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LINEAR TRANSCEIVER DESIGN IN A MULTIUSER MIMO SYSTEM WITH QUANTIZED CHANNEL STATE INFORMATION
 

Summary: LINEAR TRANSCEIVER DESIGN IN A MULTIUSER MIMO SYSTEM WITH QUANTIZED
CHANNEL STATE INFORMATION
Muhammad Nazmul Islam and Raviraj Adve
Department of Electrical and Computer Engineering, University of Toronto
10 King's College Road, Toronto, Ontario, M5S 3G4, Canada
ABSTRACT
We design an end-to-end linear transceiver in the downlink
of a multi-user multiple-input multiple-output (MIMO) sys-
tem with multiple data streams per user and quantized chan-
nel state information at the transmitter. We minimize the sum
mean squared error (SMSE) under a sum power constraint
with quantization based on the mean squared inner product.
We make three contributions: (i) we remove dimensional-
ity constraints on the MIMO configuration and the resulting
feedback overhead scales linearly with the number of data
streams; (ii) we use the combination of eigenmode combining
and minimum mean square error receiver that makes user's
feedback mutually independent; (iii) we analyze SMSE at
high signal-to-noise ratio and large number of transmit anten-
nas and show the flooring effect of limited feedback systems

  

Source: Adve, Raviraj - Department of Electrical and Computer Engineering, University of Toronto

 

Collections: Engineering