Journal
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
Volume 63, Issue 3, Pages 1160-1177Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TVT.2013.2284712
Keywords
Full-duplex; media access control (MAC); orthogonal frequency-division multiplexing (OFDM); WiFi; 802.11
Categories
Funding
- Roberto Rocca Fellowship
- National Science Foundation [CNS-0923479, CNS-1012921, CNS-1161596]
- Division Of Computer and Network Systems
- Direct For Computer & Info Scie & Enginr [1161596] Funding Source: National Science Foundation
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In this paper, we present an experiment-and simulation-based study to evaluate the use of full duplex (FD) as a potential mode in practical IEEE 802.11 networks. To enable the study, we designed a 20-MHz multiantenna orthogonal frequency-division-multiplexing (OFDM) FD physical layer and an FD media access control (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 multiantenna half-duplex (HD) 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 multinode single-AP networks. The two results allow us to conclude that there are potentially significant benefits gained from including an FD mode in future WiFi standards.
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