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Soft-Decision COVQ Design for Space-Time Orthogonal Block Coded Channels
 

Summary: Soft-Decision COVQ Design for Space-Time
Orthogonal Block Coded Channels 
Firouz Behnamfar y , Fady Alajaji yz and Tamas Linder yz
y Department of Electrical and Computer Engineering z Department of Mathematics and Statistics
Queen's University, Kingston, Ontario K7L 3N6, Canada.
ffirouz, fady, linderg@mast.queensu.ca
Abstract | We introduce a soft-decision decod-
ing channel-optimized vector quantizer (COVQ)
to transmit analog sources over space-time or-
thogonal block (STOB) coded channels with bi-
nary phase-shift keying (BPSK) modulation. We
propose a linear combining method to utilize the
signals of all receive antennas. The combiner has
a very simple structure when optimized under the
maximum signal-to-noise ratio criterion. Further-
more, we note that the concatenation of the sys-
tem blocks between the COVQ encoder and de-
coder is equivalent to a discrete memoryless chan-
nel (DMC) with a closed-form transition distribu-
tion expression. For a COVQ of dimension 2 and

  

Source: Alajaji, Fady - Department of Mathematics and Statistics, Queen's University (Kingston)
Linder, Tamás - Department of Mathematics and Statistics, Queen's University (Kingston)

 

Collections: Engineering