Channel Estimation for OFDM-Based Amplify-and-Forward Cooperative System Using Relay-Superimposed Pilots

Joint Authors

He, Xianwen
Dou, Gaoqi
Gao, Jun

Source

International Journal of Digital Multimedia Broadcasting

Issue

Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-6, 6 p.

Publisher

Hindawi Publishing Corporation

Publication Date

2018-03-01

Country of Publication

Egypt

No. of Pages

6

Main Subjects

Telecommunications Engineering
Electronic engineering
Information Technology and Computer Science

Abstract EN

For the OFDM-based Amplify-and-Forward cooperative system, a novel relay-superimposed pilot strategy is proposed, where the source pilot symbols are frequency division multiplexed to estimate the cascaded channel while relay pilot sequence is superimposed onto the top of the cooperative data stream for second-hop channel estimation.

This method avoids the loss of data rate for additional pilot subcarriers but results in the interference of unknown cooperative data.

To remove the interference of cooperative data during the estimation of second-hop channel, the Cooperative Interference Cancelation scheme assisted by cooperative data from direct link is proposed.

We derive the approximated lower bound for the MSE of second-hop channel estimation.

Simulation results are presented to validate the performance of the proposed schemes.

American Psychological Association (APA)

He, Xianwen& Dou, Gaoqi& Gao, Jun. 2018. Channel Estimation for OFDM-Based Amplify-and-Forward Cooperative System Using Relay-Superimposed Pilots. International Journal of Digital Multimedia Broadcasting،Vol. 2018, no. 2018, pp.1-6.
https://search.emarefa.net/detail/BIM-1170887

Modern Language Association (MLA)

He, Xianwen…[et al.]. Channel Estimation for OFDM-Based Amplify-and-Forward Cooperative System Using Relay-Superimposed Pilots. International Journal of Digital Multimedia Broadcasting No. 2018 (2018), pp.1-6.
https://search.emarefa.net/detail/BIM-1170887

American Medical Association (AMA)

He, Xianwen& Dou, Gaoqi& Gao, Jun. Channel Estimation for OFDM-Based Amplify-and-Forward Cooperative System Using Relay-Superimposed Pilots. International Journal of Digital Multimedia Broadcasting. 2018. Vol. 2018, no. 2018, pp.1-6.
https://search.emarefa.net/detail/BIM-1170887

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references

Record ID

BIM-1170887