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Block diagonalisation-based multiuser multiple input multiple output-aided downlink relaying

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4 Author(s)
Liu, W. ; State Key Labs. of ISN, Xidian Univ., Xian, China ; Li, C. ; Li, J.-D. ; Hanzo, L.

A novel block diagonalisation (BD)-based Multiuser multiple input multiple output (MU-MIMO)-aided relaying scheme is proposed for downlink transmissions, which does not require any channel state information at the base station (BS) and decomposes a MU-MIMO-aided relaying system into several parallel single-user MIMO-assisted relaying schemes. Furthermore, based on the proposed algorithm the optimal linear processing matrix designed for the maximum achievable capacity is derived, which significantly outperforms the so-called naive weighting matrix.

Published in:

Communications, IET  (Volume:6 ,  Issue: 15 )