Results 261 to 270 of about 453,959 (303)

Capacity of the Multiple-Input, Multiple-Output Poisson Channel

Proceedings IEEE International Symposium on Information Theory,, 2003
We examine the Shannon capacity of the single-user, multiple-input, multiple-output (MIMO) Poisson channel with peak and average transmit power constraints. We derive upper and lower bounds on the capacity that coincide in a number of special cases.
S.M. Haas, J.H. Shapiro
openaire   +1 more source

On the capacity of multiple input multiple output broadcast channels

2002 IEEE International Conference on Communications. Conference Proceedings. ICC 2002 (Cat. No.02CH37333), 2003
We consider a multiuser multiple input multiple output (MIMO) Gaussian broadcast channel (BC), where the transmitter and receivers have multiple antennas. Since the MIMO broadcast channel is in general a non-degraded broadcast channel, its capacity region remains an unsolved problem.
Sriram Vishwanath, Nihar Jindal, Andrea J. Goldsmith   +2 more
openaire   +1 more source

Macrocell multiple-input multiple-output system analysis

IEEE Transactions on Wireless Communications, 2006
We develop a semi-deterministic semi-stochastic channel model for the multiple-input multiple-output (MIMO) system under the macrocell environment with local-to-mobile and local-to-base scatterers. We show that employing closely-spaced antennas (e.g., phased array) at the base station is capable of achieving diversity via the local-to-base scatterers ...
Gang Shi, Arye Nehorai
openaire   +1 more source

Digital prefiltering for multiple-input, multiple-output receivers

ICC 2001. IEEE International Conference on Communications. Conference Record (Cat. No.01CH37240), 2002
The whitened matched filter (WMF) and the finite-length feed-forward filter (FFF) of a minimum mean-squared error decision feedback equalizer are compared for use as digital prefilters in a multiple-input, multiple-output (MIMO) receiver front-end. For systems that are single-input, single-output (SISO), existing literature has shown the FFF approaches
Casey L. Miller, Desmond P. Taylor
openaire   +1 more source

Polarization characteristics of multiple-input multiple-output channels

2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, 2008
In this paper, we investigate the polarization characteristics of the multiple-input multiple-output (MIMO) channels. The cross polarization discrimination (XPD) is found to change over time, while its variation in frequency domain is relatively small. The probability density function (PDF) of the XPD follows a Gaussian distribution.
Lei Jiang 0005, Lars Thiele, Armin Brylka, Stephan Jaeckel, Volker Jungnickel   +4 more
openaire   +1 more source

Verification of multiple input/multiple output business processes

Proceedings of the 2004 IEEE International Conference on Information Reuse and Integration, 2004. IRI 2004., 2005
In many business process modelling situations using Petri nets, the resulting model does not have a single input place and a single output place. Therefore, the correctness of the model cannot be assessed within the existing frameworks, which are devised for workflow nets - a particular class of Petri nets with a single input place and a single output ...
Costin Badica, Chris Fox
openaire   +1 more source

Constrained detection for multiple-input multiple-output channels

GLOBECOM '05. IEEE Global Telecommunications Conference, 2005., 2005
We develop a family of constrained detectors for multiple-input multiple-output (MIMO) channels by relaxing the maximum likelihood (ML) detection problem. Real constrained linear detectors and decision feedback detectors are proposed for real constellations by forcing the relaxed solution to be real.
Tao Cui, Chintha Tellambura, Yue Wu
openaire   +1 more source

Linear receivers for the multiple-input multiple-output multiple-access channel

IEEE Transactions on Communications, 2006
We consider a multiuser multiple-input multiple-output (MIMO) communication system using code-division multiple access (CDMA) and multiuser detection to discriminate the different users. Our focus is on the CDMA uplink of a frequency-nonselective Rayleigh fading channel.
Alessandro Nordio, Giorgio Taricco
openaire   +2 more sources

Multiple Input Multiple Output (MIMO) Antennas

2023
The advancement of antennas that can access high data speeds, and have higher gain, is largely responsible for the advancements in wireless technology. One such antenna called the multiple input multiple output (MIMO). This antenna has attracted the utmost attention of the researchers owing to its features like higher capacity, increased data rate, low
Anindita Bhattacharjee, Anirban Karmakar, Anuradha Saha   +2 more
openaire   +1 more source

Multiple integration of input and output in the cortex

NeuroReport, 1996
We inserted microelectrodes in eye movement-evoking cortices (EMECs) of cats and examined whether neurones in the EMECs received sensory input from guide signals and fired prior to saccades. The five EMECs were the medial wall of the hemisphere under the cruciate sulcus, the medical and lateral bank of the presylvian sulcus, the fundus of the coronal ...
Y, Tamai, A, Kimura
openaire   +2 more sources