TY - GEN
T1 - Wireless information and power transfer over an AWGN channel
T2 - 2017 IEEE Information Theory Workshop, ITW 2017
AU - Varasteh, Morteza
AU - Rassouli, Borzoo
AU - Clerckx, Bruno
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2018/1/31
Y1 - 2018/1/31
N2 - Simultaneous transmission of information and power over a point-to-point complex Additive White Gaussian Noise (AWGN) channel is studied. In contrast with the literature that relies on an inaccurate linear model of the energy harvester, an experimentally-validated nonlinear model is considered. A general form of the delivered Direct Current (DC) power in terms of system baseband parameters is derived, which demonstrates the dependency of the delivered DC power on higher order statistics of the channel input distribution. The optimization problem of maximizing Rate-Power (R-P) region is studied. Assuming that the Channel gain is known at both the receiver and the transmitter, and constraining to independent and identically distributed (i.i.d.) channel inputs determined only by their first and second moment statistics, an inner bound for the general problem is obtained. Notably, as a consequence of the harvester nonlinearity, the studied inner bound exhibits a tradeoff between the delivered power and the rate of received information. It is shown that the tradeoff-characterizing input distribution is with mean zero and with asymmetric power allocations to the real and imaginary dimensions.
AB - Simultaneous transmission of information and power over a point-to-point complex Additive White Gaussian Noise (AWGN) channel is studied. In contrast with the literature that relies on an inaccurate linear model of the energy harvester, an experimentally-validated nonlinear model is considered. A general form of the delivered Direct Current (DC) power in terms of system baseband parameters is derived, which demonstrates the dependency of the delivered DC power on higher order statistics of the channel input distribution. The optimization problem of maximizing Rate-Power (R-P) region is studied. Assuming that the Channel gain is known at both the receiver and the transmitter, and constraining to independent and identically distributed (i.i.d.) channel inputs determined only by their first and second moment statistics, an inner bound for the general problem is obtained. Notably, as a consequence of the harvester nonlinearity, the studied inner bound exhibits a tradeoff between the delivered power and the rate of received information. It is shown that the tradeoff-characterizing input distribution is with mean zero and with asymmetric power allocations to the real and imaginary dimensions.
UR - http://www.scopus.com/inward/record.url?scp=85046372356&partnerID=8YFLogxK
U2 - 10.1109/ITW.2017.8278010
DO - 10.1109/ITW.2017.8278010
M3 - Conference contribution
AN - SCOPUS:85046372356
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 181
EP - 183
BT - 2017 IEEE Information Theory Workshop, ITW 2017
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 6 November 2017 through 10 November 2017
ER -