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On the performance of multiuser MIMO systems relying on full-duplex CSI acquisition

On the performance of multiuser MIMO systems relying on full-duplex CSI acquisition
On the performance of multiuser MIMO systems relying on full-duplex CSI acquisition
In this paper, we propose a combined full duplex (FD) and half duplex (HD) based transmission and channel acquisition model for open-loop multiuser multiple-input multiple-output (MIMO) systems. Assuming residual self interference (SI) at the BS, the idea is to utilize the FD mode during the uplink (UL) training phase in order to achieve simultaneous downlink (DL) data transmission and UL CSI acquisition. More specifically, the BS begins serving a user when its CSI becomes available, while at the same time, it also receives UL pilots from the next scheduled user. We investigate both zero-forcing (ZF) and maximum ratio transmission (MRT) MIMO beamforming techniques for the DL data transmission in the FD mode. The BS switches to the HD mode once it receives the CSI of all users and it employs ZF beamforming for the DL data transmission until the end of the transmission frame. Furthermore, we derive closed-form approximations for the lower bounded ergodic achievable rate relying on the proposed model. Our numerical results show that the proposed FD-HD transmission and channel acquisition approach outperforms its conventional HD counterpart and achieves higher data rates.
0090-6778
Mirza, Jawad
10001398-6604-484f-b7a8-31ffcadeb47f
Zheng, Gan
b11bd5ef-6c5e-44f0-a7e0-a679d94cae80
Wong, Kai-Kit
bb7395be-1830-4de8-b714-8dca2b8e6979
Lambotharan, Sangarapillai
9839317e-0bf4-4d7c-8722-87d3ec9086de
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Mirza, Jawad
10001398-6604-484f-b7a8-31ffcadeb47f
Zheng, Gan
b11bd5ef-6c5e-44f0-a7e0-a679d94cae80
Wong, Kai-Kit
bb7395be-1830-4de8-b714-8dca2b8e6979
Lambotharan, Sangarapillai
9839317e-0bf4-4d7c-8722-87d3ec9086de
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Mirza, Jawad, Zheng, Gan, Wong, Kai-Kit, Lambotharan, Sangarapillai and Hanzo, Lajos (2018) On the performance of multiuser MIMO systems relying on full-duplex CSI acquisition. IEEE Transactions on Communications. (In Press)

Record type: Article

Abstract

In this paper, we propose a combined full duplex (FD) and half duplex (HD) based transmission and channel acquisition model for open-loop multiuser multiple-input multiple-output (MIMO) systems. Assuming residual self interference (SI) at the BS, the idea is to utilize the FD mode during the uplink (UL) training phase in order to achieve simultaneous downlink (DL) data transmission and UL CSI acquisition. More specifically, the BS begins serving a user when its CSI becomes available, while at the same time, it also receives UL pilots from the next scheduled user. We investigate both zero-forcing (ZF) and maximum ratio transmission (MRT) MIMO beamforming techniques for the DL data transmission in the FD mode. The BS switches to the HD mode once it receives the CSI of all users and it employs ZF beamforming for the DL data transmission until the end of the transmission frame. Furthermore, we derive closed-form approximations for the lower bounded ergodic achievable rate relying on the proposed model. Our numerical results show that the proposed FD-HD transmission and channel acquisition approach outperforms its conventional HD counterpart and achieves higher data rates.

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Full_Duplex_paper - Accepted Manuscript
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Accepted/In Press date: 13 May 2018

Identifiers

Local EPrints ID: 421021
URI: http://eprints.soton.ac.uk/id/eprint/421021
ISSN: 0090-6778
PURE UUID: 4862765e-854e-4285-bc5e-5233a09b2f67
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

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Date deposited: 21 May 2018 16:30
Last modified: 07 Oct 2020 05:23

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