Results 161 to 170 of about 100,223 (210)
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Monostatic MIMO Backscatter Communications
IEEE Journal on Selected Areas in Communications, 2020Backscatter communications have two major antenna configurations: the bistatic configuration, in which the reader employs two different sets of antennas to transmit and receive, and the monostatic configuration, in which the reader employs one set of antennas for both transmitting and receiving.
Chen He +4 more
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Asynchronous Polarized Cooperative MIMO Communication
VTC Spring 2009 - IEEE 69th Vehicular Technology Conference, 2009In cooperative wireless network, the users exploit spatial diversity by cooperating with each other. This alleviates the detrimental effects of fading and offers reliable data transfer. In this paper, we present a novel asynchronous cooperative multi-input multi-output (MIMO) communication scheme in the presence of polarization diversity which does not
Sohaib, Sarmad, So, Daniel K C
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2021
In this chapter, we will discuss how the performance will be in RIS-aided MIMO communications. In Sect. 2.1, we consider the physical constraint of RIS, where the number of the phase shift for each element is limited. In Sect. 2.2, we consider how many reflective elements of the RIS can offer an acceptable data rate.
Hongliang Zhang +3 more
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In this chapter, we will discuss how the performance will be in RIS-aided MIMO communications. In Sect. 2.1, we consider the physical constraint of RIS, where the number of the phase shift for each element is limited. In Sect. 2.2, we consider how many reflective elements of the RIS can offer an acceptable data rate.
Hongliang Zhang +3 more
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UWA massive MIMO communications
OCEANS 2015 - MTS/IEEE Washington, 2015Underwater acoustic (UWA) channels are characterized by low availability of bandwidth, large propagation delays and fast varying multipaths. The fast variation of multipaths, in particular, hampers the bandwidth efficiency of UWA channels, as a significant percentage of transmission resources should be allocated to pilots. The problem magnifies further
Amir Aminjavaheri +1 more
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2012
The multiple input multiple output (MIMO) technique provides the higher bit rate and the better reliability in wireless systems. These advantages are achieved by designing appropriate apace-time codes that provide diversity improvement, spatial multiplexing gain, or a trade-off between diversity order and spatial multiplexing.
Abbas Mohammadi, Fadhel M. Ghannouchi
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The multiple input multiple output (MIMO) technique provides the higher bit rate and the better reliability in wireless systems. These advantages are achieved by designing appropriate apace-time codes that provide diversity improvement, spatial multiplexing gain, or a trade-off between diversity order and spatial multiplexing.
Abbas Mohammadi, Fadhel M. Ghannouchi
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Asynchronous Cooperative MIMO Communication
2007 5th International Symposium on Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks and Workshops, 2007We consider a cluster-based cooperative transmission scheme where the source node and destination node form clusters for transmission. Instead of using perfect synchronization technique, we assume the cooperative transmission is asynchronous. Each member in transmitting cluster relays signal to the receiving cluster after obtaining information from ...
Hsin-Yi Shen, Shivkumar Kalyanaraman
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