Imperfect Digital-Fiber-Optic-Link-Based Cooperative Distributed Antennas With Fractional Frequency Reuse in Multicell Multiuser Networks

Xu, Xinyi; Zhang, Rong; Ghafoor, Salman; Hanzo, Lajos

doi:10.1109/tvt.2011.2171012

Cited by 14 publications

(18 citation statements)

References 26 publications

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“…Furthermore, F e is divided into three orthogonal frequency bands F i , i ∈ {1, 2, 3}, which are exclusively used at the cell-edge of each of the three adjacent cells. We have demonstrated that this regime is capable of sufficiently reducing the inter-cell CCI in the FFR-DAS [23], hence we can focus our attention on mitigating the CCI inside a single cell, as shown in Fig. 1.…”

Section: ) Mr-ffr-das Architecturementioning

confidence: 99%

Is the Low-Complexity Mobile-Relay-Aided FFR-DAS Capable of Outperforming the High-Complexity CoMP?

Yang

Alanis

et al. 2016

IEEE Trans. Veh. Technol.

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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.Index Terms-Base station cooperation, coordinated multipoint (CoMP), fractional frequency reuse, distributed antenna system (DAS), multicell uplink, mobile relay.

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Section: ) Mr-ffr-das Architecturementioning

confidence: 99%

Is the Low-Complexity Mobile-Relay-Aided FFR-DAS Capable of Outperforming the High-Complexity CoMP?

Yang

Alanis

et al. 2016

IEEE Trans. Veh. Technol.

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“…However, experiments demonstrate that this plain setting of DAS will impose strong CCI emerging from the neighbouring RAs, especially when the MSs are roaming near the angle halfway between the adjacent RAs [2]. A further promising technique of mitigating the RA-induced CCI is constituted by the Multiple-InputMultiple-Output (MIMO) based Cooperative Multiple Point (CoMP) transmissions [3], [4].…”

Section: Introductionmentioning

confidence: 99%

Effects of practical impairments on cooperative distributed antennas combined with fractional frequency reuse

Zhang

et al. 2012

2012 IEEE Wireless Communications and Networking Conference (WCNC)

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“…The family of hybrid techniques, which rely on a sophisticated combination of wireless mobile systems and optical fiber links have received substantial attention [1]. For example, Digital Fiber Optic (DFO) links [2] and Radio-over-Fiber (RoF) techniques [3] have been developed for supporting multicell systems.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, the Fractional Frequency Reuse (FFR) technique has been adopted in the Third Generation Partnership Project's (3GPP) Long-Term Evolution (LTE) standard [4] as well as in the Wordwide interoperability for Microwave Access (WiMAX) system [5], since it is capable of improving the cell-edge throughput. The downlink performance of the FFR based cooperative wireless and Digital-Fiber-Optic (DFO) aided communication has been investigated in [2], where a good cell-edge performance was reported.…”

Section: Introductionmentioning

confidence: 99%

Turbo-coded Star-QAM for cooperative wireless and optical-fiber communications

Liang

et al. 2012

2012 IEEE 3rd International Conference on Photonics

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Abstract-A low-complexity cooperative wireless and optical-fiber communication scheme is proposed for uplink communication in a Fractional Frequency Reuse (FFR) based multicell, multiuser system. The FFR principle is invoked for improving the cell-edge performance without reducing the throughput of the cell-center. Each cell is illuminated with the aid of six Remote Antennas (RAs), which are connected to the central base-station with the aid of realistically modelled imperfect optical-fiber links. When a Mobile Station (MS) is located at the cell-edge, the two nearest RAs can be invoked to detect and forward the user's signal to the base-station, based on the Single-Input Multiple-Output (SIMO) principle. Furthermore, we design a Turbo Coded (TC) 16-level Star-Quadrature Amplitude Modulation (StQAM) scheme for supporting optical-fiber-aided cooperative wireless transmission, where the receiver does not have to estimate the channel state information. Hence, a lower detection complexity can be achieved when compared to coherently detected schemes, albeit naturally, at a 3 dB power-loss. We also investigated the effect of phase-rotation imposed by imperfect optical-fiber links. We found that our noncoherent TC-StQAM scheme is robust to both wireless and optical-fiber imperfections.

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Imperfect Digital-Fiber-Optic-Link-Based Cooperative Distributed Antennas With Fractional Frequency Reuse in Multicell Multiuser Networks

Cited by 14 publications

References 26 publications

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?

Effects of practical impairments on cooperative distributed antennas combined with fractional frequency reuse

Turbo-coded Star-QAM for cooperative wireless and optical-fiber communications

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