A practical precoding approach for radar/communications spectrum sharing

Alireza Babaei, William H. Tranter, Tamal Bose

Research output: Chapter in Book/Report/Conference proceedingConference contribution

24 Citations (Scopus)

Abstract

In this paper, we consider spectrum sharing between multiple-input multiple-output (MIMO) radar system and a communication system modeled as MIMO interference channel. We derive a zero-forcing precoder for radar transmitter which completely eliminates the radar interference to communication users. Obtaining the precoder requires the knowledge of an effective interference channel matrix composed of the channel matrices to all of the communication receivers and the postprocessing matrices employed by them. We propose a channel estimation phase in which all of the communication receivers coordinate in their choice of training symbols and power transmission and the radar transmitter can estimate the effective interference channel. We investigate the effect of radar precoder and channel estimation error on the performance of radar and interference to communication receivers. Our results indicate that while the precoder null steers the radar interference to communication users it degrades the radar performance by introducing correlation to the probing signals. We show that this performance loss can be compensated for by increasing the number of radar antennas.

Original languageEnglish (US)
Title of host publicationProceedings of the 2013 8th International Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2013
PublisherIEEE Computer Society
Pages13-18
Number of pages6
ISBN (Print)9781479921201
DOIs
StatePublished - 2013
Event2013 8th International Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2013 - Washington, DC, United States
Duration: Jul 8 2013Jul 10 2013

Other

Other2013 8th International Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2013
CountryUnited States
CityWashington, DC
Period7/8/137/10/13

Fingerprint

Radar
Radar interference
Radar transmitters
Communication
Channel estimation
Radar antennas
Radar systems
Power transmission
Communication systems

ASJC Scopus subject areas

  • Computer Networks and Communications

Cite this

Babaei, A., Tranter, W. H., & Bose, T. (2013). A practical precoding approach for radar/communications spectrum sharing. In Proceedings of the 2013 8th International Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2013 (pp. 13-18). [6636787] IEEE Computer Society. https://doi.org/10.4180/icst.crowncom.2013.252021

A practical precoding approach for radar/communications spectrum sharing. / Babaei, Alireza; Tranter, William H.; Bose, Tamal.

Proceedings of the 2013 8th International Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2013. IEEE Computer Society, 2013. p. 13-18 6636787.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Babaei, A, Tranter, WH & Bose, T 2013, A practical precoding approach for radar/communications spectrum sharing. in Proceedings of the 2013 8th International Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2013., 6636787, IEEE Computer Society, pp. 13-18, 2013 8th International Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2013, Washington, DC, United States, 7/8/13. https://doi.org/10.4180/icst.crowncom.2013.252021
Babaei A, Tranter WH, Bose T. A practical precoding approach for radar/communications spectrum sharing. In Proceedings of the 2013 8th International Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2013. IEEE Computer Society. 2013. p. 13-18. 6636787 https://doi.org/10.4180/icst.crowncom.2013.252021
Babaei, Alireza ; Tranter, William H. ; Bose, Tamal. / A practical precoding approach for radar/communications spectrum sharing. Proceedings of the 2013 8th International Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2013. IEEE Computer Society, 2013. pp. 13-18
@inproceedings{3c9fd393864b49a6aca16bb24085bdfd,
title = "A practical precoding approach for radar/communications spectrum sharing",
abstract = "In this paper, we consider spectrum sharing between multiple-input multiple-output (MIMO) radar system and a communication system modeled as MIMO interference channel. We derive a zero-forcing precoder for radar transmitter which completely eliminates the radar interference to communication users. Obtaining the precoder requires the knowledge of an effective interference channel matrix composed of the channel matrices to all of the communication receivers and the postprocessing matrices employed by them. We propose a channel estimation phase in which all of the communication receivers coordinate in their choice of training symbols and power transmission and the radar transmitter can estimate the effective interference channel. We investigate the effect of radar precoder and channel estimation error on the performance of radar and interference to communication receivers. Our results indicate that while the precoder null steers the radar interference to communication users it degrades the radar performance by introducing correlation to the probing signals. We show that this performance loss can be compensated for by increasing the number of radar antennas.",
author = "Alireza Babaei and Tranter, {William H.} and Tamal Bose",
year = "2013",
doi = "10.4180/icst.crowncom.2013.252021",
language = "English (US)",
isbn = "9781479921201",
pages = "13--18",
booktitle = "Proceedings of the 2013 8th International Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2013",
publisher = "IEEE Computer Society",

}

TY - GEN

T1 - A practical precoding approach for radar/communications spectrum sharing

AU - Babaei, Alireza

AU - Tranter, William H.

AU - Bose, Tamal

PY - 2013

Y1 - 2013

N2 - In this paper, we consider spectrum sharing between multiple-input multiple-output (MIMO) radar system and a communication system modeled as MIMO interference channel. We derive a zero-forcing precoder for radar transmitter which completely eliminates the radar interference to communication users. Obtaining the precoder requires the knowledge of an effective interference channel matrix composed of the channel matrices to all of the communication receivers and the postprocessing matrices employed by them. We propose a channel estimation phase in which all of the communication receivers coordinate in their choice of training symbols and power transmission and the radar transmitter can estimate the effective interference channel. We investigate the effect of radar precoder and channel estimation error on the performance of radar and interference to communication receivers. Our results indicate that while the precoder null steers the radar interference to communication users it degrades the radar performance by introducing correlation to the probing signals. We show that this performance loss can be compensated for by increasing the number of radar antennas.

AB - In this paper, we consider spectrum sharing between multiple-input multiple-output (MIMO) radar system and a communication system modeled as MIMO interference channel. We derive a zero-forcing precoder for radar transmitter which completely eliminates the radar interference to communication users. Obtaining the precoder requires the knowledge of an effective interference channel matrix composed of the channel matrices to all of the communication receivers and the postprocessing matrices employed by them. We propose a channel estimation phase in which all of the communication receivers coordinate in their choice of training symbols and power transmission and the radar transmitter can estimate the effective interference channel. We investigate the effect of radar precoder and channel estimation error on the performance of radar and interference to communication receivers. Our results indicate that while the precoder null steers the radar interference to communication users it degrades the radar performance by introducing correlation to the probing signals. We show that this performance loss can be compensated for by increasing the number of radar antennas.

UR - http://www.scopus.com/inward/record.url?scp=84890853839&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84890853839&partnerID=8YFLogxK

U2 - 10.4180/icst.crowncom.2013.252021

DO - 10.4180/icst.crowncom.2013.252021

M3 - Conference contribution

SN - 9781479921201

SP - 13

EP - 18

BT - Proceedings of the 2013 8th International Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2013

PB - IEEE Computer Society

ER -