Tradeoff of Transmitted Power in Time-Reversed Impulse Radio Ultrawideband Communications

Author

Liu, Xiaofei ; Wang, Bing-Zhong ; Li, Le-Wei

Author_Institution

Inst. of Appl. Phys., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

Volume

8

fYear

2009

fDate

7/1/1905 12:00:00 AM

Firstpage

1426

Lastpage

1429

Abstract

In this letter, the tradeoff of transmitted power in time-reversed impulse radio ultrawideband (UWB) communications is investigated to make sure that the system works under the Federal Communications Commission´s (FCC´s) emission mask and, at the same time, keeps its enhanced performance. The energy spectral density of time-reversed pulses is discussed, and then an approximate value of 0.79 for the so-called compensation coefficient is obtained using the Monte Carlo simulation. In addition, an evaluation of the time-reversed transmission under an indoor office environment is carried out based on the finite-difference time-domain (FDTD) method. It is verified that the time-reversed UWB communication remains the improvement compared to the conventional ones, though the tradeoff demands lower transmit power.

Keywords

Monte Carlo methods; finite difference time-domain analysis; ultra wideband communication; Monte Carlo simulation; energy spectral density; federal communication commission emission mask; finite difference time-domain method; impulse radio; time reversal; tradeoff; transmitted power; ultrawideband communication; Energy spectral density (ESD); finite-difference time-domain (FDTD); time reversal; ultrawideband (UWB);

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2010.2040798

Filename

5393071