Results 131 to 140 of about 824 (179)
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On Multiuser MIMO Multistream Transmission
IEEE Transactions on Vehicular Technology, 2009We present a system for multiuser multiple-input-multiple-output (MIMO) multistream downlink transmission, which employs covariance-based linear precoders at the transmitter and a minimum-mean-square-error (MMSE) equalizer at each receiver. Antennas of user equipment are arranged to receive different streams bound to this user.
Haixia Zhang 0001 +3 more
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Optimal Array size for Multiuser MIMO
2018 14th International Wireless Communications & Mobile Computing Conference (IWCMC), 2018This paper investigates the optimal number of antennas at a base station, in contrast to what has been accepted in the past: that increasing the number of antennas at base station always enhances performance. In this study, we show that increasing the number of antennas does not always improve the desired performance.
Khalid W. Hameed +5 more
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A Hierarchical Feedback Technique for Multiuser MIMO
2009 IEEE Wireless Communications and Networking Conference, 2009This paper proposes a hierarchical feedback technique to solve the problem of massive feedback overhead in multiuser (MU-) multiple-input-multiple-output (MIMO) transmission, which is a serious obstacle to the application of MU-MIMO in real systems, especially with a joint operation of multiuser scheduling and precoding.
Keying Wu, Hongwei Yang, Liyu Cai
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2012
Future Wireless Networks are expected to adopt multi-user multiple input multiple output (MU-MIMO) systems whose performance is maximized by making use of precoding at the transmitter. This chapter describes the recent advances in precoding design for MU-MIMO and introduces a new technique to improve the precoder performance.
Elsadig Saeid +2 more
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Future Wireless Networks are expected to adopt multi-user multiple input multiple output (MU-MIMO) systems whose performance is maximized by making use of precoding at the transmitter. This chapter describes the recent advances in precoding design for MU-MIMO and introduces a new technique to improve the precoder performance.
Elsadig Saeid +2 more
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Rate Region Combining in Multiuser MIMO
2006 IEEE International Symposium on Information Theory, 2006The concept of "information combing" is extended to multiple access schemes, where the receiver is equipped with multiple receive antennas. In particular, the connection of the respective rate region to that of the scalar MACs, which are present if the receive antennas are treated separately, is derived.
Robert F. H. Fischer, Johannes B. Huber
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Linear receivers for multiuser MIMO channels
Proceedings. (ICASSP '05). IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005., 2006We consider the use of multiple transmit and receive antennas (MIMO) in a wideband code-division multiple-access system with space-time coding. Using large-system asymptotic analyses, we examine the performance of linear receivers whereby multiuser detection and MIMO decoding are kept separate.
BIGLIERI E +2 more
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Line Encoding for Multiuser MIMO Downlink
IEEE Transactions on Vehicular Technology, 2011We investigate nonlinear precoding techniques for a multiuser multiple-input-multiple-output (MU-MIMO) downlink. When assuming full knowledge of the channel state information (CSI) at the transmitter, a vector perturbation (VP), based on sphere encoding, is a promising precoding scheme that approaches sum capacity while using a simple receiver. However,
Hyungjoon Song +2 more
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2001
Abstract : Communication systems with multiple antennas at both transmitter and receiver (i.e. MIMO systems) have shown considerable promise in providing high-rate high-quality wireless links. This talk will discuss implications of using MIMO systems in multiple-access networks.
H. Vincent Poor +2 more
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Abstract : Communication systems with multiple antennas at both transmitter and receiver (i.e. MIMO systems) have shown considerable promise in providing high-rate high-quality wireless links. This talk will discuss implications of using MIMO systems in multiple-access networks.
H. Vincent Poor +2 more
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On the capacity of multiuser MIMO networks with interference
IEEE Transactions on Wireless Communications, 2008Maximizing the total mutual information of multiuser multiple-input multiple-output (MIMO) systems with interference is a challenging problem. In this paper, we consider the power control problem of finding the maximum sum of mutual information for a multiuser network with mutually interfered MIMO links.
Jia Liu 0002 +4 more
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Making multiuser MIMO work for LTE
21st Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, 2010Underlining the viability of multiuser (MU) MIMO for future wireless communications as long term evolution (LTE), we propose in this paper a precoding strategy based on the low resolution LTE precoders which necessitates 2 bits feedback from the user equipment (UE).
Rizwan Ghaffar, Raymond Knopp
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