DQLC optimization for joint source channel coding of correlated sources over fading MAC

P Suárez-Casal, O Fresnedo… - 2018 26th European …, 2018 - ieeexplore.ieee.org
2018 26th European Signal Processing Conference (EUSIPCO), 2018ieeexplore.ieee.org
Distributed Quantizer Linear Coding (DQLC) is a joint source-channel coding scheme that
encodes and transmits distributed Gaussian sources over a MAC under severe delay
constraints, providing significant gains when compared to uncoded transmissions. DQLC,
however, relies on the appropriate optimization of its parameters depending on source
correlation, channel state and noise variance. In this work, we propose a parameter
optimization strategy that relies on the lattice structure of the mapping, reduces the number …
Distributed Quantizer Linear Coding (DQLC) is a joint source-channel coding scheme that encodes and transmits distributed Gaussian sources over a MAC under severe delay constraints, providing significant gains when compared to uncoded transmissions. DQLC, however, relies on the appropriate optimization of its parameters depending on source correlation, channel state and noise variance. In this work, we propose a parameter optimization strategy that relies on the lattice structure of the mapping, reduces the number of parameters to estimate, and exhibits lower computational complexity.
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