Diversity-Multiplexing Tradeoff of Dynamic Harvest-and-Forward Cooperation

Author

Ishibashi, Koji ; Chin Keong Ho ; Krikidis, Ioannis

Author_Institution

Adv. Wireless & Commun. Res. Center, Univ. of Electro-Commun., Tokyo, Japan

Volume

4

Issue

6

fYear

2015

Firstpage

633

Lastpage

636

Abstract

We analyze the diversity-multiplexing tradeoff (DMT) of the dynamic harvest-and-forward (DHF) cooperation to clearly explain the achievable diversity order. Surprisingly, DHF cooperation with a relay that harvests energy from a wireless source achieves the same DMT as when the relay is connected to a fixed power supply, by supplying the energy harvesting (EH) period to be asymptotically small. For nontrivial EH period, however we show that the same DMT is achieved for a sufficiently small multiplexing gain (or corresponding large diversity gain), beyond which the DMT degrades.

Keywords

cooperative communication; decode and forward communication; diversity reception; energy harvesting; multiplexing; telecommunication power management; diversity-multiplexing tradeoff; dynamic decode-and-forward cooperation; dynamic harvest-and-forward cooperation; energy harvesting; fixed power supply; wireless source; Diversity methods; Energy harvesting; Fading; Protocols; Radio frequency; Relays; Wireless communication; Cooperative diversity; diversity-multiplexingtradeoff (DMT); dynamic decode-and-forward(DDF); energy harvesting; simultaneously wireless information and powertransfer (SWIPT);

fLanguage

English

Journal_Title

Wireless Communications Letters, IEEE

Publisher

ieee

ISSN

2162-2337

Type

jour

DOI

10.1109/LWC.2015.2476490

Filename

7239570