Title :
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
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;
Conference_Titel :
Sarnoff Symposium, 2010 IEEE
Conference_Location :
Princeton, NJ
Print_ISBN :
978-1-4244-5592-8
DOI :
10.1109/SARNOF.2010.5469758
