Performance enhancement for AF relay MIMO/OFDM with complex HTRCI pilot signal

Author

Ida, Yuta ; Chang-Jun Ahn ; Matsumoto, Takahiro ; Matsufuji, Shinya

Author_Institution

Grad. Sch. of Sci. & Eng., Yamaguchi Univ., Ube, Japan

fYear

2014

Firstpage

325

Lastpage

330

Abstract

Recently, amplify-and-forward (AF) multiple-input multiple-output (MIMO) relay transmissions are studied to achieve high quality communications. On the other hand, they have to estimate all channels between the source-relay and relay-destination nodes in the receiver. In MIMO orthogonal frequency division multiplexing (OFDM) systems, high time resolution carrier interferometry (HTRCI) has been proposed to achieve an accurate channel estimation (CE) with a small number of pilot signals. However, the conventional HTRCI-MIMO/OFDM is not adopted in AF relay transmissions. Therefore, in this paper, we propose the complex HTRCI (C-HTRCI) pilot signal to achieve an accurate CE for AF relay MIMO/OFDM systems.

Keywords

MIMO communication; OFDM modulation; amplify and forward communication; channel estimation; radio receivers; radiowave interferometry; relay networks (telecommunication); AF relay MIMO-OFDM system; OFDM system; amplify and forward relay transmission; channel estimation; complex HTRCI pilot signal; high time resolution carrier interferometry; multiple input multiple output; orthogonal frequency division multiplexing; receiver; relay destination node; source-relay node; Channel estimation; Interference; MIMO; OFDM; Receivers; Relays; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications (APCC), 2014 Asia-Pacific Conference on

Type

conf

DOI

10.1109/APCC.2014.7091656

Filename

7091656