. In this work, the triangularization is generalized, to any (finite) number of matrices, allowing multi-user applications. To that end, multiple channel uses are jointly treated, in a manner reminiscent of space-time coding. As opposed to the two-user case, in the general case there does not always exist a perfect (capacity-achieving) solution. However, a nearly optimal scheme (with vanishing loss in the limit of large blocks) always exists. Common-message broadcasting is but one example of communication networks with MIMO links which can be solved using an approach coined "Network Modulation"; the extension beyond two links carries over to these problems.
UR - http://www.scopus.com/inward/record.url?scp=80054799534&partnerID=8YFLogxK
U2 - 10.1109/ISIT.2011.6034006
DO - 10.1109/ISIT.2011.6034006
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AN - SCOPUS:80054799534
SN - 9781457705953
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 2452
EP - 2456
BT - 2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011
T2 - 2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011
Y2 - 31 July 2011 through 5 August 2011
ER -