Robust full duplex radio link

Bharadia, Dinesh; Joshi, Kiran

doi:10.1145/2619239.2631425

Cited by 13 publications

(13 citation statements)

References 7 publications

(11 reference statements)

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“…We assume SNR = 0 dB, T = 1 ms, B = 180 kHz, and f (z sd ) = z sd in the following numerical results. It has been demonstrated that almost ideal full-duplex relaying can be achieved (1.87× gain in median throughput compared with 2× of the ideal case (see [32,Section 5.3])). Therefore, without loss of generality, we assume ideal full-duplex relay with γ = 1, i.e.,z sr = z sr .…”

Section: Numerical Resultsmentioning

confidence: 99%

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Effective Capacity of Buffer-Aided Full-Duplex Relay Systems With Selection Relaying

Qiao

2016

IEEE Trans. Commun.

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In this work, the achievable rate of three-node relay systems with selection relaying under statistical delay constraints, imposed on the limitations of the maximum end-to-end delay violation probabilities, is investigated. It is assumed that there are queues of infinite size at both the source and relay node, and the source can select the relay or destination for data reception. Given selection relaying policy, the effective bandwidth of the arrival processes of the queue at the relay is derived. Then, the maximum constant arrival rate can be identified as the maximum effective capacity as a function of the statistical end-to-end queueing delay constraints, signal-to-noise ratios (SNR) at the source and relay, the fading distributions of the links, and the relay policy. Subsequently, a relay policy that incorporates the statistical delay constraints is proposed. It is shown that the proposed relay policy can achieve better performance than existing protocols. Moreover, it is demonstrated that buffering relay model can still help improve the throughput of relay systems in the presence of statistical delay constraints and source-destination link. Index TermsBuffer-aided relay, statistical delay constraints, selection relaying, effective capacity, intree-network.

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Section: Numerical Resultsmentioning

confidence: 99%

“…In this work, we assume full-duplex relay such that transmission and reception can be performed simultaneously. Note that full-duplex relaying can be achieved through some form of analog self-interference cancellation followed by digital self-interference cancellation in the baseband domain [31], [32].…”

Section: A System Modelmentioning

confidence: 99%

Effective Capacity of Buffer-Aided Full-Duplex Relay Systems With Selection Relaying

Qiao

2016

IEEE Trans. Commun.

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“…Note that we assume that the pico BS employs DF to process and retransmit the message sent from the macro BS to the user in pico-cell. We assume that full-duplex can be achieved with perfect self-interference cancellation through analog and digital cancellation [20], [21]. We further assume that the macro BS employs JSDM for data delivery to the users and the pico BS.…”

Section: A System Modelmentioning

confidence: 99%

“…When user k is served by the macro or pico BS, the received SINR is given by SINR mk or SINR sk , respectively, for (50). Now, for a given user associated with the macro BS or the pico BS, we can obtain the outage probability from (15) or (20) accordingly. Then, we can take the expectation of the resultant outage probability over the user locations associated with the macro BS or the pico BS, respectively.…”

Section: Proof Of Theoremmentioning

confidence: 99%

Outage Analysis of Relay-Assisted mmWave Cellular Systems Employing JSDM

2019

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In this paper, the outage performance of relay-assisted millimeter wave (mmWave) cellular systems employing joint spatial division and multiplexing (JSDM) is investigated. It is assumed that the macro base station (BS) equipped with a large number of antennas serves the single antenna pico BS (as a relay) and users simultaneously, and that the pico BS is located at the edge of the macro cell.Theoretical analysis of the signal-to-interference-plus-noise ratio (SINR) outage probability of each user is first obtained. The cell SINR outage probability is then derived. Under the noise-limited assumption, simplified closed-form expressions of the outage probability are given as well. Simulation results demonstrating the performance improvement due to the relay introduced by the pico BS are provided.Overall, the impact of deploying pico BS as a relay in the mmWave cellular systems is characterized.The authors are with the offer an order of magnitude increase in achievable rate compared with current cellular systems and play an important role in future cellular networks [5].Despite the great potential of high data rates with mmWave systems due to the richness in bandwidth, the transmission range is generally limited due to the high free-space path loss and poor penetration in high frequency [3]. Thus, it is highly possible that some users may fall in outage in mmWave systems, and hence the coverage analysis of mmWave systems have attracted much attention recently (see e.g., [8]-[14] and references therein). For instance, the authors have proposed a stochastic geometry framework for analyzing the coverage and rate of mmWave systems assuming pencil beams for the users in [8]. They have shown that there is an optimal relative base station (BS) density for the signal-to-interference-plus-noise ratio (SINR) and rate performance beyond which the performance doesnot improve in a dense mmWave network. An analytical framework which computes coverage probabilities and rate of mmWave cellular networks has been proposed in [9], where path-loss and blockage models based on empirical data for mmWave propagation have been taken into account. Relying on the noiselimited assumption for modeling mmWave cellular systems, simple and closed-form formulas for computing the coverage probability and the average rate have been obtained. In [10], the authors have made a further step and investigated the coverage in heterogeneous mmWave networks with homogeneous Poisson point process (PPP) models of the BS and user distributions, where beamforming with pencil beam at the BSs is assumed. It has been shown that biasing towards the small cells in user association can improve both the coverage probability and the rate. Also, the authors have assumed homogeneous PPP model for the macro cells while Poisson hole process (PHP) model for small cells and studied the coverage of the proposed non-uniform mmWave heterogeneous cellular network in [11]. They have also shown that there exists an optimal density of the small cells to achieve the best coverage pro...

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“…Note that a relay usually operates in either FD or HD mode. In FD relaying, the relays transmit and receive at the same time, and this operation will increase the hardware complexity [11], [12]. We consider HD relays in this paper.…”

Section: Introductionmentioning

confidence: 99%

Alternate Distributed Beamforming for Decode-and-Forward Multi-Relay Systems Using Buffers

Zhou

Qiao

2020

2020 International Conference on Computing, Networking and Communications (ICNC)

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1 In this paper, link selection for half-duplex bufferaided relay systems is revisited. A new fixed scheduling policy referred as alternate distributed beamforming (ADB) is proposed, in which the relays are divided into two groups, with one group receiving the same information broadcast from the source and the other group transmitting the common messages to the destination via distributed beamforming in each time slot. It is worth noting that the relays used for reception and transmission are determined without the need of instantaneous channel state information (CSI). Theoretical analysis of the achievable throughput of the proposed scheme in Rayleigh fading is provided and the approximate closed-form expressions are derived. Through numerical results, it is shown that compared with existing link selection policies, the proposed fixed scheduling ADB achieves a significant improvement in achievable throughput.

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Robust full duplex radio link

Cited by 13 publications

References 7 publications

Effective Capacity of Buffer-Aided Full-Duplex Relay Systems With Selection Relaying

Effective Capacity of Buffer-Aided Full-Duplex Relay Systems With Selection Relaying

Outage Analysis of Relay-Assisted mmWave Cellular Systems Employing JSDM

Alternate Distributed Beamforming for Decode-and-Forward Multi-Relay Systems Using Buffers

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