Comparison of Multi-User Scheduling Algorithms in MIMO
Communications
Abstract
This seminar considers wireless broadcast systems with multi-antennas at
the base station. Precoding at the transmitter reduces interference between users
allowing independent data streams to be sent to multiple users simultaneously. With
typically more users than transmit antennas, efficient selection of user subsets is
important. The talk compares the effectiveness of several user selection algorithms
and identifies situations where they are suboptimal. The impact of zero-forcing (ZF)
and dirty paper coding (DPC) precoding are considered. Simulation results are used to
verify the performance of each scheduling algorithm and different scenarios are
suggested when a particular algorithm is optimal. The inefficiencies of scheduling
algorithms with particular precoding techniques are discussed in the talk.
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