Pilot tone selection in OFDM amplified-and-forward relay system

Author

An, Linfeng ; Chen, Ming ; Wu, Bingyang

Author_Institution

Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China

fYear

2011

fDate

9-11 Nov. 2011

Firstpage

1

Lastpage

5

Abstract

Channel estimation for OFDM amplify-and-forward relay system requires transmission of pilot tones in source node, and different pilot tones can be derived according to different channel estimation algorithms and OFDM scenarios. This paper derives two different pilot tones with different scenarios: 1) no virtual subcarrier is applied in OFDM system and LS algorithm is used in channel estimation; 2) virtual subcarriers are applied in OFDM system and RLS algorithm is used in channel estimation.

Keywords

OFDM modulation; amplify and forward communication; channel estimation; least squares approximations; LS algorithm; OFDM amplified-and-forward relay system; RLS algorithm; channel estimation algorithm; orthogonal frequency division multiplexing; pilot tone selection; pilot tone transmission; source node; virtual subcarriers; Channel estimation; Mobile communication; Noise; OFDM; Relays; Time domain analysis; Vectors; LS; OFDM; RLS; pilot tone; relay; virtual subcarrier;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Signal Processing (WCSP), 2011 International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4577-1009-4

Electronic_ISBN

978-1-4577-1008-7

Type

conf

DOI

10.1109/WCSP.2011.6096783

Filename

6096783