Results 281 to 290 of about 1,066,790 (316)

Beaconing in MIMO Broadcast Channels

Proceedings. (ICASSP '05). IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005., 2006
There is a need to broadcast identical information to multiple users in a network. Examples include sending a beacon signal from an UAV to multiple sensors in a surveillance region and, in the context of ad hoc networks, multicasting. This paper studies the information theoretic aspects of multiple-input multiple-output (MIMO) beaconing where multiple ...
Michael J. Gans, Biao Chen
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Decomposing the MIMO broadcast channel

2010 48th Annual Allerton Conference on Communication, Control, and Computing (Allerton), 2010
The problem of transmitting a common message over a multiple-input multiple-output (MIMO) Gaussian broadcast channel with multiple receivers is well understood in terms of capacity. Nevertheless, existing optimal (capacity-achieving) schemes for this scenario require joint decoding of the multiple streams transmitted, entailing high computational ...
Anatoly Khina, Yuval Kochman, Uri Erez
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Parallel relay broadcast channels

2010 IEEE International Symposium on Information Theory, 2010
In this paper, we study the achievable rate regions of parallel relay broadcast channels. We present two system models, the parallel unshared-relay broadcast channel and the parallel shared-relay broadcast channel. In the first system, each relay node is peculiar to one of the users and does not assist any other user.
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Broadcast channels with confidential messages

IEEE Transactions on Information Theory, 1978
Given two discrete memoryless channels (DMC's) with a common input, it is desired to transmit private messages to receiver 1 rate R_{1} and common messages to both receivers at rate R_{o} , while keeping receiver 2 as ignorant of the private messages as possible.
CSISZAR I., KORNER, JANOS
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Broadcast Channel Simulation

2023 IEEE International Symposium on Information Theory (ISIT), 2023
Cao, Michael X., Ramakrishnan, Navneeth, Berta, Mario, Tomamichel, Marco   +3 more
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The Throughput of Packet Broadcasting Channels

IEEE Transactions on Communications, 1977
Packet broadcasting is a form of data communications architecture which can combine the features of packet switching with those of broadcast channels for data communication networks. Much of the basic theory of packet broadcasting has been presented as a byproduct in a sequence of papers with a distinctly practical emphasis.
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Control and Improvement of the Broadcast Channel

1977
The optimal control of the broadcast channel requires the knowledge of a non-measurable state variable, the number N of blocked terminals. After presenting some simulation results with N assumed to be known, we propose an adaptive control policy which we compare with the optimal control using a least squares estimator of N.
Banh Tri An, Erol Gelenbe
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The capacity of a class of broadcast channels

IEEE Transactions on Information Theory, 1979
The capacity region is established for those discrete memoryless broadcast channels p(y,z \mid x) for which I(X;Y) \geq I(X;Z) holds for all Input distributions. The capacity region for this class of channels resembles the capacity region for degraded message sets considered by Korner and Marton.
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Precoder Design for MIMO Broadcast Channels

2005 Australian Communications Theory Workshop, 2005
This paper considers precoder designs in downlink MIMO broadcast channels (BC). A preceding scheme that is analog to the MMSE decision feedback equalizer in the uplink MIMO multiple access channels is first introduced. The proposed scheme can asymptotically achieve the sum-capacity of MIMO-BC at high SNRs. At medium SNRs, its achievable sum capacity is
Xun Shao, Jinhong Yuan, Predrag B. Rapajic   +2 more
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Gaussian Broadcast Channel With Feedback

IEEE Transactions on Information Theory, 2008
For a Gaussian broadcast channel, it is known that: the capacity region in general is enlarged in the presence of feedback from all the receivers; and in the physically degraded case, feedback does not enlarge the capacity region. It is shown that the capacity region of a two-user Gaussian broadcast channel (GBC) is enlarged even when the feedback is ...
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