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Comparison of OTFS and OFDM in Ray Launched sub-6 GHz and mmWave Line-of-Sight Mobility Channels

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Comparison of OTFS and OFDM in Ray Launched sub-6 GHz and mmWave Line-of-Sight Mobility Channels. / Wiffen, Fred; Sayer, Lawrence; Bocus, Zubeir; Doufexi, Angela; Nix, Andrew.

2018 IEEE 29th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC 2018). Institute of Electrical and Electronics Engineers (IEEE), 2018. p. 73-79.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Harvard

Wiffen, F, Sayer, L, Bocus, Z, Doufexi, A & Nix, A 2018, Comparison of OTFS and OFDM in Ray Launched sub-6 GHz and mmWave Line-of-Sight Mobility Channels. in 2018 IEEE 29th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC 2018). Institute of Electrical and Electronics Engineers (IEEE), pp. 73-79. https://doi.org/10.1109/PIMRC.2018.8580850

APA

Wiffen, F., Sayer, L., Bocus, Z., Doufexi, A., & Nix, A. (2018). Comparison of OTFS and OFDM in Ray Launched sub-6 GHz and mmWave Line-of-Sight Mobility Channels. In 2018 IEEE 29th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC 2018) (pp. 73-79). Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/PIMRC.2018.8580850

Vancouver

Wiffen F, Sayer L, Bocus Z, Doufexi A, Nix A. Comparison of OTFS and OFDM in Ray Launched sub-6 GHz and mmWave Line-of-Sight Mobility Channels. In 2018 IEEE 29th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC 2018). Institute of Electrical and Electronics Engineers (IEEE). 2018. p. 73-79 https://doi.org/10.1109/PIMRC.2018.8580850

Author

Wiffen, Fred ; Sayer, Lawrence ; Bocus, Zubeir ; Doufexi, Angela ; Nix, Andrew. / Comparison of OTFS and OFDM in Ray Launched sub-6 GHz and mmWave Line-of-Sight Mobility Channels. 2018 IEEE 29th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC 2018). Institute of Electrical and Electronics Engineers (IEEE), 2018. pp. 73-79

Bibtex

@inproceedings{d186468d314740e481506baa8bcdb3c5,
title = "Comparison of OTFS and OFDM in Ray Launched sub-6 GHz and mmWave Line-of-Sight Mobility Channels",
abstract = "Orthogonal Time Frequency Space (OTFS) is a recently proposed modulation scheme for doublydispersive channels in which symbol multiplexing and processing is performed in the Doppler-delay domain, rather than conventional time-frequency domain. In this paper, the performance of OTFS is compared to orthogonal frequency division multiplexing (OFDM) for line-of-sight mobility automotive channels. Ray launching is used to simulate the channel for two different dynamic 3D vehicle to infrastructure transmission environments, using a Kirchhoff model for diffuse scattering from rough surfaces. Bit level simulations for transmission from a transmitter moving at speeds of 13 m/s and 31 m/s are then carried out, for both OFDM and OTFS. We find that with short length block codes OTFS outperforms OFDM in all simulated scenarios, reducing the block error rate by more than 50{\%} on average. Unlike previous work, simulations are performed in the time domain using practical rectangular pulse shapes, rather than theoretical ‘ideal pulses’. We provide an analysis of these pulses, and derive relevant expressions for the doubly dispersive channel in terms of the multipath delays and Doppler shifts.",
author = "Fred Wiffen and Lawrence Sayer and Zubeir Bocus and Angela Doufexi and Andrew Nix",
year = "2018",
month = "12",
day = "20",
doi = "10.1109/PIMRC.2018.8580850",
language = "English",
isbn = "9781538660102",
publisher = "Institute of Electrical and Electronics Engineers (IEEE)",
pages = "73--79",
booktitle = "2018 IEEE 29th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC 2018)",
address = "United States",

}

RIS - suitable for import to EndNote

TY - GEN

T1 - Comparison of OTFS and OFDM in Ray Launched sub-6 GHz and mmWave Line-of-Sight Mobility Channels

AU - Wiffen, Fred

AU - Sayer, Lawrence

AU - Bocus, Zubeir

AU - Doufexi, Angela

AU - Nix, Andrew

PY - 2018/12/20

Y1 - 2018/12/20

N2 - Orthogonal Time Frequency Space (OTFS) is a recently proposed modulation scheme for doublydispersive channels in which symbol multiplexing and processing is performed in the Doppler-delay domain, rather than conventional time-frequency domain. In this paper, the performance of OTFS is compared to orthogonal frequency division multiplexing (OFDM) for line-of-sight mobility automotive channels. Ray launching is used to simulate the channel for two different dynamic 3D vehicle to infrastructure transmission environments, using a Kirchhoff model for diffuse scattering from rough surfaces. Bit level simulations for transmission from a transmitter moving at speeds of 13 m/s and 31 m/s are then carried out, for both OFDM and OTFS. We find that with short length block codes OTFS outperforms OFDM in all simulated scenarios, reducing the block error rate by more than 50% on average. Unlike previous work, simulations are performed in the time domain using practical rectangular pulse shapes, rather than theoretical ‘ideal pulses’. We provide an analysis of these pulses, and derive relevant expressions for the doubly dispersive channel in terms of the multipath delays and Doppler shifts.

AB - Orthogonal Time Frequency Space (OTFS) is a recently proposed modulation scheme for doublydispersive channels in which symbol multiplexing and processing is performed in the Doppler-delay domain, rather than conventional time-frequency domain. In this paper, the performance of OTFS is compared to orthogonal frequency division multiplexing (OFDM) for line-of-sight mobility automotive channels. Ray launching is used to simulate the channel for two different dynamic 3D vehicle to infrastructure transmission environments, using a Kirchhoff model for diffuse scattering from rough surfaces. Bit level simulations for transmission from a transmitter moving at speeds of 13 m/s and 31 m/s are then carried out, for both OFDM and OTFS. We find that with short length block codes OTFS outperforms OFDM in all simulated scenarios, reducing the block error rate by more than 50% on average. Unlike previous work, simulations are performed in the time domain using practical rectangular pulse shapes, rather than theoretical ‘ideal pulses’. We provide an analysis of these pulses, and derive relevant expressions for the doubly dispersive channel in terms of the multipath delays and Doppler shifts.

U2 - 10.1109/PIMRC.2018.8580850

DO - 10.1109/PIMRC.2018.8580850

M3 - Conference contribution

SN - 9781538660102

SP - 73

EP - 79

BT - 2018 IEEE 29th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC 2018)

PB - Institute of Electrical and Electronics Engineers (IEEE)

ER -