Muryong Kim

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We derive inner and outer bounds on the capacity region for a class of three-user partially connected interference channels. We focus on the impact of topology, interference alignment, and interplay between interference and noise. The representative channels we consider are the ones that have clear interference alignment gain. For these channels, Z-channel(More)
This paper presents a novel retransmission strategy for communication networks based on index coding. The particular example of OFDMA downlink networks is taken to illustrate its efficacy. The benefits and challenges in using index coding as a transmission strategy are highlighted. The paper concludes with characterization of expected index coding gain in(More)
In this paper, we consider a parallel relay network where two relays cooperatively help a source transmit its message to a destination. We assume the source and the destination nodes are equipped with multiple antennas. Three basic schemes and their achievable rates are studied: Decode-and-Forward (DF), Amplify-and-Forward (AF), and Compress-and-Forward(More)
We develop achievable sum rate expressions for the Gaussian X channel at finite SNR using layered lattice coding with interference alignment. For different regimes of channel parameter h, we consider different decoding strategies including successive decoding and compute-and-forward decoding. For some regimes of h, we characterize the sum-rate capacity to(More)
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