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Träfflista för sökning "WFRF:(Tran Trung Nam) srt2:(2010-2014)"

Search: WFRF:(Tran Trung Nam) > (2010-2014)

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1.
  • Kim, Kyeong Jin, et al. (author)
  • Performance Analysis of Cognitive Spectrum-Sharing Single-Carrier Systems With Relay Selection
  • 2012
  • In: IEEE Transactions on Signal Processing. - : IEEE. - 1053-587X .- 1941-0476. ; 60:12, s. 6435-6449
  • Journal article (peer-reviewed)abstract
    • In this paper, we analyze the performance of cooperative spectrum sharing single-carrier (SC) relay systems. Taking into account the peak interference power at the primary user (PU) and the maximum transmit power at the secondary user (SU) network, two separate power allocation constraints are formed. For a two-hop decode-and-forward (DF) relaying protocol and two power allocation constraints, two relay selection schemes, namely, a full-channel state information (CSI)-based best relay selection (BRS) and a partial CSI-based best relay selection (PBRS), are proposed. The distributions of the end-to-end signal-to-noise ratios (e2e-SNRs) for the four cases are derived first, and then their outage probabilities and asymptotic outage probabilities are derived in closed-form. The derived asymptotic outage probabilities are utilized to see different diversity gains. Monte Carlo simulations have verified the derived diversity gains for the four different cases. We also present upper bounds on the ergodic capacities for two particular cases.
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2.
  • Tran, Nguyen Nam, et al. (author)
  • Training Design upon Mutual Information for Spatially Correlated MIMO-OFDM
  • 2010
  • Conference paper (peer-reviewed)abstract
    • Our goal in this paper is to address channel estimations for spatially correlated multiple-input multiple-output with orthogonal frequency-division multiplexing (MIMO-OFDM) system upon the conditional mutual information (CMI). The design of superimposed training signal by maximizing the channel CMI is fully investigated. First, the interior-point-method is employed to obtain the optimal superimposed training signals for the general case of channel correlations. In addition, two efficient approximate designs are also proposed by invoking Karush-Kuhn-Tucker condition for optimality of convex programming. The first approximate design is obtained by proposing a iterativebisection-procedure (IBP), while the second one is in “waterfilling” closed-form. Numerical results demonstrate the excellent performance of the proposed designs and give the connection between channel estimation error and mutual information.
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  • Result 1-2 of 2
Type of publication
conference paper (1)
journal article (1)
Type of content
peer-reviewed (2)
Author/Editor
Duong, Quang Trung (2)
Tran, Nguyen Nam (1)
Tran, Xuan Nam (1)
Kim, Kyeong Jin (1)
University
Blekinge Institute of Technology (2)
Language
English (2)
Research subject (UKÄ/SCB)
Engineering and Technology (2)

Year

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