PROJECT TITLE :
Adaptive Uniform Channel Decomposition in MU-MIMO-OFDM: Application to IEEE 802.11ac
This work considers the look of multiuser MIMO (MU-MIMO) schemes suitable for orthogonal frequency division multiplex (OFDM) systems like those being currently discussed among IEEE 802.11ac. A general framework is proposed showing that the singular worth decomposition (SVD), the geometric mean decomposition (GMD), and also the uniform channel decomposition (UCD) are all viable mechanisms on that to get the design. Nonetheless, some striking variations in terms of performance among these three schemes are uncovered. In specific, a completely unique adaptive transmission theme based on the UCD is introduced that permits multiuser MIMO-OFDM gains to be realized, clearly outperforming those obtained using the SVD or GMD counterparts while remaining totally compliant with the most recent IEEE 802.11ac specification. Relying on the UCD properties, the proposed technique takes under consideration the availability of a finite modulation and coding set and restrictions on transmission mode choice defined inside the standard, to incorporate an optimisation step in charge of selecting the quantity of transmitted knowledge streams to every user to maximise the system throughput. Comprehensive simulation ends up in the context of IEEE 802.11ac confirm the applicability and advantage of the adaptive UCD-based style.
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