TY - CONF
AU - F. Molina
AU - Sala, J.
AU - Villares, J.
AU - Rey, F.
T3 - 6th IEEE Global Conference on Signal and Information Processing
PY - 2018
Y1 - 2018
SP - 1
EP - 5
PB - Institute of Electrical and Electronics Engineers (IEEE)
DO - 10.1109/GlobalSIP.2018.8646436
UR - https://ieeexplore.ieee.org/document/8646436
AB - This work addresses the optimization of the network spectral efficiency (SE) under successive interference cancellation (SIC) at a given blocklength n. We adopt a proof-of-concept satellite scenario where network users can vary their transmission power and select their transmission rate from a set of encoders, for which decoding is characterized by a known packet error rate (PER) function. In the large-system limit, we apply variational calculus (VC) to obtain the user-energy distribution, the assigned per-user rate and the SIC decoding order maximizing the network SE under a sum-power constraint at the SIC input. We analyze two encoder sets: (i) an infinite set of encoders achieving information-theoretic finite blocklength PER results over a continuum of code rates, where the large-n second order expansion of the maximal channel coding rate is used; (ii) a feasible finite set of encoders. Simulations quantify the
performance gap between the two schemes.
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T2 - IEEE Global Conference on Signal and Information Processing
TI - Joint energy and rate allocation for successive interference cancellation in the finite blocklength regime
ER -