Results 261 to 270 of about 473,739 (299)

Zero-error capacity for finite state channels with feedback and channel state information

2008 IEEE International Symposium on Information Theory, 2008
In this paper, we study the zero-error capacity for finite state channel with feedback when channel state information is known to both the transmitter and the receiver. We prove that the zero-error capacity in this case can be obtained through the solution of a dynamic programming problem. Exact answers are also given for certain cases.
Lei Zhao, Haim H. Permuter
openaire   +1 more source

Cooperative relay-broadcast channels with causal Channel State Information

2009 IEEE International Symposium on Information Theory, 2009
In this paper, we consider partially and fully cooperative state-dependent relay broadcast channels with perfect causal Channel State Information (CSI). For these two channels, we study three different situations: 1) both the source and the relay nodes have access to perfect CSI, 2) perfect CSI is only known to the relay nodes, 3) perfect CSI is only ...
Reza Khosravi-Farsani, Bahareh Akhbari, Mahtab Mirmohseni, Mohammad Reza Aref   +3 more
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Optimal wireless multiuser channels with imperfect channel state information

2012 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2012
This paper considers algorithms for optimal transmission over wireless multiuser channels where the transmitter has access to imperfect channel state information (CSI). We focus on downlink orthogonal frequency division multiple access and multiuser uplink random access.
Yichuan Hu, Alejandro Ribeiro
openaire   +1 more source

On fading broadcast channels with partial channel state information at the transmitter

2012 International Symposium on Wireless Communication Systems (ISWCS), 2012
The two user multiple-input multiple-output (MIMO) broadcast channel is studied in which the channel from one of the receivers is known instantaneously and perfectly at the transmitter, whereas the channel from the other receiver is known in a delayed manner.
Ravi Tandon, Mohammad Ali Maddah-Ali, Antonia M. Tulino, H. Vincent Poor, Shlomo Shamai   +4 more
openaire   +2 more sources

Quantifying the repeatability of wireless channels by quantized channel state information

2016 IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM), 2016
Repeatability is the prerequisite for scientific evaluation of wireless measurements. However, in real-world scenarios, the channel always slightly changes with time as, for example, trees move in the wind. In this paper, we propose a methodology that uses quantized channel state information and a technique similar to non-substractive SNR-dithering to ...
Martin Lerch, Sebastian Caban, Erich Zöchmann, Markus Rupp   +3 more
openaire   +1 more source

Performance of MIMO Channel Models with Channel State Information at the Transmitter

IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference, 2008
The performance benefits of multiple input multiple output (MIMO) antenna systems in increasing the throughput of a communication system depends on the type and quality of the information sent to the transmitter. In this paper, we examine the loss in throughput due to a delay in receiving information at the transmitter.
Leslie C. Wood, William S. Hodgkiss
openaire   +1 more source

Impact of channel state information on the stability of cognitive shared channels

2012 Proceedings IEEE INFOCOM, 2012
In this paper, we consider the problem of calculating the stability region of a two-user cognitive shared channel where the secondary (lower priority) user, whose channel is modeled as a two-state Gilbert-Elliott channel, utilizes the channel state information to adapt its transmission probabilities accordingly. The analysis also takes into account the
Sastry Kompella, Gam D. Nguyen, Jeffrey E. Wieselthier, Anthony Ephremides   +3 more
openaire   +1 more source

Throughput in A Cooperative Network and Channel State Information

Wireless Personal Communications, 2015
Cooperative communications greatly enhance the point-to-point link capability to against channel fading, and such performance gain is expected to large wireless ad hoc networks. However, current cooperative networking is based on ideal assumptions of completely known network information and centralized optimization, which is practically infeasible to ...
Yi-Nung Yeh, Kwang-Cheng Chen, Yi-Chi Chen   +2 more
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Symmetric Gaussian interference channel with state information

2011 49th Annual Allerton Conference on Communication, Control, and Computing (Allerton), 2011
In this paper, we study the state-dependent symmetric Gaussian interference channel, where the additive Gaussian state is non-causally known at both transmitters but unknown to either of the receivers. We apply the coding scheme in [5] with different dirty paper coding parameters.
Lili Zhang 0001, Tie Liu 0002, Shuguang Cui   +2 more
openaire   +1 more source

On network coding with finite channel state information

2011 8th International Symposium on Wireless Communication Systems, 2011
We study network coding for wireless networks with finite channel state information (CSI) at intermediate nodes (relays). Based on the CSI of the relay-sink channels, we adapt the network codes at the relays. For a specific network with two sources, four relays and two sinks, the analytic results show that one bit CSI of all relay-sink channels (global
Ming Xiao 0001, Mikael Skoglund
openaire   +1 more source