Sciweavers

Share
ICC
2008
IEEE

Multiuser MIMO Downlink with Limited Feedback Using Transmit-Beam Matching

9 years 4 months ago
Multiuser MIMO Downlink with Limited Feedback Using Transmit-Beam Matching
— The multiuser multiple-input multiple-output (MIMO) broadcast channel uses multiple antennas at the transmitter to simultaneously deliver information to multiple users. Despite the theoretical capacity gains, the actual throughput of the system with limited feedback of channel state information suffers due to interspatial stream interference caused by quantization errors. This paper introduces a new method to mitigate the interference: transmit-beam matching. Using multiple receive antennas, transmit-beam matching minimizes the inter-spatial stream interference by each user’s effective channel to the transmit-beam. It is evaluated based on a recent MIMO broadcast channel technique with limited feedback, per-user unitary rate control (PU2 RC) and shown to effectively mitigate the interference.
Tae-Hyun Kim, Robert W. Heath Jr., Sunghyun Choi
Added 30 May 2010
Updated 30 May 2010
Type Conference
Year 2008
Where ICC
Authors Tae-Hyun Kim, Robert W. Heath Jr., Sunghyun Choi
Comments (0)
books