TY - JOUR
ID - 1120
TI - Power Allocation Strategies in Block-Fading Two-Way Relay Networks
JO - Journal of Communication Engineering
JA - JCE
LA - en
SN - 2322-4088
AU - Akhlaghi, Sorosh
AU - Khodam Hoseini, Sayed Ali
AD - Shahed
AD - Shahed University
Y1 - 2019
PY - 2019
VL - 8
IS - 2
SP - 313
EP - 324
KW - Multi-layer Coding
KW - calculus of variation
KW - Power Allocation
DO - 10.22070/jce.2020.3958.1123
N2 - This paper aims at investigating the superiority of power allocation strategies, based on calculus of variations in a point-to-point two-way relay-assisted channel incorporating the amplify and forward strategy. Single and multilayer coding strategies for two cases of having and not having the channel state information (CSI) at the transmitters are studied, respectively. Using the notion of calculus of variations, the optimum power allocation strategy across code layers for the case of employing Multilayer coding is derived and is shown to surpass the conventional outage approach employing single layer coding strategy in terms of the achievable sum rate of the network. Moreover, for the case of knowing the CSI at the transmitters, an adaptive power control strategy is analytically derived, and its achievable sum-rate is compared to that of the single-layer strategy under peak power constraint.
UR - http://jce.shahed.ac.ir/article_1120.html
L1 - http://jce.shahed.ac.ir/article_1120_052a048fd5d3d4478db415156ef1d6da.pdf
ER -