TY - JOUR
T1 - Optimal Beamforming Designs for Wireless Information and Power Transfer in MISO Interference Channels
AU - Lee, Hoon
AU - Lee, Sang Rim
AU - Lee, Kyoung Jae
AU - Kong, Han Bae
AU - Lee, Inkyu
N1 - Funding Information:
This work was supported in part by the National Research Foundation of Korea (NRF) funded by the Korea Government (MSIP) under Grant 2014R1A2A1A10049769 and by the Ministry of Science, ICT and Future Planning, Korea, under Grant IITP-2015-H8601-15-1006 of the Convergence Information Technology Research Center program supervised by the Institute for Information and Communications Technology Promotion. The work of K.-J Lee was supported by Basic Science Research Program through the NRF funded by the Ministry of Science, ICT and Future Planning (NRF-2013R1A1A1060503).
Publisher Copyright:
© 2016 IEEE.
PY - 2015/9
Y1 - 2015/9
N2 - This paper investigates the optimal transmit beamforming designs for simultaneous wireless information and power transfer (SWIPT) in multiple-input single-output interference channels (IFC). Based on cooperation level among transmitters and receivsers, we classify the SWIPT IFC systems into two categories. First, we consider the IFC with partial cooperation, where only channel state information (CSI) is available at transmitters and receivers, but not the signal waveform. Second, we examine the IFC with signal cooperation, where both the CSI and the signal waveforms are known to transmitters and receivers. Then, for the both scenarios, we identify the Pareto boundary of the achievable rate-energy (R-E) region which characterizes the optimal tradeoff between the information rate and the harvested energy. To this end, the problems for maximizing the information rate are formulated with minimum required harvested energy constraint. To solve these non-convex problems, we introduce parameterization techniques for characterizing the R-E region. As a result, the original problem is separated into two subproblems, for which closed-form solutions are obtained by addressing the line search method. Finally, we provide numerical examples for the Pareto boundary of the R-E region through simulations.
AB - This paper investigates the optimal transmit beamforming designs for simultaneous wireless information and power transfer (SWIPT) in multiple-input single-output interference channels (IFC). Based on cooperation level among transmitters and receivsers, we classify the SWIPT IFC systems into two categories. First, we consider the IFC with partial cooperation, where only channel state information (CSI) is available at transmitters and receivers, but not the signal waveform. Second, we examine the IFC with signal cooperation, where both the CSI and the signal waveforms are known to transmitters and receivers. Then, for the both scenarios, we identify the Pareto boundary of the achievable rate-energy (R-E) region which characterizes the optimal tradeoff between the information rate and the harvested energy. To this end, the problems for maximizing the information rate are formulated with minimum required harvested energy constraint. To solve these non-convex problems, we introduce parameterization techniques for characterizing the R-E region. As a result, the original problem is separated into two subproblems, for which closed-form solutions are obtained by addressing the line search method. Finally, we provide numerical examples for the Pareto boundary of the R-E region through simulations.
KW - Simultaneous wireless information and power transfer
KW - multiple antenna techniques
KW - rate-energy region
UR - http://www.scopus.com/inward/record.url?scp=84963829217&partnerID=8YFLogxK
U2 - 10.1109/TWC.2015.2427168
DO - 10.1109/TWC.2015.2427168
M3 - Article
AN - SCOPUS:84963829217
VL - 14
SP - 4810
EP - 4821
JO - IEEE Transactions on Wireless Communications
JF - IEEE Transactions on Wireless Communications
SN - 1536-1276
IS - 9
M1 - 7097097
ER -