David Tse

TL;DR: The Gaussianity justifies the use of single-user Gaussian codes for CDMA systems with linear MMSE receivers, and implies that from the viewpoints of detection and channel capacity, signal-to-interference ratio (SIR) is the key parameter that governs the performance of the MMSE receiver in a CDMA system.

TL;DR: Prism, a new proof-of-work blockchain protocol, which can achieve 1) security against up to 50% adversarial hashing power; 2) optimal throughput up to the capacity C of the network; 3) confirmation latency for honest transactions proportional to the propagation delay D; and eventual total ordering of all transactions.

TL;DR: While the standard Amplify-Forward protocol performs very poorly in this regime, a modified version of this protocol is optimal and achieves the outage capacity of the network and can be achieved without a priori channel knowledge at the receivers.

TL;DR: A new outer bound to the capacity region of a certain class of interference channels is proved, and the gap between it and the Han-Kobayashi inner bound is quantified.

TL;DR: This work studies the signal-to-interference performance of linear multiuser receivers in random environments, where signals from the users arrive in "random directions", and shows that for both the decorrelator and the minimum mean-square error (MMSE) receiver, the variance of the Sir distribution decreases like 1/N, and the SIR distribution is asymptotically Gaussian.