Cyclic delay diversity with phase shift in low rate SC-FDMA uplink

Yuka Enjoji; Yukitoshi Sanada

doi:10.1109/ISPACS.2015.7432812

Cyclic delay diversity with phase shift in low rate SC-FDMA uplink

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This paper proposes a phase shift scheme in cyclic delay diversity (CDD) for single-carrier frequency division multiple access (SC-FDMA) in Internet of Things (IoT) applications. The proposed scheme is assumed to be applied to the uplink of Long Term Evolution (LTE) systems. Since the transmission rates of IoT applications are small, each uplink connection may occupy less than 12 subcarriers that corresponds to one resource block (RB) of the LTE. Since the length of the data sequence in time domain is short so that CDD may provide limited frequency diversity. The proposed scheme shifts the phases of the data symbols in time domain and spreads each subcarrier component over multiple subcarriers. Thus, more diversity gain can be realized with CDD. Numerical results obtained through computer simulation shows that the proposed scheme improves the performance by about 5-7 dB at the bit error rate (BER) of 104 for the data sequence length of 4.

Original language	English
Title of host publication	2015 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	441-446
Number of pages	6
ISBN (Print)	9781467364997
DOIs	https://doi.org/10.1109/ISPACS.2015.7432812
Publication status	Published - 2016 Mar 11
Event	International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015 - Nusa Dua, Bali, Indonesia Duration: 2015 Nov 9 → 2015 Nov 12

Other

Other	International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015
Country/Territory	Indonesia
City	Nusa Dua, Bali
Period	15/11/9 → 15/11/12

ASJC Scopus subject areas

Artificial Intelligence
Computer Networks and Communications
Signal Processing

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10.1109/ISPACS.2015.7432812

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Cyclic delay diversity with phase shift in low rate SC-FDMA uplink. / Enjoji, Yuka; Sanada, Yukitoshi.

2015 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015. Institute of Electrical and Electronics Engineers Inc., 2016. p. 441-446 7432812.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Enjoji, Y & Sanada, Y 2016, Cyclic delay diversity with phase shift in low rate SC-FDMA uplink. in 2015 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015., 7432812, Institute of Electrical and Electronics Engineers Inc., pp. 441-446, International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015, Nusa Dua, Bali, Indonesia, 15/11/9. https://doi.org/10.1109/ISPACS.2015.7432812

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abstract = "This paper proposes a phase shift scheme in cyclic delay diversity (CDD) for single-carrier frequency division multiple access (SC-FDMA) in Internet of Things (IoT) applications. The proposed scheme is assumed to be applied to the uplink of Long Term Evolution (LTE) systems. Since the transmission rates of IoT applications are small, each uplink connection may occupy less than 12 subcarriers that corresponds to one resource block (RB) of the LTE. Since the length of the data sequence in time domain is short so that CDD may provide limited frequency diversity. The proposed scheme shifts the phases of the data symbols in time domain and spreads each subcarrier component over multiple subcarriers. Thus, more diversity gain can be realized with CDD. Numerical results obtained through computer simulation shows that the proposed scheme improves the performance by about 5-7 dB at the bit error rate (BER) of 104 for the data sequence length of 4.",

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Cyclic delay diversity with phase shift in low rate SC-FDMA uplink

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