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- Hua Yu Sun, Lynn E Dobrunz
- The Journal of neuroscience : the official…
- 2006

Target cell-specific differences in short-term plasticity have been attributed to differences in the initial release probability of synapses. Using GIN (GFP-expressing inhibitory neurons) transgenic mice that express enhanced green fluorescent protein (EGFP) in a subset of interneurons containing somatostatin, we show that Schaffer collateral synapses onto… (More)

- Hua Sun, Syed Ali Jafar
- IEEE Transactions on Information Theory
- 2016

In the private information retrieval (PIR) problem, a user wishes to retrieve, as efficiently as possible, one out of <inline-formula> <tex-math notation="LaTeX">$K$ </tex-math></inline-formula> messages from <inline-formula> <tex-math notation="LaTeX">$N$ </tex-math></inline-formula> non-communicating databases (each holds all <inline-formula> <tex-math… (More)

- Hua Sun, Chunhua Geng, Tiangao Gou, Syed Ali Jafar
- 2012 IEEE International Symposium on Information…
- 2012

We show that an M × N user MIMO X network with A antennas at each node has A (MN/M+N-1) degrees of freedom (DoF), thus settling the spatial scale invariance conjecture (scaling the number of antennas at each node by a constant factor will scale the total DoF by the same factor) for this class of networks. The previously known best general DoF inner… (More)

- Hua Sun, Chunhua Geng, Syed Ali Jafar
- 2013 IEEE International Symposium on Information…
- 2013

The topological interference management problem refers to the study of the capacity of partially connected linear (wired and wireless) communication networks with no channel state information at the transmitters (no CSIT) beyond the network topology, i.e., a knowledge of which channel coefficients are zero (weaker than the noise floor in the wireless case).… (More)

- Hua Sun, Syed Ali Jafar
- ArXiv
- 2016

Private information retrieval (PIR) is the problem of retrieving as efficiently as possible, one out of K messages from N non-communicating replicated databases (each holds all K messages) while keeping the identity of the desired message index a secret from each individual database. The information theoretic capacity of PIR (equivalently, the reciprocal of… (More)

- Hua Yu Sun, Susan A Lyons, Lynn E Dobrunz
- The Journal of physiology
- 2005

Although it is presynaptic, short-term plasticity has been shown at some synapses to depend upon the postsynaptic cell type. Previous studies have reported conflicting results as to whether Schaffer collateral axons have target-cell specific short-term plasticity. Here we investigate in detail the short-term dynamics of Schaffer collateral excitatory… (More)

- Chenwei Wang, Hua Sun, Syed Ali Jafar
- 2012 IEEE International Symposium on Information…
- 2012

We explore the degrees of freedom (DoF) of the K >; 3 user M<sub>T</sub> × M<sub>R</sub> MIMO Gaussian interference channel where each transmitter is equipped with M<sub>T</sub> and each receiver is equipped with M<sub>R</sub> antennas. Expressing the DoF characterization as a function of the ratio γ = M/N, where M = min(M<sub>T</sub>,… (More)

- Chunhua Geng, Hua Sun, Syed Ali Jafar
- IEEE Transactions on Information Theory
- 2014

In a K-user Gaussian interference channel, it has been shown that if for each user the desired signal strength is no less than the sum of the strengths of the strongest interference from this user and the strongest interference to this user (all values in decibel scale), then treating interference as noise (TIN) is optimal from the perspective of… (More)

- Hua Sun, Syed Ali Jafar
- GLOBECOM Workshops
- 2016

—Private information retrieval (PIR) is the problem of retrieving as efficiently as possible, one out of K messages from N non-communicating replicated databases (each holds all K messages) while keeping the identity of the desired message index a secret from each individual database. Symmetric PIR (SPIR) is a generalization of PIR to include the… (More)

- Hua Sun, Soon Xin Ng, Lajos Hanzo
- VTC Fall
- 2012

— A Turbo Trellis-Coded Modulation (TTCM) aided superpo-sition modulation scheme is conceived for a Decode-and-Forward (DAF) based cooperative communication system. More specifically, two source nodes communicate simultaneously with the same destination node via a relay node. Superposition modulation is invoked at the relay node in order to combine and… (More)