Design and Characterization of a Full-duplex Multi-antenna System for WiFi networks
Melissa Duarte,Ashutosh Sabharwal,Vaneet Aggarwal,Rittwik Jana,Kadangode K. Ramakrishnan,Christopher W. Rice,Nemmara K. Shankaranarayanan +6 more
TL;DR: In this article, the authors present an experimental and simulation based study to evaluate the use of full-duplex as a mode in practical IEEE 802.11 networks and conclude that there are potentially significant benefits gained from including a fullduplex mode in future WiFi standards.
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Abstract: In this paper, we present an experimental and simulation based study to evaluate the use of full-duplex as a mode in practical IEEE 802.11 networks. To enable the study, we designed a 20 MHz multi-antenna OFDM full-duplex physical layer and a full-duplex capable MAC protocol which is backward compatible with current 802.11. Our extensive over-the-air experiments, simulations and analysis demonstrate the following two results. First, the use of multiple antennas at the physical layer leads to a higher ergodic throughput than its hardware-equivalent multi-antenna half-duplex counterparts, for SNRs above the median SNR encountered in practical WiFi deployments. Second, the proposed MAC translates the physical layer rate gain into near doubling of throughput for multi-node single-AP networks. The two combined results allow us to conclude that there are potentially significant benefits gained from including a full-duplex mode in future WiFi standards.
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Citations
Joint design of multi-tap analog cancellation and digital beamforming for reduced complexity full duplex MIMO systems
George C. Alexandropoulos,Melissa Duarte +1 more
- 01 May 2017
TL;DR: In this paper, the authors proposed a low-complexity full-duplex MIMO system with analog cancellation and digital beamforming for a narrowband flat fading channel model.
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Power Scaling of Full-Duplex Two-Way Massive MIMO Relay Systems With Correlated Antennas and MRC/MRT Processing
TL;DR: It is found that the transmission powers at both the MIMO users and the relay can be scaled down inversely proportional to the number of antennas at the relay while maintaining a desirable sum-rate when the number in the relay grows large.
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Resource Allocation and Rate Gains in Practical Full-Duplex Systems
TL;DR: In this article, the authors study the problem of jointly allocating power levels to different channels and selecting the frequency of maximum SI suppression, where the objective is to maximize the sum of the rates over uplink and downlink orthogonal frequency division multiplexing channels.
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Energy-Efficiency of Millimeter-Wave Full-Duplex Relaying Systems: Challenges and Solutions
TL;DR: A number of promising EE-oriented solutions for designing FD relays enabled systems, including adaptive self-interference cancellation, transmission power adaptation, hybrid relaying mode selection, multi-input-multi-output (MIMO), and massive MIMO FD relaying are outlined.
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Beamforming Based Full-Duplex for Millimeter-Wave Communication
TL;DR: A low-complexity algorithm, which iteratively maximizes signal power while suppressing SI, is proposed and its convergence is proven and three suboptimal schemes are proposed, which show different robustness against the geometry of Tx/Rx antenna arrays and channel estimation errors.
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Mayank Jain,Jung-Il Choi,Taemin Kim,Dinesh Bharadia,Siddharth Seth,Kannan Srinivasan,Philip Levis,Sachin Katti,Prasun Sinha +8 more
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Experiment-Driven Characterization of Full-Duplex Wireless Systems
TL;DR: This work shows that the average amount of cancellation increases for active cancellation techniques as the received self-interference power increases, and shows that digital cancellation is more effective when applied selectively based on measured suppression values.