Optimal dynamic power control for full-duplex bidirectional-channel based wireless networks

Cheng, Wenchi; Zhang, Xi; Zhang, Hailin

doi:10.1109/infcom.2013.6567125

Cited by 67 publications

(51 citation statements)

References 22 publications

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“…In (40) and (41), c U L k (c 0 ) is the transmitter distortion at the k-th UL user (BS), which is modeled as in (5)- (6), and e DL j (e 0 ) is the receiver distortion at the j-th DL user (BS), which is modeled as in (7)- (8).…”

Section: Extension To Full-duplex Cellular Systemsmentioning

confidence: 99%

Weighted Sum-Rate Maximization for Full-Duplex MIMO Interference Channels

Cırık

Wang

Hua

et al. 2015

IEEE Trans. Commun.

107

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We consider a K link multiple-input multiple-output (MIMO) interference channel, where each link consists of two full-duplex (FD) nodes exchanging information simultaneously in a bi-directional communication fashion. The nodes in each pair suffer from self-interference due to operating in FD mode, and inter-user interference from other links due to simultaneous transmission at each link. We consider the transmit and receive filter design for Weighted Sum-Rate (WSR) maximization problem subject to sum-power constraint of the system or individual power constraints at each node of the system. Based on the relationship between WSR and Weighted Minimum-MeanSquared-Error (WMMSE) problems for FD MIMO interference channels, we propose a low complexity alternating algorithm which converges to a local WSR optimum point. Moreover, we show that the proposed algorithm is not only applicable to FD MIMO interference channels, but also applicable to FD cellular systems, in which a base station (BS) operating in FD mode serves multiple uplink (UL) and downlink (DL) users operating in halfduplex (HD) mode, simultaneously. It is shown in simulations that the sum-rate achieved by FD mode is higher than the sum-rate achieved by baseline HD schemes.

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Section: Extension To Full-duplex Cellular Systemsmentioning

confidence: 99%

Weighted Sum-Rate Maximization for Full-Duplex MIMO Interference Channels

Cırık

Wang

Hua

et al. 2015

IEEE Trans. Commun.

107

View full text Add to dashboard Cite

show abstract

“…4 shows the feasible region and optimal point of transmit powers with respect to the transmit power of the AP and TX. The blue line is the upper bound that satisfies (11), and the green line is the lower bound that satisfies (12). The gray-shaded area is the feasible region that simultaneously satisfies both (11) and (12), i.e., the transmit powers of the AP and TX in the region ensure the feasibility of simultaneous uplink and downlink transmissions.…”

Section: Transmit Power Adjustmentmentioning

confidence: 99%

“…The blue line is the upper bound that satisfies (11), and the green line is the lower bound that satisfies (12). The gray-shaded area is the feasible region that simultaneously satisfies both (11) and (12), i.e., the transmit powers of the AP and TX in the region ensure the feasibility of simultaneous uplink and downlink transmissions. Within the feasible region, we need to find the optimal transmit powers of the AP and TX to maximize the SINR values of the uplink and downlink transmissions.…”

Section: Transmit Power Adjustmentmentioning

confidence: 99%

Power-Controlled Medium Access Control Protocol for Full-Duplex WiFi Networks

Choi

Lim

Sabharwal

2015

IEEE Trans. Wireless Commun.

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Recent advances in signal processing have demonstrated in-band full-duplex capability at WiFi ranges. In addition to simultaneous two-way exchange between two nodes, full-duplex access points can potentially support simultaneous uplink and downlink flows. However, the atomic three-node topology, which allows simultaneous uplink and downlink, leads to inter-client interference. In this paper, we propose a random-access medium access control protocol using distributed power control to manage inter-client interference in wireless networks with full-duplexcapable access points that serve half-duplex clients. Our key contributions are two-fold. First, we identify the regimes in which power control provides sum throughput gains for the three-node atomic topology, with one uplink flow and one downlink flow. Second, we develop and benchmark PoCMAC, a full 802.11-based protocol that allows distributed selection of a three-node topology. The proposed MAC protocol is shown to achieve higher capacity as compared to an equivalent half-duplex counterpart, while maintaining similar fairness characteristics in single contention domain networks. We carried out extensive simulations and softwaredefined radio-based experiments to evaluate the performance of the proposed MAC protocol, which is shown to achieve a significant improvement over its half-duplex counterpart in terms of throughput performance.

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“…, ∈ { , }, where and , respectively, refer to a primary and secondary user. (0 < ≤ 1) represents the self-interference mitigation coefficient [8,23]. If is high, this means that self-interference is mitigated well.…”

Section: Spectrum Sensing and Self Interference Effectmentioning

confidence: 99%

Cooperative Full-Duplex Physical and MAC Layer Design in Asynchronous Cognitive Networks

Febrianto

Hou

Shikh-Bahaei

2017

Wireless Communications and Mobile Computing

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In asynchronous cognitive networks (CNs), where there is no synchronization between primary users (PUs) and secondary users (SUs), spectrum sensing becomes a challenging task. By combining cooperative spectrum sensing and full-duplex (FD) communications in asynchronous CNs, this paper demonstrates improvements in terms of the average throughput of both PUs and SUs for particular transmission schemes. The average throughputs are derived for SUs and PUs under different FD schemes, levels of residual self-interference, and number of cooperative SUs. In particular, we consider two types of FD schemes, namely, FD transmit-sense-reception (FDr) and FD transmit-sense (FDs). FDr allows SUs to transmit and receive data simultaneously, whereas, in FDs, the SUs continuously sense the channel during the transmission time. This paper shows the respective trade-offs and obtains the optimal scheme based on cooperative FD spectrum sensing. In addition, SUs' average throughput is analyzed under different primary channel utilization and multichannel sensing schemes. Finally, new FD MAC protocol design is proposed and analyzed for FD cooperative spectrum sensing. We found optimum parameters for our proposed MAC protocol to achieve higher average throughput in certain applications.

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Optimal dynamic power control for full-duplex bidirectional-channel based wireless networks

Cited by 67 publications

References 22 publications

Weighted Sum-Rate Maximization for Full-Duplex MIMO Interference Channels

Weighted Sum-Rate Maximization for Full-Duplex MIMO Interference Channels

Power-Controlled Medium Access Control Protocol for Full-Duplex WiFi Networks

Cooperative Full-Duplex Physical and MAC Layer Design in Asynchronous Cognitive Networks

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