Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
Linear Precoding for Multiuser MIMO-OFDM Hassen Karaa, Raviraj S. Adve and Adam J. Tenenbaum
 

Summary: Linear Precoding for Multiuser MIMO-OFDM
Systems
Hassen Karaa, Raviraj S. Adve and Adam J. Tenenbaum
Dept. of Electrical and Computer Engineering, University of Toronto
10 King's College Road, Toronto, Ontario, M5S 3G4, Canada
Email: {hkaraa,rsadve,adam}@comm.utoronto.ca
Abstract-- This paper develops linear precoding schemes
for the downlink in multiuser multiple-input multiple-output
(MIMO) orthogonal frequency division multiplexing (OFDM)
systems with multiple data streams per user. We extend an
existing multiuser MIMO algorithm, that jointly optimizes the
power allocation and the transmit and receive filters, to MIMO-
OFDM systems. One extension is to solve the resulting problem of
joint power allocation across OFDM subcarriers. This paper also
presents efficient methods to reduce the computational load of the
algorithm by interpolating the precoding and decoding matrices
corresponding to different OFDM subcarriers. The simulations
show that the proposed interpolation scheme outperforms pre-
viously known schemes, but requires that the precoder for each
subcarrier be tailored to the interpolated receiver.

  

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

 

Collections: Engineering