Iterative Decoders for FTN-based NOMA Scheme to Multiplex Sporadic and Broadband Transmission

Ameha T. Abebe; Chung Gu Kang

doi:10.1109/ICTC.2018.8539454

Iterative Decoders for FTN-based NOMA Scheme to Multiplex Sporadic and Broadband Transmission

Ameha T. Abebe, Chung Gu Kang

School of Electrical Engineering

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

3 Citations (Scopus)

Abstract

The concept of faster-than Nyquist transmission (FTN) is employed in [1] as a non-orthogonal multiple access scheme to multiplex a sporadic and broadband uplink transmissions so that radio resources can be efficiently shared beyond the Nyquist rate by both traffic types. A broadband user, transmitting in multiple-input multiple-output (MIMO) mode, turns off some of the transmit antennas on few subcarriers to allow sporadic traffic users to use the radio resources. Turning off some transmit antennas on a set of subcarriers from a broadband transmission marginally penalize the broadband transmission in terms of bit-error rate (BER). Frequency-domain linear minimum mean squared error (LMMSE) turbo equalization is shown to have a decent performance in terms of BER. In this paper, we investigate a belief propagation algorithm namely the generalized approximate message passing (GAMP) algorithm and its performance in the FTN-based NOMA setting. For example, we have shown that while employing GAMP-based equalization, turning-off 2 out of 8 antennas from 32 subcarriers of a 256 block length broadband transmission costs only 0.1dB transmit power per bit as compared to 0.3dB for linear MMSE-based equalizer.

Original language	English
Title of host publication	9th International Conference on Information and Communication Technology Convergence
Subtitle of host publication	ICT Convergence Powered by Smart Intelligence, ICTC 2018
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	813-817
Number of pages	5
ISBN (Electronic)	9781538650400
DOIs	https://doi.org/10.1109/ICTC.2018.8539454
Publication status	Published - 2018 Nov 16
Event	9th International Conference on Information and Communication Technology Convergence, ICTC 2018 - Jeju Island, Korea, Republic of Duration: 2018 Oct 17 → 2018 Oct 19

Other

Other	9th International Conference on Information and Communication Technology Convergence, ICTC 2018
Country/Territory	Korea, Republic of
City	Jeju Island
Period	18/10/17 → 18/10/19

Keywords

Coexistance
Faster-than-nyquist
Machine-type Communication
MIMO
NOMA
Single Carrier (SC)

ASJC Scopus subject areas

Computer Networks and Communications
Computer Science Applications
Information Systems
Information Systems and Management
Artificial Intelligence

Access to Document

10.1109/ICTC.2018.8539454

Cite this

Abebe, A. T., & Kang, C. G. (2018). Iterative Decoders for FTN-based NOMA Scheme to Multiplex Sporadic and Broadband Transmission. In 9th International Conference on Information and Communication Technology Convergence: ICT Convergence Powered by Smart Intelligence, ICTC 2018 (pp. 813-817). Article 8539454 Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICTC.2018.8539454

Iterative Decoders for FTN-based NOMA Scheme to Multiplex Sporadic and Broadband Transmission. / Abebe, Ameha T.; Kang, Chung Gu.
9th International Conference on Information and Communication Technology Convergence: ICT Convergence Powered by Smart Intelligence, ICTC 2018. Institute of Electrical and Electronics Engineers Inc., 2018. p. 813-817 8539454.

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

Abebe, AT & Kang, CG 2018, Iterative Decoders for FTN-based NOMA Scheme to Multiplex Sporadic and Broadband Transmission. in 9th International Conference on Information and Communication Technology Convergence: ICT Convergence Powered by Smart Intelligence, ICTC 2018., 8539454, Institute of Electrical and Electronics Engineers Inc., pp. 813-817, 9th International Conference on Information and Communication Technology Convergence, ICTC 2018, Jeju Island, Korea, Republic of, 18/10/17. https://doi.org/10.1109/ICTC.2018.8539454

Abebe AT, Kang CG. Iterative Decoders for FTN-based NOMA Scheme to Multiplex Sporadic and Broadband Transmission. In 9th International Conference on Information and Communication Technology Convergence: ICT Convergence Powered by Smart Intelligence, ICTC 2018. Institute of Electrical and Electronics Engineers Inc. 2018. p. 813-817. 8539454 doi: 10.1109/ICTC.2018.8539454

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AB - The concept of faster-than Nyquist transmission (FTN) is employed in [1] as a non-orthogonal multiple access scheme to multiplex a sporadic and broadband uplink transmissions so that radio resources can be efficiently shared beyond the Nyquist rate by both traffic types. A broadband user, transmitting in multiple-input multiple-output (MIMO) mode, turns off some of the transmit antennas on few subcarriers to allow sporadic traffic users to use the radio resources. Turning off some transmit antennas on a set of subcarriers from a broadband transmission marginally penalize the broadband transmission in terms of bit-error rate (BER). Frequency-domain linear minimum mean squared error (LMMSE) turbo equalization is shown to have a decent performance in terms of BER. In this paper, we investigate a belief propagation algorithm namely the generalized approximate message passing (GAMP) algorithm and its performance in the FTN-based NOMA setting. For example, we have shown that while employing GAMP-based equalization, turning-off 2 out of 8 antennas from 32 subcarriers of a 256 block length broadband transmission costs only 0.1dB transmit power per bit as compared to 0.3dB for linear MMSE-based equalizer.

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Iterative Decoders for FTN-based NOMA Scheme to Multiplex Sporadic and Broadband Transmission

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Keywords

ASJC Scopus subject areas

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