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Is the low-complexity mobile-relay-aided FFR-DAS capable of outperforming the high-complexity CoMP?

Is the low-complexity mobile-relay-aided FFR-DAS capable of outperforming the high-complexity CoMP?
Is the low-complexity mobile-relay-aided FFR-DAS capable of outperforming the high-complexity CoMP?
Coordinated multi-point transmission/reception aided collocated antenna system (CoMP-CAS) and mobile relay assisted fractional frequency reuse distributed antenna system (MR-FFR-DAS) constitute a pair of virtual-MIMO based technical options for achieving high spectral efficiency in interference-limited cellular networks. In practice both techniques have their respective pros and cons, which are studied in this paper by evaluating the achievable cell-edge performance on the uplink of multicell systems. We show that assuming the same antenna configuration in both networks, the maximum available cooperative spatial diversity inherent in the MR-FFR-DAS is lower than that of the CoMP-CAS. However, when the cell-edge MSs have a low transmission power, the lower-complexity MR-FFR-DAS relying on the simple single-cell processing may outperform the CoMP-CAS by using the proposed soft-combining based probabilistic data association (SC-PDA) receiver, despite the fact that the latter scheme is more complex and incurs a higher cooperation overhead. Furthermore, the benefits of the SC-PDA receiver may be enhanced by properly selecting the MRs' positions. Additionally, we show that the performance of the cell-edge MSs roaming near the angular direction halfway between two adjacent RAs (i.e. the "worst-case direction") of the MR-FFR-DAS may be more significantly improved than that of the cell-edge MSs of other directions by using multiuser power control, which also improves the fairness amongst cell-edge MSs. Our simulation results show that given a moderate MS transmit power, the proposed MR-FFR-DAS architecture employing the SC-PDA receiver is capable of achieving significantly better bit-error rate (BER) and effective throughput across the entire cell-edge area, including even the ”worst-case direction” and the cell-edge boundary, than the CoMP-CAS architecture.
Base station cooperation, coordinated multipoint (CoMP), fractional frequency reuse, distributed antenna systems (DAS), multicell uplink, mobile relay.
0018-9545
2154-2169
Yang, Shaoshi
df1e6c38-ff3b-473e-b36b-4820db908e60
Xu, Xinyi
1250977c-13d5-418b-b506-8cb7ad1ba3a6
Alanis, Dimitrios
39e04fad-7530-44f2-b7d3-1b20722a0bd2
Ng, Soon Xin
e19a63b0-0f12-4591-ab5f-554820d5f78c
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Yang, Shaoshi
df1e6c38-ff3b-473e-b36b-4820db908e60
Xu, Xinyi
1250977c-13d5-418b-b506-8cb7ad1ba3a6
Alanis, Dimitrios
39e04fad-7530-44f2-b7d3-1b20722a0bd2
Ng, Soon Xin
e19a63b0-0f12-4591-ab5f-554820d5f78c
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Yang, Shaoshi, Xu, Xinyi, Alanis, Dimitrios, Ng, Soon Xin and Hanzo, Lajos (2016) Is the low-complexity mobile-relay-aided FFR-DAS capable of outperforming the high-complexity CoMP? IEEE Transactions on Vehicular Technology, 65 (4), 2154-2169. (doi:10.1109/TVT.2015.2416333).

Record type: Article

Abstract

Coordinated multi-point transmission/reception aided collocated antenna system (CoMP-CAS) and mobile relay assisted fractional frequency reuse distributed antenna system (MR-FFR-DAS) constitute a pair of virtual-MIMO based technical options for achieving high spectral efficiency in interference-limited cellular networks. In practice both techniques have their respective pros and cons, which are studied in this paper by evaluating the achievable cell-edge performance on the uplink of multicell systems. We show that assuming the same antenna configuration in both networks, the maximum available cooperative spatial diversity inherent in the MR-FFR-DAS is lower than that of the CoMP-CAS. However, when the cell-edge MSs have a low transmission power, the lower-complexity MR-FFR-DAS relying on the simple single-cell processing may outperform the CoMP-CAS by using the proposed soft-combining based probabilistic data association (SC-PDA) receiver, despite the fact that the latter scheme is more complex and incurs a higher cooperation overhead. Furthermore, the benefits of the SC-PDA receiver may be enhanced by properly selecting the MRs' positions. Additionally, we show that the performance of the cell-edge MSs roaming near the angular direction halfway between two adjacent RAs (i.e. the "worst-case direction") of the MR-FFR-DAS may be more significantly improved than that of the cell-edge MSs of other directions by using multiuser power control, which also improves the fairness amongst cell-edge MSs. Our simulation results show that given a moderate MS transmit power, the proposed MR-FFR-DAS architecture employing the SC-PDA receiver is capable of achieving significantly better bit-error rate (BER) and effective throughput across the entire cell-edge area, including even the ”worst-case direction” and the cell-edge boundary, than the CoMP-CAS architecture.

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More information

Published date: April 2016
Keywords: Base station cooperation, coordinated multipoint (CoMP), fractional frequency reuse, distributed antenna systems (DAS), multicell uplink, mobile relay.
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 343255
URI: http://eprints.soton.ac.uk/id/eprint/343255
ISSN: 0018-9545
PURE UUID: 3954bdad-2d3e-491b-bd03-c885c4fca298
ORCID for Soon Xin Ng: ORCID iD orcid.org/0000-0002-0930-7194
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 08 Oct 2012 15:15
Last modified: 07 Oct 2020 05:50

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