Dual-Hop Cooperative Transmission for Orthogonal Frequency and Code Division Multiple Access

Jung-In BAIK; Sung-Jin KANG; Hyoung-Kyu SONG

doi:10.1587/transcom.E95.B.2995

Dual-Hop Cooperative Transmission for Orthogonal Frequency and Code Division Multiple Access

Jung-In BAIK, Sung-Jin KANG, Hyoung-Kyu SONG

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Orthogonal frequency and code division multiplexing (OFCDM) is available as orthogonal frequency and code division multiple access (OFCDMA) by allocating subcarrier to users. OFCDMA is an efficient transmission method assigning the subcarrier and the channel code according to channel state or many different environments. However, OFCDMA is hard to apply many frequency spreading codes when it is compared with OFCDM because of the restrictive subcarriers. This problem leads to decrease the frequency diversity. Therefore we propose system that combines cyclic delay diversity (CDD) with cooperative relaying system based on OFCDMA. This system complements this restrict by spatial diversity. In addition to that, the proposed system obtains diversity gain without loss of the throughput when direct-path condition is not good.

Publication: IEICE TRANSACTIONS on Communications Vol.E95-B No.9 pp.2995-2998

Publication Date: 2012/09/01

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Online ISSN: 1745-1345

DOI: 10.1587/transcom.E95.B.2995

Type of Manuscript: LETTER

Category: Wireless Communication Technologies

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Jung-In BAIK, Sung-Jin KANG, Hyoung-Kyu SONG, "Dual-Hop Cooperative Transmission for Orthogonal Frequency and Code Division Multiple Access" in IEICE TRANSACTIONS on Communications, vol. E95-B, no. 9, pp. 2995-2998, September 2012, doi: 10.1587/transcom.E95.B.2995.
Abstract: Orthogonal frequency and code division multiplexing (OFCDM) is available as orthogonal frequency and code division multiple access (OFCDMA) by allocating subcarrier to users. OFCDMA is an efficient transmission method assigning the subcarrier and the channel code according to channel state or many different environments. However, OFCDMA is hard to apply many frequency spreading codes when it is compared with OFCDM because of the restrictive subcarriers. This problem leads to decrease the frequency diversity. Therefore we propose system that combines cyclic delay diversity (CDD) with cooperative relaying system based on OFCDMA. This system complements this restrict by spatial diversity. In addition to that, the proposed system obtains diversity gain without loss of the throughput when direct-path condition is not good.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/transcom.E95.B.2995/_p

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@ARTICLE{e95-b_9_2995,
author={Jung-In BAIK, Sung-Jin KANG, Hyoung-Kyu SONG, },
journal={IEICE TRANSACTIONS on Communications},
title={Dual-Hop Cooperative Transmission for Orthogonal Frequency and Code Division Multiple Access},
year={2012},
volume={E95-B},
number={9},
pages={2995-2998},
abstract={Orthogonal frequency and code division multiplexing (OFCDM) is available as orthogonal frequency and code division multiple access (OFCDMA) by allocating subcarrier to users. OFCDMA is an efficient transmission method assigning the subcarrier and the channel code according to channel state or many different environments. However, OFCDMA is hard to apply many frequency spreading codes when it is compared with OFCDM because of the restrictive subcarriers. This problem leads to decrease the frequency diversity. Therefore we propose system that combines cyclic delay diversity (CDD) with cooperative relaying system based on OFCDMA. This system complements this restrict by spatial diversity. In addition to that, the proposed system obtains diversity gain without loss of the throughput when direct-path condition is not good.},
keywords={},
doi={10.1587/transcom.E95.B.2995},
ISSN={1745-1345},
month={September},}

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TY - JOUR
TI - Dual-Hop Cooperative Transmission for Orthogonal Frequency and Code Division Multiple Access
T2 - IEICE TRANSACTIONS on Communications
SP - 2995
EP - 2998
AU - Jung-In BAIK
AU - Sung-Jin KANG
AU - Hyoung-Kyu SONG
PY - 2012
DO - 10.1587/transcom.E95.B.2995
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E95-B
IS - 9
JA - IEICE TRANSACTIONS on Communications
Y1 - September 2012
AB - Orthogonal frequency and code division multiplexing (OFCDM) is available as orthogonal frequency and code division multiple access (OFCDMA) by allocating subcarrier to users. OFCDMA is an efficient transmission method assigning the subcarrier and the channel code according to channel state or many different environments. However, OFCDMA is hard to apply many frequency spreading codes when it is compared with OFCDM because of the restrictive subcarriers. This problem leads to decrease the frequency diversity. Therefore we propose system that combines cyclic delay diversity (CDD) with cooperative relaying system based on OFCDMA. This system complements this restrict by spatial diversity. In addition to that, the proposed system obtains diversity gain without loss of the throughput when direct-path condition is not good.
ER -