RSMA-Based Bistatic ISAC Framework for LEO Satellite Systems

To provide ubiquitous global connectivity and target detection on the same platform, a low Earth orbit (LEO) satellite system simultaneously performing communication and radar tasks has drawn significant attention. However, the design of such a joint system should address the challenges of limited p...

Full description

Saved in:
Bibliographic Details
Published in:IEEE International Conference on Communications workshops pp. 1840 - 1845
Main Authors: Park, Juha, Seong, Jaehyup, Ryu, Jaehak, Mao, Yijie, Shin, Wonjae
Format: Conference Proceeding
Language:English
Published: IEEE 09.06.2024
Subjects:
Conferences
Integrated sensing and communication
Integrated sensing and communications (ISAC)
Interference
low Earth orbit (LEO) satellite
Low earth orbit satellites
precoder optimization
rate-splitting multiple access (RSMA)
Satellites
Spaceborne radar
System performance
ISSN:2694-2941
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Abstract To provide ubiquitous global connectivity and target detection on the same platform, a low Earth orbit (LEO) satellite system simultaneously performing communication and radar tasks has drawn significant attention. However, the design of such a joint system should address the challenges of limited power resources on satellites and inter-/intra-function interference. In this paper, we put forth a novel LEO satellite-based bistatic integrated sensing and communication (ISAC) framework that can overcome severe echo path loss by introducing a radar receiver separated from the satellite, thus reducing the satellite's power consumption burden. To effectively manage inter-/intra-function interference, which is a critical factor that can deteriorate system performance, we employ rate-splitting multiple access (RSMA). In RSMA, each user's message is split and encoded into individual private and common streams. We jointly optimize power and beamforming design for the dual-functional signal based on the rate-splitting approach. Numerical results show that the proposed framework enables superior interference control capability and significantly reduces echo path loss compared to several benchmarks. Furthermore, it is validated that the common stream serves three key roles: i) forming a beam towards the radar target, ii) controlling interference between radar and communication functions, and iii) managing interference among communication users. By doing so, efficient joint operation is achieved even without a dedicated radar signal, thanks to the multi-functionality of the common streams under limited spectral and hardware resources.
AbstractList To provide ubiquitous global connectivity and target detection on the same platform, a low Earth orbit (LEO) satellite system simultaneously performing communication and radar tasks has drawn significant attention. However, the design of such a joint system should address the challenges of limited power resources on satellites and inter-/intra-function interference. In this paper, we put forth a novel LEO satellite-based bistatic integrated sensing and communication (ISAC) framework that can overcome severe echo path loss by introducing a radar receiver separated from the satellite, thus reducing the satellite's power consumption burden. To effectively manage inter-/intra-function interference, which is a critical factor that can deteriorate system performance, we employ rate-splitting multiple access (RSMA). In RSMA, each user's message is split and encoded into individual private and common streams. We jointly optimize power and beamforming design for the dual-functional signal based on the rate-splitting approach. Numerical results show that the proposed framework enables superior interference control capability and significantly reduces echo path loss compared to several benchmarks. Furthermore, it is validated that the common stream serves three key roles: i) forming a beam towards the radar target, ii) controlling interference between radar and communication functions, and iii) managing interference among communication users. By doing so, efficient joint operation is achieved even without a dedicated radar signal, thanks to the multi-functionality of the common streams under limited spectral and hardware resources.
Author Ryu, Jaehak
Mao, Yijie
Seong, Jaehyup
Shin, Wonjae
Park, Juha
Author_xml – sequence: 1
  givenname: Juha
  surname: Park
  fullname: Park, Juha
  email: juha@korea.ac.kr
  organization: School of Electrical Engineering, Korea University,Seoul,South Korea
– sequence: 2
  givenname: Jaehyup
  surname: Seong
  fullname: Seong, Jaehyup
  email: jaehyup@korea.ac.kr
  organization: School of Electrical Engineering, Korea University,Seoul,South Korea
– sequence: 3
  givenname: Jaehak
  surname: Ryu
  fullname: Ryu, Jaehak
  email: jaehak99@korea.ac.kr
  organization: School of Electrical Engineering, Korea University,Seoul,South Korea
– sequence: 4
  givenname: Yijie
  surname: Mao
  fullname: Mao, Yijie
  email: maoyj@shanghaitech.edu.cn
  organization: School of Information Science and Technology, ShanghaiTech University,China
– sequence: 5
  givenname: Wonjae
  surname: Shin
  fullname: Shin, Wonjae
  email: wjshin@korea.ac.kr
  organization: School of Electrical Engineering, Korea University,Seoul,South Korea
BookMark eNo1j0FLwzAYhqMoOGf_gYfcPLV-SZM0AS9d2bRQGVjF40ibr1hd19EEZP_egnp6b8_7PNfk4jAekJA7BgljYO7Longfpy__MR69NFKyhAMXCQPFpJTqjEQmMzqVkIIAmZ6TBVdGxNwIdkUi7z8BIGVaayUW5OGlfs7jlfXo6Kr3wYa-pWWdF3Qz2QG_5yPajROt1lta24D7fR-Q1icfcPA35LKze4_R3y7J22b9WjzF1faxLPIq7lmmQtxgptDZVoPjmctA804CaGlVY3D2aJ02FlHYTjmLbq5RDIWZhTm6Rqh0SW5_uT0i7o5TP9jptPsPTn8AdcBOQw
ContentType Conference Proceeding
DBID 6IE
6IL
CBEJK
RIE
RIL
DOI 10.1109/ICCWorkshops59551.2024.10615556
DatabaseName IEEE Electronic Library (IEL) Conference Proceedings
IEEE Xplore POP ALL
IEEE Xplore All Conference Proceedings
IEEE Electronic Library (IEL)
IEEE Proceedings Order Plans (POP All) 1998-Present
DatabaseTitleList
Database_xml – sequence: 1
  dbid: RIE
  name: IEL
  url: https://ieeexplore.ieee.org/
  sourceTypes: Publisher
DeliveryMethod fulltext_linktorsrc
Discipline Engineering
EISBN 9798350304053
EISSN 2694-2941
EndPage 1845
ExternalDocumentID 10615556
Genre orig-research
GrantInformation_xml – fundername: National Research Foundation of Korea (NRF)
  grantid: 2022R1A2C4002065
  funderid: 10.13039/501100003725
GroupedDBID 6IE
6IF
6IH
6IK
6IL
6IN
AAJGR
AAWTH
ABLEC
ADZIZ
ALMA_UNASSIGNED_HOLDINGS
BEFXN
BFFAM
BGNUA
BKEBE
BPEOZ
CBEJK
CHZPO
IEGSK
IPLJI
OCL
RIE
RIL
ID FETCH-LOGICAL-i176t-be76edac80d27d7082f50085a6b9e888cd89aee4af6daed20261e492942edb463
IEDL.DBID RIE
ISICitedReferencesCount 2
ISICitedReferencesURI http://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=Summon&SrcAuth=ProQuest&DestLinkType=CitingArticles&DestApp=WOS_CPL&KeyUT=001296276700305&url=https%3A%2F%2Fcvtisr.summon.serialssolutions.com%2F%23%21%2Fsearch%3Fho%3Df%26include.ft.matches%3Dt%26l%3Dnull%26q%3D
IngestDate Wed Aug 27 02:29:56 EDT 2025
IsPeerReviewed false
IsScholarly false
Language English
LinkModel DirectLink
MergedId FETCHMERGED-LOGICAL-i176t-be76edac80d27d7082f50085a6b9e888cd89aee4af6daed20261e492942edb463
PageCount 6
ParticipantIDs ieee_primary_10615556
PublicationCentury 2000
PublicationDate 2024-June-9
PublicationDateYYYYMMDD 2024-06-09
PublicationDate_xml – month: 06
  year: 2024
  text: 2024-June-9
  day: 09
PublicationDecade 2020
PublicationTitle IEEE International Conference on Communications workshops
PublicationTitleAbbrev ICCWORKSHOPS
PublicationYear 2024
Publisher IEEE
Publisher_xml – name: IEEE
SSID ssj0003188864
Score 1.8876946
Snippet To provide ubiquitous global connectivity and target detection on the same platform, a low Earth orbit (LEO) satellite system simultaneously performing...
SourceID ieee
SourceType Publisher
StartPage 1840
SubjectTerms Conferences
Integrated sensing and communication
Integrated sensing and communications (ISAC)
Interference
low Earth orbit (LEO) satellite
Low earth orbit satellites
precoder optimization
rate-splitting multiple access (RSMA)
Satellites
Spaceborne radar
System performance
Title RSMA-Based Bistatic ISAC Framework for LEO Satellite Systems
URI https://ieeexplore.ieee.org/document/10615556
WOSCitedRecordID wos001296276700305&url=https%3A%2F%2Fcvtisr.summon.serialssolutions.com%2F%23%21%2Fsearch%3Fho%3Df%26include.ft.matches%3Dt%26l%3Dnull%26q%3D
hasFullText 1
inHoldings 1
isFullTextHit
isPrint
link http://cvtisr.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwlV1NTwIxEJ0oMUYvfmH8Tg8mngrsbrfdTbzABiIJIhFNuJHudjZyAQKLv99pWVAPHrw1e2g206bvvenMK8C9ESjpyDM8kh5yoXJ7v6slV408j1GZVGhnmd9T_X40GsWDslnd9cIgois-w5odurt8M8tWNlVWt_IlDEO5C7tKqXWz1jahQpsziqTYh4fSR7PeTRKbcV5-zObLMCZqQHLQF7XNLL_eU3Fw0jn6548cQ_W7MY8NtpBzAjs4PYXDH56CZ_D4Onxu8haBk2EtSw5pZ7DusJmwzqYOixFRZb32Cxtq58dZICuNy6vw3mm_JU-8fCKBTzwlC56ikmh0FjWMr4wiPM9Dy6K0TGOkeGQmijWi0Lk0Go1vFRcKokTCR1oHGZxDZTqb4gUwmSo_C7wgzDwj4oiERkb0UAeGEDwgXXQJVRuI8XztgjHexODqj-_XcGDD7cqq4huoFIsV3sJe9llMlos7t3ZfE5eYrw
linkProvider IEEE
linkToHtml http://cvtisr.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwlV3PT8IwFH5RNP64-Avjb3sw8TRkW9duiRdYIBAHEsGEG-nat8gFCAz_ftsyUA8evDU7NMtr0-_7Xt_7CvCgKDJ95CknZC46lGfmflcwh1ezLEKuUiqsZX7Cu91wOIx6RbO67YVBRFt8hhUztHf5aiqXJlX2ZORLEARsG3YCSj131a61Sano7RmGjO7BY-Gk-dSOY5NzXnxMZ4sg0uRAC0KPVtbz_HpRxQJK8-ifv3IM5e_WPNLbgM4JbOHkFA5_uAqewfNbv1Nz6hqeFKkbeqj3Bmn3azFpriuxiKaqJGm8kr6wjpw5ksK6vAzvzcYgbjnFIwnO2OUsd1LkDJWQYVV5XHGN6FlgeJRgaYQ6HlKFkUCkImNKoPKM5kKqSRH1UK8E88-hNJlO8AIIS7knfdcPpKtoFGqpITVBFL7SGO5rZXQJZROI0WzlgzFax-Dqj-_3sN8adJJR0u6-XMOBCb0tsopuoJTPl3gLu_IzHy_md3YdvwA33Zv2
openUrl ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=proceeding&rft.title=IEEE+International+Conference+on+Communications+workshops&rft.atitle=RSMA-Based+Bistatic+ISAC+Framework+for+LEO+Satellite+Systems&rft.au=Park%2C+Juha&rft.au=Seong%2C+Jaehyup&rft.au=Ryu%2C+Jaehak&rft.au=Mao%2C+Yijie&rft.date=2024-06-09&rft.pub=IEEE&rft.eissn=2694-2941&rft.spage=1840&rft.epage=1845&rft_id=info:doi/10.1109%2FICCWorkshops59551.2024.10615556&rft.externalDocID=10615556