Presentation 2022-03-10
An Initial Acquisition Scheme with Improved Carrier Frequency Offset Tolerance for MWHCDM
Yota Yamamura, Toshiharu Kojima,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) MWHCDM (modified Walsh-Hadamard code division multiplexing) is suitable for helicopter satellite communications, where rotor blades periodically block the transmission channel. However, its initial acquisition performance degrades due to the carrier frequency offset. This report proposes initial acquisition with improved tolerance of carrier frequency offset. The proposed scheme employs parallel processing of frequency-shifted received signals, an enhanced evaluation function, and recursive integration and achieves the expected performance.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Helicopter satellite communications / Walsh-Hadamard code / CDM / Initial acquisition / Carrier frequency offset
Paper # IT2021-97,ISEC2021-62,WBS2021-65,RCC2021-72
Date of Issue 2022-03-03 (IT, ISEC, WBS, RCC)

Conference Information
Committee IT / ISEC / RCC / WBS
Conference Date 2022/3/10(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Online
Topics (in Japanese) (See Japanese page)
Topics (in English) Joint Meeting of ISEC, IT, RCC, and WBS
Chair Tadashi Wadayama(Nagoya Inst. of Tech.) / Tetsuya Izu(Fujitsu Labs.) / HUAN-BANG LI(NICT) / Masanori Hamamura(Kochi Univ. of Tech.)
Vice Chair Tetsuya Kojima(Tokyo Kosen) / Noboru Kunihiro(Tsukuba Univ.) / Goichiro Hanaoka(AIST) / Shunichi Azuma(Nagoya Univ.) / Koji Ishii(Kagawa Univ.) / Takashi Shono(INTEL) / Masahiro Fujii(Utsunomiya Univ.)
Secretary Tetsuya Kojima(Saitamai Univ.) / Noboru Kunihiro(Yamaguchi Univ.) / Goichiro Hanaoka(Fujitsu Labs.) / Shunichi Azuma(Ibaraki Univ.) / Koji Ishii(CRIEPI) / Takashi Shono(Osaka Univ.) / Masahiro Fujii(National Defence Academy)
Assistant Masanori Hirotomo(Saga Univ.) / Takahiro Matsuda(AIST) / SHAN LIN(NICT) / Masaki Ogura(Osaka Univ.) / Masayuki Kinoshita(Chiba Univ. of Tech.) / Sun Ran(Ibaraki Univ.)

Paper Information
Registration To Technical Committee on Information Theory / Technical Committee on Information Security / Technical Committee on Reliable Communication and Control / Technical Committee on Wideband System
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) An Initial Acquisition Scheme with Improved Carrier Frequency Offset Tolerance for MWHCDM
Sub Title (in English)
Keyword(1) Helicopter satellite communications
Keyword(2) Walsh-Hadamard code
Keyword(3) CDM
Keyword(4) Initial acquisition
Keyword(5) Carrier frequency offset
1st Author's Name Yota Yamamura
1st Author's Affiliation The University of Electro-Communications(UEC)
2nd Author's Name Toshiharu Kojima
2nd Author's Affiliation The University of Electro-Communications(UEC)
Date 2022-03-10
Paper # IT2021-97,ISEC2021-62,WBS2021-65,RCC2021-72
Volume (vol) vol.121
Number (no) IT-428,ISEC-429,WBS-430,RCC-431
Page pp.pp.89-94(IT), pp.89-94(ISEC), pp.89-94(WBS), pp.89-94(RCC),
#Pages 6
Date of Issue 2022-03-03 (IT, ISEC, WBS, RCC)