Sphere Packing Modulation in the SDMA Uplink Using K-Best Sphere Detection

Recently, the turbo-detected sphere packing (SP) aided space-time block-coding (STBC) STBC-SP scheme was demonstrated to provide useful performance improvements over conventionally-modulated orthogonal design-based STBC schemes in the context of single-user multiple-input multiple-output (SU-MIMO) s...

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Published in:IEEE signal processing letters 2009-04, Vol.16 (4), p.291-294
Main Authors: Li Wang, Alamri, O., Hanzo, L.
Format: Article
Language:English
Subjects:
Blocking
Complexity
Constellation diagram
Design engineering
Employment
Equations
Gain
MIMO
Modulation
Multiaccess communication
Performance gain
Receiving antennas
Sake
Signal design
Signal processing
Transmitting antennas
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Hanzo, L.
description Recently, the turbo-detected sphere packing (SP) aided space-time block-coding (STBC) STBC-SP scheme was demonstrated to provide useful performance improvements over conventionally-modulated orthogonal design-based STBC schemes in the context of single-user multiple-input multiple-output (SU-MIMO) systems. Hence, in this letter, we extend its employment to the multiuser MIMO (MU-MIMO) scenario. For the sake of achieving a near maximum a posteriori (MAP) performance while imposing a moderate complexity, we specifically design the K -best sphere detection (SD) scheme for supporting the operation of the SP-modulated system, since the conventional SD cannot be directly applied to such a system. Consequently, with the aid of our modified SD, a significant performance gain can be achieved by the SP-modulated system over its conventionally-modulated counterpart in the context of MU-MIMO systems.
doi_str_mv 10.1109/LSP.2008.2012219
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subjects Blocking
Complexity
Constellation diagram
Design engineering
Employment
Equations
Gain
MIMO
Modulation
Multiaccess communication
Performance gain
Receiving antennas
Sake
Signal design
Signal processing
Transmitting antennas
title Sphere Packing Modulation in the SDMA Uplink Using K-Best Sphere Detection
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