TY - JOUR
T1 - Hybrid Power Line/Wireless Systems
T2 - Power Allocation for Minimizing the Average Bit Error Probability
AU - De L. Filomeno, Mateus
AU - De Campos, Marcello L.R.
AU - Vincent Poor, H.
AU - Ribeiro, Moises V.
N1 - Publisher Copyright:
© 1972-2012 IEEE.
PY - 2022/2/1
Y1 - 2022/2/1
N2 - This paper investigates power allocation for minimizing the average bit error probability (BEP) in hybrid communication systems, more specifically hybrid power line/wireless systems (HPWSs). In this regard, a brief discussion of HPWSs is presented in order to point out the complementary characteristics of power line and wireless media. By considering orthogonal frequency-division multiplexing and maximal-ratio combining, optimization problems associated with the minimization of the average BEP in hybrid communication systems are formulated under two distinct transmission power constraints, called sum power and sum power-channel constraints. For both constraints, it is demonstrated that at most one medium should be used for data transmission over subchannels with the same index in order to minimize the average BEP in hybrid communication systems. Based on this finding, power allocation algorithms are derived for this purpose in HPWSs. Numerical analyses are then used to validate the proposed algorithms by comparing them with interior-point-based power allocation algorithms. In addition, performance comparisons show the advantage of the proposals over alternative algorithms from the literature, including previous algorithms proposed for maximizing the achievable data rate.
AB - This paper investigates power allocation for minimizing the average bit error probability (BEP) in hybrid communication systems, more specifically hybrid power line/wireless systems (HPWSs). In this regard, a brief discussion of HPWSs is presented in order to point out the complementary characteristics of power line and wireless media. By considering orthogonal frequency-division multiplexing and maximal-ratio combining, optimization problems associated with the minimization of the average BEP in hybrid communication systems are formulated under two distinct transmission power constraints, called sum power and sum power-channel constraints. For both constraints, it is demonstrated that at most one medium should be used for data transmission over subchannels with the same index in order to minimize the average BEP in hybrid communication systems. Based on this finding, power allocation algorithms are derived for this purpose in HPWSs. Numerical analyses are then used to validate the proposed algorithms by comparing them with interior-point-based power allocation algorithms. In addition, performance comparisons show the advantage of the proposals over alternative algorithms from the literature, including previous algorithms proposed for maximizing the achievable data rate.
KW - Bit error probability
KW - hybrid communication systems
KW - maximal-ratio combining
KW - orthogonal frequency division multiplexing
KW - power allocation
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U2 - 10.1109/TCOMM.2021.3139326
DO - 10.1109/TCOMM.2021.3139326
M3 - Article
AN - SCOPUS:85122577731
SN - 0090-6778
VL - 70
SP - 810
EP - 821
JO - IEEE Transactions on Communications
JF - IEEE Transactions on Communications
IS - 2
ER -