Apparatus and method for low-complexity scheduling in...

Details Apparatus and method for low-complexity scheduling in... Apparatus and method for low-complexity scheduling in...

2011-08-16

2011-08-16

Kim, Kevin Y (Department: 2611)

Pulse or digital communications

Synchronizers

Feedback, receiver to transmitter

C455S452200

Reexamination Certificate

active

08000427

ABSTRACT:
Provided is an apparatus and method for low-complexity scheduling in a multi-user Multi-Input Multi-Output (MIMO) system. In a method for scheduling in a MIMO system, a vector is set on the basis of channel information for all user terminals. A scalar for the vector is initialized. A user terminal that has the greatest scalar among unselected user terminals is selected. A user set is updated by adding the selected user terminal therein. The vector and the scalar for a user terminal not included in the user set are updated. Accordingly, a high transmission capacity can be provided while minimizing the influence of an interference signal. Also, the computation amount can be reduced greatly.

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Primolevo et al., “Channel Aware Scheduling for Broadcast MIMO Systems with Orthogonal Linear Precoding and Fairness Constraints”, 2005.
Lee et al.: An Eigen-Based MIMO Multiuser Scheduler Robust to Spatial Channel Correlation, vol. 2, May 30, 2005.
Berenguer et al.: Opportunistic User Scheduling and Antenna Selection in the Downlink of Multiuser MISO Systems, vol. 2, May 30, 2005.

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