Nguyen N. Tran

Learn More
3911 demonstrating their versatility and effectiveness as high-performance channel codes for mobile communications. A digital fountain approach to asynchronous reliable multicast, " IEEE J. Factor graphs and the sum–product algorithm, " IEEE Trans. Design of capacity-approaching irregular low-density parity-check codes, " IEEE Trans. Inf. Design of(More)
Fig. 4. Performance comparison. (a) Final value of the metrics per factor μ i. (b) Final value of the metrics per n. protocol stack. CTC is able to distributively and asynchronously exploit available environmental and topological awareness and better allocate resources without significant overhead. Depending on the utility functions employed by CTC(More)
—Closed-form expressions for ergodic capacity of repetition-based cooperative networks under adaptive transmission with selection combining are derived. According to the changing channel conditions, the source adapts its rate and/or power level while the relays simply amplify and then forward the received signals. Specifically, three different adaptive(More)
Optimal training design and channel estimation for spatially correlated multiuser multi-input multi-output with orthogonal frequency-division multiplexing (MIMO-OFDM) systems is still an open research topic of great interest. This study first applies tractable semi-definite programming (SDP) to obtain the optimal training signal for the general case of(More)
This paper investigates orthogonal space-time block code (OSTBC) transmission for multiple-input multiple-output (MIMO) amplify-and-forward (AF) relaying networks composed of one source, K relays, and one destination and with M-ary frequency-shift keying (FSK) modulation. A non-coherent detection scheme is proposed and analyzed in a situation where the(More)
Conditional mutual information (CMI) analysis and precoding design for generally correlated wireless multi-hop multi-input multi-output (MIMO) channels are presented in this paper. Although some particular scenarios have been examined in existing publications, this paper investigates a generally correlated transmission system having spatially correlated(More)
This paper studies the bit error rate (BER) performance of an adaptive decode-and-forward (DF) relaying scheme for a cooperative wireless network operating on independent and identically distributed (i.i.d.) or independent and non-identically distributed (i.n.d.) Rayleigh fading channels. The considered network is with one source, K relays, and one(More)
  • 1