Results 231 to 240 of about 217,874 (273)
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The Journal of the Acoustical Society of America, 1993
Disclosed is an adaptive Finite Impulse Response ("FIR") filter speakerphone that provides improved echo cancelation by the inclusion of a tracking comb filter having nulls which change to track the voice portion of communications. The speakerphone also includes a pair of ambient noise recorders for recording both ambient background noise received from
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Disclosed is an adaptive Finite Impulse Response ("FIR") filter speakerphone that provides improved echo cancelation by the inclusion of a tracking comb filter having nulls which change to track the voice portion of communications. The speakerphone also includes a pair of ambient noise recorders for recording both ambient background noise received from
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On the Cross Link Interference of 5G with Flexible Duplex and Full Duplex
2020 IEEE Wireless Communications and Networking Conference Workshops (WCNCW), 2020This paper analyzes the cross interference of flexible duplex and full duplex when the technology is deployed as a network for seamless coverage. Different cross link interference characteristics for the flexible duplex and the full duplex are introduced, and the variable cross link interference management schemes are also analyzed.
Zhiheng Guo, Yongqiang Fei
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X-Duplex Radios: Flexible Switching Between Full-Duplex and Half-Duplex
IEEE Wireless Communications Letters, 2018Full duplex (FD) has the potential to achieve full sum rate, but in practice, may be affected by the self interference, i.e., a loop-back interference from the transmit module to its receive module, while half duplex (HD) can avoid the self interference at the expense of lower resource efficiency.
Chao Yao, Lingyang Song, Yonghui Li 0001
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Capacity Gain of Full Duplex Self-Backhauling and Opportunistic Full Duplex Self-Backhauling
IEEE Transactions on Vehicular Technology, 2021This paper investigates the capacity gain of full duplex (FD) self-backhauling over the half duplex (HD) counterpart in downlink cellular systems, and then proposes an opportunistic FD scheme. The first step is to derive the capacity gain of FD self-backhauling over the HD counterpart as a function of the system parameters in a computationally ...
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Degrees of Freedom for Half-Duplex and Full-Duplex Cognitive Radios
IEEE Transactions on Vehicular Technology, 2019Full-duplex (FD) enabled cognitive radio (CR) is promising since it can largely improve the spectrum efficiency by simultaneously learning the radio environments and delivering data traffic. The performance gain of FD CR is achieved under the premise that the self-interference (SI) can be suppressed to be sufficiently small.
Dongming Li, Dengyin Zhang, Julian Cheng
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Friendly Full Duplex: A Multi-User Full Duplex Method for MGfast in Coexistence with G.fast
2018 IEEE Global Communications Conference (GLOBECOM), 2018Multi-user full duplex (FDX) transmission is instrumental to provide sufficient coverage and reach for the multi-gigabit data rates targeted by MGfast. However, to seamlessly introduce such a technology into access networks, it is important to consider coexistence with legacy half duplex G.fast.
Paschalis Tsiaflakis +3 more
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The Journal of the Acoustical Society of America, 1998
A full duplex speakerphone for connection to a telephone system employs adaptive FIR filters for acoustic and electrical echo cancellation in a novel combination with analog gain controls responsive to incoming signal levels and a transmit level control responsive to the receive signal power level.
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A full duplex speakerphone for connection to a telephone system employs adaptive FIR filters for acoustic and electrical echo cancellation in a novel combination with analog gain controls responsive to incoming signal levels and a transmit level control responsive to the receive signal power level.
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GRT-duplex: A Novel SDR Platform for Full-Duplex WiFi
Mobile Networks and Applications, 2016Full-duplex wireless communication enables concurrent transmission and reception over the same radio channel. It thus achieves higher efficiency in spectrum utilization compared with its half-duplex counterpart. In recent years, researchers have built several platforms for full-duplex wireless communications.
Haoyang Wu +8 more
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Quantum Full-Duplex Communication
IEEE Journal on Selected Areas in Communications, 2023Fakhar Zaman +4 more
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On the performance of full duplex wireless networks
2013 47th Annual Conference on Information Sciences and Systems (CISS), 2013Half duplex radios use two separate frequency bands to enable simultaneous transmission and reception. Recently, full duplex radio that allows a wireless node to transmit and receive simultaneously in one frequency band was proposed. We propose a MAC protocol for full duplex radio networks, FDMAC, which is a simple and efficient protocol compatible ...
Sanghoon Kim, Wayne E. Stark
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