Low complexity modified constant Log-Map algorithm for radix-4 turbo decoder

Turbo decoding for 3GPP-LTE wireless communication standard is most challenging task to reduce computational complexity. This paper presents 8-state trellis VHDL implementation of radix-2 and radix-4 form. In a practical system, the original MAP algorithm is too complex for implementation. All the b...

Full description

Saved in:
Bibliographic Details
Published in:2015 International Conference on Pervasive Computing (ICPC) pp. 1 - 4
Main Authors: Bahirgonde, Prabhavati D., Dixit, Shantanu K.
Format: Conference Proceeding
Language:English
Published: IEEE 01.01.2015
Subjects:
3GPP-LTE
Approximation algorithms
Approximation methods
Decoding
FPGA
Hardware
LLR
MAX
Measurement
SISO
Table lookup
Turbo codes
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Abstract Turbo decoding for 3GPP-LTE wireless communication standard is most challenging task to reduce computational complexity. This paper presents 8-state trellis VHDL implementation of radix-2 and radix-4 form. In a practical system, the original MAP algorithm is too complex for implementation. All the branch metrics required for calculating LLR values are stored in a RAM. Max* function is implemented with correction factor to improve performance. The proposed, implemented algorithm is almost identical to max* function. With increasing demand for different data rate and services for communication system reconfigurability is important. So implementation is targeted towards Xilinx Virtex E FPGAs. The turbo decoder uses soft in soft out (SISO) decoders to decode one code word.
AbstractList Turbo decoding for 3GPP-LTE wireless communication standard is most challenging task to reduce computational complexity. This paper presents 8-state trellis VHDL implementation of radix-2 and radix-4 form. In a practical system, the original MAP algorithm is too complex for implementation. All the branch metrics required for calculating LLR values are stored in a RAM. Max* function is implemented with correction factor to improve performance. The proposed, implemented algorithm is almost identical to max* function. With increasing demand for different data rate and services for communication system reconfigurability is important. So implementation is targeted towards Xilinx Virtex E FPGAs. The turbo decoder uses soft in soft out (SISO) decoders to decode one code word.
Author Bahirgonde, Prabhavati D.
Dixit, Shantanu K.
Author_xml – sequence: 1
  givenname: Prabhavati D.
  surname: Bahirgonde
  fullname: Bahirgonde, Prabhavati D.
  email: pshirwal@rediffmail.com
  organization: Dept. of Electron. & Telecommun. Eng., Walchand Inst. of Technol., Solapur, India
– sequence: 2
  givenname: Shantanu K.
  surname: Dixit
  fullname: Dixit, Shantanu K.
  email: dixitshantanu1@gmail.com
  organization: Dept. of Electron. & Telecommun. Eng., Walchand Inst. of Technol., Solapur, India
BookMark eNotj8tKAzEUQCPowla_QJD8wIy5ecxjWUrVwojio9uSx00NzEyGNGL79xbs6sBZHDgzcjnGEQm5B1YCsPbhbfW-WXysN6uSM1BlzZoahLogM5B121a85vKadF38pTYOU4-HkI90iC74gO7kxn3WY6Zd3BUveqK638UU8vdAfUw0aRcOhaT5J5lIHdroMN2QK6_7Pd6eOSdfj6vP5XPRvT6tl4uuCMBFLozlkjELLYB0wohWVRraCoRnCNwx5WzlvFHgZA2mMa5REiuU3greGObFnNz9dwMibqcUBp2O2_Og-APAqEuy
ContentType Conference Proceeding
DBID 6IE
6IL
CBEJK
RIE
RIL
DOI 10.1109/PERVASIVE.2015.7087135
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: IEEE Electronic Library (IEL)
  url: https://ieeexplore.ieee.org/
  sourceTypes: Publisher
DeliveryMethod fulltext_linktorsrc
EISBN 1479962724
9781479962723
EndPage 4
ExternalDocumentID 7087135
Genre orig-research
GroupedDBID 6IE
6IL
CBEJK
RIE
RIL
ID FETCH-LOGICAL-i123t-bc2400c19114d3b3956a19613f0e12d05dc6dfb51d471b8bd854e6e4fc328b0f3
IEDL.DBID RIE
IngestDate Thu Jun 29 18:38:13 EDT 2023
IsPeerReviewed false
IsScholarly false
Language English
LinkModel DirectLink
MergedId FETCHMERGED-LOGICAL-i123t-bc2400c19114d3b3956a19613f0e12d05dc6dfb51d471b8bd854e6e4fc328b0f3
PageCount 4
ParticipantIDs ieee_primary_7087135
PublicationCentury 2000
PublicationDate 20150101
PublicationDateYYYYMMDD 2015-01-01
PublicationDate_xml – month: 01
  year: 2015
  text: 20150101
  day: 01
PublicationDecade 2010
PublicationTitle 2015 International Conference on Pervasive Computing (ICPC)
PublicationTitleAbbrev PERVASIVE
PublicationYear 2015
Publisher IEEE
Publisher_xml – name: IEEE
Score 1.5690979
Snippet Turbo decoding for 3GPP-LTE wireless communication standard is most challenging task to reduce computational complexity. This paper presents 8-state trellis...
SourceID ieee
SourceType Publisher
StartPage 1
SubjectTerms 3GPP-LTE
Approximation algorithms
Approximation methods
Decoding
FPGA
Hardware
LLR
MAX
Measurement
SISO
Table lookup
Turbo codes
Title Low complexity modified constant Log-Map algorithm for radix-4 turbo decoder
URI https://ieeexplore.ieee.org/document/7087135
hasFullText 1
inHoldings 1
isFullTextHit
isPrint
link http://cvtisr.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwlV1JSwMxFA5t8eBJpRV3cvBo2lmSycxRpEVhLMWl9FayvNQBO1PGqfbnm0yHiuDFW3gEAi-E73vLl4fQteChYUrGRKuIEepTIAkFQyLKNViGoaCu4E9TPh7Hs1kyaaGbnRYGAOrmM-i7ZV3L14Vau1TZgHuxmyjXRm3Oo61WqxH9-l4ymAyfprfPD9Oha9hi_Wbzr6kpNWiMDv533CHq_ajv8GSHK0eoBXkXpWnxhev-b9hY4oyXhc6MpY_WVhO8CqfFgjyKFRbvi8JG_G9LbPkoLoXONoRiiyyywBqchL3sodfR8OXunjSTEEhmkaUiUrlWT2VjK5_qUIY2qBH26fih8cAPtMesp7WRzNcWa2QsdcwoRECNCoNYeiY8Rp28yOEEYc64ETphAQNGTQLCFV5UHEodCckDdYq6zhPz1fazi3njhLO_zedo3zl7m5O4QJ2qXMMl2lOfVfZRXtU39A32qZTE
linkProvider IEEE
linkToHtml http://cvtisr.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwlV1JSwMxFA61CnpSacXdHDyadpZklqNIS4vTUrSW3kqWFx2wnTJOtT_fZDpUBC_ewiMQeCF831u-PIRueehrJkVElAwYoS4FElPQJKChAsMwJJQV_EkSDofRdBqPauhuq4UBgLL5DFp2WdbyVSZXNlXWDp3ITpTbQbuMUs_ZqLUq2a_rxO1R52ly_9yfdGzLFmtV23_NTSlho3v4vwOPUPNHf4dHW2Q5RjVYNFCSZF-47ACHtaHOeJ6pVBsCaWwlxStwkr2SAV9i_v6amZj_bY4NI8U5V-maUGywRWRYgRWx50300u2MH3qkmoVAUoMtBRHSNntKE125VPnCN2ENN4_H9bUDrqccZnyttGCuMmgjIqEiRiEAqqXvRcLR_gmqL7IFnCIcslBzFTOPAaM6Bm5LLzLyhQq4CD15hhrWE7Pl5ruLWeWE87_NN2i_Nx4ks6Q_fLxAB9bxmwzFJaoX-Qqu0J78LNKP_Lq8rW_jB5gL
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=2015+International+Conference+on+Pervasive+Computing+%28ICPC%29&rft.atitle=Low+complexity+modified+constant+Log-Map+algorithm+for+radix-4+turbo+decoder&rft.au=Bahirgonde%2C+Prabhavati+D.&rft.au=Dixit%2C+Shantanu+K.&rft.date=2015-01-01&rft.pub=IEEE&rft.spage=1&rft.epage=4&rft_id=info:doi/10.1109%2FPERVASIVE.2015.7087135&rft.externalDocID=7087135