On energy efficiency of pilot assisted modulation schemes

Author

Haghighi, Sahar Javaher ; Dechene, Dan J. ; Shami, Abdallah ; Primak, Serguei ; Wang, Xianbin

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Western Ontario, London, ON, Canada

fYear

2010

fDate

12-14 April 2010

Firstpage

1

Lastpage

5

Abstract

In this paper we investigate energy efficiency of basic modulation techniques in systems with partial channel state information (CSI) at the receiver, obtained via channel estimation. Both in-band and superimposed pilot aided channel estimation schemes are considered. Efficiency is defined as amount of energy per bit of information delivered. The efficiency is optimized with respect to the number and/or power of pilots for a given modulation. It is shown that there is an optimal power allocation for every modulation scheme and channel estimation scheme.

Keywords

Rayleigh channels; channel capacity; channel estimation; energy conservation; basic modulation techniques; channel estimation; energy efficiency; optimal power allocation; partial channel state information; pilot assisted modulation schemes; Batteries; Channel capacity; Channel estimation; Channel state information; Energy efficiency; Estimation error; Fading; Java; Signal to noise ratio; Wireless sensor networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Sarnoff Symposium, 2010 IEEE

Conference_Location

Princeton, NJ

Print_ISBN

978-1-4244-5592-8

Type

conf

DOI

10.1109/SARNOF.2010.5469758

Filename

5469758