DMT of Multihop Networks: End Points and Computational Tools
Data(s) |
01/02/2012
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Resumo |
In this paper, the diversity-multiplexing gain tradeoff (DMT) of single-source, single-sink (ss-ss), multihop relay networks having slow-fading links is studied. In particular, the two end-points of the DMT of ss-ss full-duplex networks are determined, by showing that the maximum achievable diversity gain is equal to the min-cut and that the maximum multiplexing gain is equal to the min-cut rank, the latter by using an operational connection to a deterministic network. Also included in the paper, are several results that aid in the computation of the DMT of networks operating under amplify-and-forward (AF) protocols. In particular, it is shown that the colored noise encountered in amplify-and-forward protocols can be treated as white for the purpose of DMT computation, lower bounds on the DMT of lower-triangular channel matrices are derived and the DMT of parallel MIMO channels is computed. All protocols appearing in the paper are explicit and rely only upon AF relaying. Half-duplex networks and explicit coding schemes are studied in a companion paper. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/44170/1/DMT.pdf Sreeram, K and Birenjith, S and Kumar, Vijay P (2012) DMT of Multihop Networks: End Points and Computational Tools. In: IEEE Transactions on Information Theory, 58 (2). pp. 804-819. |
Publicador |
IEEE |
Relação |
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6145482 http://eprints.iisc.ernet.in/44170/ |
Palavras-Chave | #Electrical Communication Engineering |
Tipo |
Journal Article PeerReviewed |