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Space-, time- and frequency-domain index modulation for next-generation wireless: a unified single-/multi-carrier and single-/multi-RF MIMO framework

Space-, time- and frequency-domain index modulation for next-generation wireless: a unified single-/multi-carrier and single-/multi-RF MIMO framework
Space-, time- and frequency-domain index modulation for next-generation wireless: a unified single-/multi-carrier and single-/multi-RF MIMO framework
As the enabling technolgies move up to the mmWave and even to the TeraHertz bands for the next-generation wireless systems, the signal processing of high-bandwidth orthogonal frequency division multiplexing (OFDM) becomes increasingly power-thirsty, owing to the following OFDM deficiencies: (1) the high peak-to-average power ratio (PAPR); (2) the bandwidth efficiency loss due to the cyclic prefix (CP) overhead; (3) the sensitivity to carrier frequency offset; (4) the complex out-of band (OOB) filtering. Over the past six decades, a variety of waveforms have been developed in order to mitigate these deficiencies, which are generally achieved at the cost of compromising
some of OFDM’s beneficial properties, such as its subcarrier (SC) orthogonality, its high throughput and its straighforward adoption to multiple-input multiple-output (MIMO) systems. Against this background, we propose a new waveform termed
as multi-band discrete Fourier transform spread-OFDM with index modulation (MB-DFT-S-OFDM-IM), where the component multi-carrier techniques are conceived to constructively function together in order to mitigate the OFDM deficiencies without
compromising the beneficial OFDM properties. More explicitly, first of all, the PAPR is reduced by the DFT-precoding. Secondly, thanks to the IM design, MB-DFT-S-OFDM-IM is capable of achieving a high throughput that is strictly equal to or higher than the OFDM throughput. Thirdly, MB-DFT-S-OFDM-IM achieves a beneficial frequency diversity gain, which leads to a higher tolerance to carrier frequency offset. Fourthly, the OOB filters are placed in each sub-band before DFT, so that the SC orthogonality remains intact, which is unique to the proposed MB-DFT-S-OFDM-IM structure. Last but not least, we extend the proposed MB-DFT-S-OFDM-IM to support a variety of MIMO schemes, where the IM philosophy is integrated with the space-, time- and frequency-domains within a single unified platform.
1536-1276
Xu, Chao
5710a067-6320-4f5a-8689-7881f6c46252
Xiong, Yifeng
f93bfe9b-7a6d-47e8-a0a8-7f4f6632ab21
Ishikawa, Naoki
7330750b-e4bc-4f46-b500-e190264b2af6
Mysore rajashekar, Rakshith
d2fbbb04-57c5-4165-908f-600fc1fbdeab
Sugiura, Shinya
4c8665dd-1ad8-4dc0-9298-bf04eded3579
Zhaocheng, Wang
e2141594-58b2-4ba7-9b8f-f3778499ba8c
Ng, Soon Xin
e19a63b0-0f12-4591-ab5f-554820d5f78c
Yang, Lie-Liang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Xu, Chao
5710a067-6320-4f5a-8689-7881f6c46252
Xiong, Yifeng
f93bfe9b-7a6d-47e8-a0a8-7f4f6632ab21
Ishikawa, Naoki
7330750b-e4bc-4f46-b500-e190264b2af6
Mysore rajashekar, Rakshith
d2fbbb04-57c5-4165-908f-600fc1fbdeab
Sugiura, Shinya
4c8665dd-1ad8-4dc0-9298-bf04eded3579
Zhaocheng, Wang
e2141594-58b2-4ba7-9b8f-f3778499ba8c
Ng, Soon Xin
e19a63b0-0f12-4591-ab5f-554820d5f78c
Yang, Lie-Liang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Xu, Chao, Xiong, Yifeng, Ishikawa, Naoki, Mysore rajashekar, Rakshith, Sugiura, Shinya, Zhaocheng, Wang, Ng, Soon Xin, Yang, Lie-Liang and Hanzo, Lajos (2021) Space-, time- and frequency-domain index modulation for next-generation wireless: a unified single-/multi-carrier and single-/multi-RF MIMO framework. IEEE Transactions on Wireless Communications. (In Press)

Record type: Article

Abstract

As the enabling technolgies move up to the mmWave and even to the TeraHertz bands for the next-generation wireless systems, the signal processing of high-bandwidth orthogonal frequency division multiplexing (OFDM) becomes increasingly power-thirsty, owing to the following OFDM deficiencies: (1) the high peak-to-average power ratio (PAPR); (2) the bandwidth efficiency loss due to the cyclic prefix (CP) overhead; (3) the sensitivity to carrier frequency offset; (4) the complex out-of band (OOB) filtering. Over the past six decades, a variety of waveforms have been developed in order to mitigate these deficiencies, which are generally achieved at the cost of compromising
some of OFDM’s beneficial properties, such as its subcarrier (SC) orthogonality, its high throughput and its straighforward adoption to multiple-input multiple-output (MIMO) systems. Against this background, we propose a new waveform termed
as multi-band discrete Fourier transform spread-OFDM with index modulation (MB-DFT-S-OFDM-IM), where the component multi-carrier techniques are conceived to constructively function together in order to mitigate the OFDM deficiencies without
compromising the beneficial OFDM properties. More explicitly, first of all, the PAPR is reduced by the DFT-precoding. Secondly, thanks to the IM design, MB-DFT-S-OFDM-IM is capable of achieving a high throughput that is strictly equal to or higher than the OFDM throughput. Thirdly, MB-DFT-S-OFDM-IM achieves a beneficial frequency diversity gain, which leads to a higher tolerance to carrier frequency offset. Fourthly, the OOB filters are placed in each sub-band before DFT, so that the SC orthogonality remains intact, which is unique to the proposed MB-DFT-S-OFDM-IM structure. Last but not least, we extend the proposed MB-DFT-S-OFDM-IM to support a variety of MIMO schemes, where the IM philosophy is integrated with the space-, time- and frequency-domains within a single unified platform.

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MB_DFT_S_OFDM_IM_TWC_Accept_two_col - Accepted Manuscript
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Accepted/In Press date: 20 January 2021

Identifiers

Local EPrints ID: 446457
URI: http://eprints.soton.ac.uk/id/eprint/446457
ISSN: 1536-1276
PURE UUID: d7c7ea8f-3f30-4d55-a60f-5b7a3f019db1
ORCID for Chao Xu: ORCID iD orcid.org/0000-0002-8423-0342
ORCID for Yifeng Xiong: ORCID iD orcid.org/0000-0002-4290-7116
ORCID for Rakshith Mysore rajashekar: ORCID iD orcid.org/0000-0002-7688-7539
ORCID for Soon Xin Ng: ORCID iD orcid.org/0000-0002-0930-7194
ORCID for Lie-Liang Yang: ORCID iD orcid.org/0000-0002-2032-9327
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 10 Feb 2021 17:33
Last modified: 18 Feb 2021 17:37

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Contributors

Author: Chao Xu ORCID iD
Author: Yifeng Xiong ORCID iD
Author: Naoki Ishikawa
Author: Rakshith Mysore rajashekar ORCID iD
Author: Shinya Sugiura
Author: Wang Zhaocheng
Author: Soon Xin Ng ORCID iD
Author: Lie-Liang Yang ORCID iD
Author: Lajos Hanzo ORCID iD

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