Results 271 to 280 of about 1,066,790 (316)
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On wideband broadcast channels
Proceedings. 1998 IEEE International Symposium on Information Theory (Cat. No.98CH36252), 2002We study the capacity regions of various broadband degraded broadcast channels including the degraded Poisson broadcast channel and the degraded very-noisy broadcast channel. It is shown that in the absence of dark current the capacity region of the degraded Poisson broadcast channel is achievable with a simple time-sharing strategy, and an analogous ...
A. Lapidoth, I.E. Telatar, R. Urbanke
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IEEE Transactions on Computers, 1991
Using notation consistent with the Estelle ISO 9074 International Standard, the syntax and formal semantics for a broadcast channel are presented. These semantics make precise the meaning of an intuitive concept and additionally are compatible with those of the current Estelle FDT (formal description technique).
Samuel C. Chamberlain, Paul D. Amer
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Using notation consistent with the Estelle ISO 9074 International Standard, the syntax and formal semantics for a broadcast channel are presented. These semantics make precise the meaning of an intuitive concept and additionally are compatible with those of the current Estelle FDT (formal description technique).
Samuel C. Chamberlain, Paul D. Amer
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2012 50th Annual Allerton Conference on Communication, Control, and Computing (Allerton), 2012
Asymmetric Broadcast Channels (ABCs) are of practical importance due to the physical differences between Broadcast Channels' (BCs') sub-channels in reality. In this paper, several classes of ABCs are studied and various inner and outer bounds on their capacity regions are given.
Saeed Hajizadeh, Ghosheh Abed Hodtani
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Asymmetric Broadcast Channels (ABCs) are of practical importance due to the physical differences between Broadcast Channels' (BCs') sub-channels in reality. In this paper, several classes of ABCs are studied and various inner and outer bounds on their capacity regions are given.
Saeed Hajizadeh, Ghosheh Abed Hodtani
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MIMO Broadcast Channels with Channel Estimation
2007 IEEE International Conference on Communications, 2007We consider a multi-user MIMO downlink where the transmitter has only estimates of the channel while the receivers have perfect channel information. The impact of channel estimation error on the sum rate is studied. It is shown that the sum rate saturates due to the inaccurate channel information.
Jun Shi 0001, Minnie Ho
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IEEE Transactions on Information Theory, 1972
We introduce the problem of a single source attempting to communicate information simultaneously to several receivers. The intent is to model the situation of a broadcaster with multiple receivers or a lecturer with many listeners. Thus several different channels with a common input alphabet are specified.
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We introduce the problem of a single source attempting to communicate information simultaneously to several receivers. The intent is to model the situation of a broadcaster with multiple receivers or a lecturer with many listeners. Thus several different channels with a common input alphabet are specified.
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On wide-band broadcast channels
IEEE Transactions on Information Theory, 2003Several models of wide-band broadcast communication scenarios are studied with an emphasis on conditions under which, as the bandwidth tends to infinity, time sharing is asymptotically optimal. The models include the Gaussian channel, the Poisson channel, the "very noisy" channel, and the average-power limited fading channel.
Lapidoth, Amos +2 more
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Comments on broadcast channels
IEEE Transactions on Information Theory, 1998Summary: The key ideas in the theory of broadcast channels are illustrated by discussing some of the progress toward finding the capacity region. The capacity region is still unknown.
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Distributed broadcast channel access
Computer Networks (1976), 1979Abstract This paper presents a general approach to sharing a broadcast channel among multiple processors. There are two components to the problem of sharing a single resource: (1) How to specify the usage pattern of the resource; and (2) How to restrict access to the resource so that the specified usage pattern can be realized.
Aloysius K. Mok, Steve Ward
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Trellis precoding for the broadcast channel
GLOBECOM'01. IEEE Global Telecommunications Conference (Cat. No.01CH37270), 2002This paper considers the vector Gaussian broadcast channel where a single transmitter with multiple antennas sends independent information to multiple receivers. An achievable rate region is derived by decomposing the broadcast channel into a series of single-user channels with non-causal side information.
Wei Yu 0001, John M. Cioffi
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Broadcast-relay-broadcast channels
2010 Conference Record of the Forty Fourth Asilomar Conference on Signals, Systems and Computers, 2010In this paper, we study the achievable rate regions of broadcast-relay-broadcast channels. The source broadcasts information to the users. A number of parallel relays are used to assist users. Each relay receives information from the source and forwards information to users. The relays also broadcast the forwarded information to all users.
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