Individual Channel Estimation in a Diamond Relay Network Using Relay-Assisted Training
Joint Authors
Source
International Journal of Digital Multimedia Broadcasting
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-11-08
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Telecommunications Engineering
Electronic engineering
Information Technology and Computer Science
Abstract EN
We consider the training design and channel estimation in the amplify-and-forward (AF) diamond relay network.
Our strategy is to transmit the source training in time-multiplexing (TM) mode while each relay node superimposes its own relay training over the amplified received data signal without bandwidth expansion.
The principal challenge is to obtain accurate channel state information (CSI) of second-hop link due to the multiaccess interference (MAI) and cooperative data interference (CDI).
To maintain the orthogonality between data and training, a modified relay-assisted training scheme is proposed to migrate the CDI, where some of the cooperative data at the relay are discarded to accommodate relay training.
Meanwhile, a couple of optimal zero-correlation zone (ZCZ) relay-assisted sequences are designed to avoid MAI.
At the destination node, the received signals from the two relay nodes are combined to achieve spatial diversity and enhanced data reliability.
The simulation results are presented to validate the performance of the proposed schemes.
American Psychological Association (APA)
He, Xianwen& Dou, Gaoqi& Gao, Jun. 2017. Individual Channel Estimation in a Diamond Relay Network Using Relay-Assisted Training. International Journal of Digital Multimedia Broadcasting،Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1165892
Modern Language Association (MLA)
He, Xianwen…[et al.]. Individual Channel Estimation in a Diamond Relay Network Using Relay-Assisted Training. International Journal of Digital Multimedia Broadcasting No. 2017 (2017), pp.1-8.
https://search.emarefa.net/detail/BIM-1165892
American Medical Association (AMA)
He, Xianwen& Dou, Gaoqi& Gao, Jun. Individual Channel Estimation in a Diamond Relay Network Using Relay-Assisted Training. International Journal of Digital Multimedia Broadcasting. 2017. Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1165892
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1165892