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2006
IEEE

Group-Optimal Linear Space-Time Multiuser Detection

10 years 5 months ago
Group-Optimal Linear Space-Time Multiuser Detection
Multiuser detection (MUD) techniques are known to improve the performance of CDMA cellular communication systems. This performance improvement usually comes at a large computational cost. To reduce the complexity, it has been proposed recently to exploit the spatial dimension by grouping users in clusters and apply MUD individually to each group. This approach leads to a potentially significant complexity reduction, at a marginal cost in performance. In this work we propose a new space-time receiver structure based on the group-optimal MMSE linear detector. The numerical results show that the proposed technique performs close to the optimal full space-time linear MMSE MUD receiver but with a significantly lower complexity. Keywords— Multiuser detection, space-time signal processing, DS-CDMA.
Benoit Pelletier, Benoît Champagne
Added 10 Jun 2010
Updated 10 Jun 2010
Type Conference
Year 2006
Where CCECE
Authors Benoit Pelletier, Benoît Champagne
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