Results 261 to 270 of about 5,914 (307)
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Adaptive transmitting antenna arrays with feedback
IEEE Signal Processing Letters, 1994We address the problem of transmitting multiple cochannel signals from an antenna array to several receivers so that each receiver gets its intended signal with minimum crosstalk from the remaining signals. In addition to the usual "information" mode, we propose a "probing" mode during which probing signals received at the mobiles are fed back to the ...
Derek Gerlach, Arogyaswami Paulraj
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Transmit diversity and spatial multiplexing in four-transmit-antenna OFDM
IEEE International Conference on Communications, 2003. ICC '03., 2004This paper studies a practical design for achieving both spatial diversity and spatial multiplexing in an OFDM system with four transmit antennas. In a certain range of spectral efficiency, the proposed hybrid space-time block coding/multiple-input multiple-output (STBC/MIMO) design is found to be a good design choice based on performance and receiver ...
Xiangyang Zhuang +3 more
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Direct Transmit Antenna Selection for Transmit Optimized Spatial Modulation
2013 IEEE 78th Vehicular Technology Conference (VTC Fall), 2013To improve the performance of spatial modulation (SM) over correlated MIMO channels, transmit optimized spatial modulation (TOSM) has been proposed recently. It trades off traditional signal constellation diagrams with spatial constellation diagrams to minimize the average bit error probability (ABEP).
Xiping Wu, Marco Di Renzo, Harald Haas
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Transmit antenna selection for multiple antenna systems with stall avoidance
Computers & Electrical Engineering, 2017Overall performance of MIMO is improved by cross layer transmit antenna selection.Stalling of packets occurs in the receiver buffer when N-SAW is implemented.Implementing timer based stall avoidance mechanism results in packets being dropped.Larger packets increase latency while reducing the throughput and dropped packets.Increasing the number of SAW ...
Elizabeth M. Okumu, Mqhele E. Dlodlo
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A SPICE model of an antenna for transmitting
International Journal of Microwave and Wireless Technologies, 2014A SPICE model of an antenna for transmitting is proposed. This model allows for the calculation of the frequency-domain radiation fields for a range of frequencies in which the model is valid, it also allows for the direct calculation of the time-domain (TD) radiation fields for an arbitrary TD excitation signal, the spectrum of which should be within ...
Xiang Gao, Zhengwei Du
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2010 6th International Conference on Wireless Communications Networking and Mobile Computing (WiCOM), 2010
Two transmit antennas placed symmetrically for a linear cell downlink distributed antenna system with Alamouti space-time block coding over Rayleigh fading channels. For mobile station located in different places in the cell, which mode should be selected by base station from one transmit antenna or two transmit antennas?
Zhigang Li +4 more
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Two transmit antennas placed symmetrically for a linear cell downlink distributed antenna system with Alamouti space-time block coding over Rayleigh fading channels. For mobile station located in different places in the cell, which mode should be selected by base station from one transmit antenna or two transmit antennas?
Zhigang Li +4 more
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Capacity of transmitting antenna
2007 IEEE Antennas and Propagation Society International Symposium, 2007The capacity of transmitting antenna is discussed in this article based on information theory. Analytical upper bounds on the capacity of transmitting antenna have been obtained.
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Cloaking receiving and transmitting antennas: Theoretical aspects and applications
, 2016 In this contribution, we review our latest results about the unprecedented possibilities enabled by electromagnetic cloaking in antenna theory and applications.
Alessio Monti +2 more
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The Thick Tubular Transmitting Antenna
Radio Science, 1967The growing importance of electrically thick monopole antennas has suggested a re‐examination of the model used in the derivation of the integral equation for the current in tubular antennas. It is shown that when such an antenna is driven from a coaxial line in the usual manner, which maintains a field along a narrow circumferential region on the ...
Ronold W. P. King, Tai Tsun Wu
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Compact Medium Wave Transmitting Antennas
IEEE Transactions on Broadcasting, 2004Increasing land costs, ever more restrictive land use regulations and the public's impression that towers are aesthetically distasteful, have led to a continuing interest in physically small transmitting antennas for use by broadcasters operating in the 535-1705 kHz medium wave band.
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