Distributed Differential Space-Time Spreading for the Asynchronous Relay Aided Interference-Free Cooperative CDMA Uplink

In this paper, we propose a differential Space-Time Coding (STC) scheme designed for asynchronous cooperative networks, where neither channel estimation nor symbol-level synchronization is required at the cooperating nodes. More specifically, our system employs differential encoding during the broad...

Celý popis

Uloženo v:
Podrobná bibliografie
Vydáno v:2010 IEEE International Conference on Communications s. 1 - 5
Hlavní autoři: Sugiura, S, Chen, S, Hanzo, L
Médium: Konferenční příspěvek
Jazyk:angličtina
Vydáno: IEEE 01.05.2010
Témata:
Autocorrelation
Broadcasting
Channel estimation
Degradation
Detectors
Frequency synchronization
Interference elimination
Multiaccess communication
Potential well
Relays
ISBN:1424464021, 9781424464029
ISSN:1550-3607
On-line přístup:Získat plný text
Tagy: Přidat tag
Žádné tagy, Buďte první, kdo vytvoří štítek k tomuto záznamu!
Abstract In this paper, we propose a differential Space-Time Coding (STC) scheme designed for asynchronous cooperative networks, where neither channel estimation nor symbol-level synchronization is required at the cooperating nodes. More specifically, our system employs differential encoding during the broadcast phase and a Space-Time Spreading (STS)-based amplify-and-forward scheme during the cooperative phase in conjunction with interference rejection Direct Sequence (DS) spreading codes, namely Loosely Synchronized (LS) codes. The LS codes exhibit a so-called Interference Free Window (IFW), where both the autocorrelation and cross-correlation values of the codes become zero. The IFW allows us to eliminate both the Multi-User Interference (MUI) as well as the potential dispersion-induced orthogonality degradation of the cooperative space-time codeword and the interference imposed by the asynchronous transmissions of the relay nodes. Furthermore, the destination node can beneficially combine both the directly transmitted and the relayed symbols using low-complexity correlation operations combined with a hard-decision detector. Our simulation results demonstrate that the proposed Cooperative Differential STS (CDSTS) scheme is capable of combating the effects of asynchronous uplink transmissions without any Channel State Information (CSI), provided that the maximum synchronization delay of the relay nodes is within the width of IFW. It will be demonstrated that in the frequency-selective environment considered our CDSTS arrangement is capable of exploiting both space-time diversity and multi-path diversity with the aid of a RAKE combiner.
AbstractList In this paper, we propose a differential Space-Time Coding (STC) scheme designed for asynchronous cooperative networks, where neither channel estimation nor symbol-level synchronization is required at the cooperating nodes. More specifically, our system employs differential encoding during the broadcast phase and a Space-Time Spreading (STS)-based amplify-and-forward scheme during the cooperative phase in conjunction with interference rejection Direct Sequence (DS) spreading codes, namely Loosely Synchronized (LS) codes. The LS codes exhibit a so-called Interference Free Window (IFW), where both the autocorrelation and cross-correlation values of the codes become zero. The IFW allows us to eliminate both the Multi-User Interference (MUI) as well as the potential dispersion-induced orthogonality degradation of the cooperative space-time codeword and the interference imposed by the asynchronous transmissions of the relay nodes. Furthermore, the destination node can beneficially combine both the directly transmitted and the relayed symbols using low-complexity correlation operations combined with a hard-decision detector. Our simulation results demonstrate that the proposed Cooperative Differential STS (CDSTS) scheme is capable of combating the effects of asynchronous uplink transmissions without any Channel State Information (CSI), provided that the maximum synchronization delay of the relay nodes is within the width of IFW. It will be demonstrated that in the frequency-selective environment considered our CDSTS arrangement is capable of exploiting both space-time diversity and multi-path diversity with the aid of a RAKE combiner.
Author Sugiura, S
Chen, S
Hanzo, L
Author_xml – sequence: 1
  givenname: S
  surname: Sugiura
  fullname: Sugiura, S
  email: ss07r@ecs.soton.ac
  organization: Sch. of ECS, Univ. of Southampton, Southampton, UK
– sequence: 2
  givenname: S
  surname: Chen
  fullname: Chen, S
  email: sqc@ecs.soton.ac
  organization: Sch. of ECS, Univ. of Southampton, Southampton, UK
– sequence: 3
  givenname: L
  surname: Hanzo
  fullname: Hanzo, L
  email: lh@ecs.soton.ac
  organization: Sch. of ECS, Univ. of Southampton, Southampton, UK
BookMark eNpFkF9LwzAUxSNu4DZ9F3zJF-hMmj9dHkvndDARdAPfRprcumiXljQb7ttbdODTOQfO_XE5YzTwjQeEbimZUkrU_bIopinpkxAkJUpeoDHlKeeSE_Z--R9SOkAj2pcSJkk2RKMZTSRXgmdXaNx1n4SIVDE6Qt9z18XgykMEi-euqiCAj07X-K3VBpK120NvA2jr_AeumoDjDnDenbzZhcY3hw6_Qq1POHe2Ryx9hPAL6Y8XAQAXTdNC0NEdez9_zvGmrZ3_ukbDStcd3Jx1gjaLh3XxlKxeHpdFvkoczURMVEpkahRwZinrfwbFZGZtpTOwpQRTKVMqIag0oIUQkgEjJoOynIGwTEs2QXd_XAcA2za4vQ6n7Xk-9gNpAmMU
ContentType Conference Proceeding
DBID 6IE
6IH
CBEJK
RIE
RIO
DOI 10.1109/ICC.2010.5502096
DatabaseName IEEE Electronic Library (IEL) Conference Proceedings
IEEE Proceedings Order Plan (POP) 1998-present by volume
IEEE Xplore All Conference Proceedings
IEEE/IET Electronic Library (IEL) (UW System Shared)
IEEE Proceedings Order Plans (POP) 1998-present
DatabaseTitleList
Database_xml – sequence: 1
  dbid: RIE
  name: IEEE/IET Electronic Library (IEL) (UW System Shared)
  url: https://ieeexplore.ieee.org/
  sourceTypes: Publisher
DeliveryMethod fulltext_linktorsrc
Discipline Engineering
EISBN 142446403X
9781424464043
1424464048
9781424464036
EndPage 5
ExternalDocumentID 5502096
Genre orig-research
GroupedDBID 29F
29I
6IE
6IF
6IH
6IK
6IL
6IM
6IN
AAJGR
AAWTH
ABLEC
ACGFS
ADZIZ
ALMA_UNASSIGNED_HOLDINGS
BEFXN
BFFAM
BGNUA
BKEBE
BPEOZ
CBEJK
CHZPO
IEGSK
IJVOP
IPLJI
M43
OCL
RIE
RIL
RIO
ID FETCH-LOGICAL-i175t-92062c9e43d13529e9367ddfa7edb6ecf9cb95516cea55563e30c7ebb8e5d3a63
IEDL.DBID RIE
ISBN 1424464021
9781424464029
ISICitedReferencesCount 1
ISICitedReferencesURI http://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=Summon&SrcAuth=ProQuest&DestLinkType=CitingArticles&DestApp=WOS_CPL&KeyUT=000290335601013&url=https%3A%2F%2Fcvtisr.summon.serialssolutions.com%2F%23%21%2Fsearch%3Fho%3Df%26include.ft.matches%3Dt%26l%3Dnull%26q%3D
ISSN 1550-3607
IngestDate Wed Aug 27 02:43:11 EDT 2025
IsPeerReviewed false
IsScholarly true
LCCN 81-649547
Language English
LinkModel DirectLink
MergedId FETCHMERGED-LOGICAL-i175t-92062c9e43d13529e9367ddfa7edb6ecf9cb95516cea55563e30c7ebb8e5d3a63
PageCount 5
ParticipantIDs ieee_primary_5502096
PublicationCentury 2000
PublicationDate 2010-May
PublicationDateYYYYMMDD 2010-05-01
PublicationDate_xml – month: 05
  year: 2010
  text: 2010-May
PublicationDecade 2010
PublicationTitle 2010 IEEE International Conference on Communications
PublicationTitleAbbrev ICC
PublicationYear 2010
Publisher IEEE
Publisher_xml – name: IEEE
SSID ssj0052931
ssj0000452692
Score 1.738867
Snippet In this paper, we propose a differential Space-Time Coding (STC) scheme designed for asynchronous cooperative networks, where neither channel estimation nor...
SourceID ieee
SourceType Publisher
StartPage 1
SubjectTerms Autocorrelation
Broadcasting
Channel estimation
Degradation
Detectors
Frequency synchronization
Interference elimination
Multiaccess communication
Potential well
Relays
Title Distributed Differential Space-Time Spreading for the Asynchronous Relay Aided Interference-Free Cooperative CDMA Uplink
URI https://ieeexplore.ieee.org/document/5502096
WOSCitedRecordID wos000290335601013&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/eLvHCXMwlV3JTsMwELXaigNcWFrELh84Yprd8bFKqUCCqhIU9VY59kSqQEmVtoj-PeNsgMSFm5NDHDnLPM_Me4-Qa82l5avEZiHCCeZJV7BYJsBU7AZc81A7heLN6yMfj8PZTExa5KbhwgBA0XwGt2ZY1PJ1pjYmVdZHNO0g5G6TNudBydVq8ilW4ZXdSEf5GMZKrVQf_zOBxWtSV4AbJrvWeqqORV2_tET_IYrKhq9qsl-uK0XQGe3_73YPSO-bvUcnTVw6JC1Ij8jeD-HBLvkcGr1cY3UFmg4rjxT81t_pM-6hgRliCA7zssOeIrClCBTpYLVNlVHTzTYratrotnSw0HiJIq9Yzc1GOQCNsmwJpao4jYZPAzo11N-3HpmO7l6ie1Z5MLAFAos1E44VOEqA52obsZoAYZ6hTiQHHQegEqFiYYptCqRvxMbAtRSHOA7B164M3GPSSbMUTgjlng-KKwcQUnrgqBiRp0hC6XqhARX8lHTNGs6XpczGvFq-s79Pn5PdupBv2Reks843cEl21Md6scqvinfjC0Mms_M
linkProvider IEEE
linkToHtml http://cvtisr.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwlV1bT8IwFG4QTdQXL2C82wcfrXTXro9kSCACIREMb2RrzxKi2cgAI__edjc18cW3bg_r0l3O13PO930I3UsWUEdEBvEUnCB2YHESBhEQEVouk8yTZqZ48zpgo5E3m_FxDT1UXBgAyJrP4FEPs1q-TMRGp8paCk2bCnLvoF3Htk2as7WqjArN3LIr8ShHBbJcLdVRfxqXspLW5aotk1GqPRXHvKxgUt7q-37e8lVM98t3JQs73aP_3fAxan7z9_C4ikwnqAbxKTr8IT3YQJ8drZirza5A4k7hkqK-9nf8onbRQDQ1RA3TvMceK2iLFVTE7dU2FlpPN9mssG6k2-L2QqpLZJnFYm7STQGwnyRLyHXFsd8ZtvFUk3_fmmjafZr4PVK4MJCFghZrwk3qmoKDbUlDoTUOXD9FGQUMZOiCiLgIuS63CQgcLTcGFhUMwtADR1qBa52hepzEcI4wsx0QTJigQKUNpggV9uSRF1i2p2EFu0ANvYbzZS60MS-W7_Lv03dovzcZDuaD_uj5Ch2UZX1qXKP6Ot3ADdoTH-vFKr3N3pMv0f23Og
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=2010+IEEE+International+Conference+on+Communications&rft.atitle=Distributed+Differential+Space-Time+Spreading+for+the+Asynchronous+Relay+Aided+Interference-Free+Cooperative+CDMA+Uplink&rft.au=Sugiura%2C+S&rft.au=Chen%2C+S&rft.au=Hanzo%2C+L&rft.date=2010-05-01&rft.pub=IEEE&rft.isbn=9781424464029&rft.issn=1550-3607&rft.spage=1&rft.epage=5&rft_id=info:doi/10.1109%2FICC.2010.5502096&rft.externalDocID=5502096
thumbnail_l http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/lc.gif&issn=1550-3607&client=summon
thumbnail_m http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/mc.gif&issn=1550-3607&client=summon
thumbnail_s http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/sc.gif&issn=1550-3607&client=summon