Rate-Energy Region in Wireless Information and Power Transfer: New Receiver Architecture and Practical Modulation

02/05/2018
by   Young-bin Kim, et al.
0

When simultaneous wireless information and power transfer is carried out, a fundamental tradeoff between achievable rate and harvested energy exists because the received power is used for two different purposes. The tradeoff is well characterized by the rate-energy region, and several techniques have been proposed to improve the achievable rate-energy region. However, the existing techniques still have a considerable loss in either energy or rate and thus the known achievable rate-energy regions are far from the ideal one. Deriving tight upper and lower bounds on the rate-energy region of our proposed scheme, we prove that the rate-energy region can be expanded almost to the ideal upper bound. Contrary to the existing techniques, in the proposed scheme, the information decoding circuit not only extracts amplitude and phase information but also combines the extracted information with the amplitude information obtained from the rectified signal. Consequently, the required energy for decoding can be minimized, and thus the proposed scheme achieves a near-optimal rate-energy region, which implies that the fundamental tradeoff in the achievable rate-energy region is nearly eliminated. To practically account for the theoretically achievable rate-energy region, we also present practical examples with an M-ary multi-level circular QAM with Gaussian maximum likelihood detection.

READ FULL TEXT
research
02/10/2022

Achievable Information-Energy Region in the Finite Block-Length Regime with Finite Constellations

This paper characterizes an achievable information-energy region of simu...
research
05/05/2023

Achievable Rate-Power Tradeoff in THz SWIPT Systems with Resonant Tunnelling Diodes

In this paper, we study terahertz (THz) simultaneous wireless informatio...
research
07/12/2023

Rate-Power Tradeoff in THz SWIPT Systems Employing Resonant Tunnelling Diode-based EH Circuits

In this paper, we study THz simultaneous wireless information and power ...
research
11/19/2022

ISAC Meets SWIPT: Multi-functional Wireless Systems Integrating Sensing, Communication, and Powering

This paper unifies integrated sensing and communication (ISAC) and simul...
research
01/24/2016

Synthesis of Gaussian Trees with Correlation Sign Ambiguity: An Information Theoretic Approach

In latent Gaussian trees the pairwise correlation signs between the vari...
research
03/05/2019

DoF Region of the MISO BC with Partial CSIT: Proof by Inductive Fourier-Motzkin Elimination

We provide a fresh perspective on the problem of characterizing the DoF ...
research
11/04/2019

Rate-Power Region of SWIPT Systems Employing Nonlinear Energy Harvester Circuits with Memory

In this paper, we study the rate-power region of a simultaneous wireless...

Please sign up or login with your details

Forgot password? Click here to reset