One of the most surprising recent results in quantum Shannon theory is the superactivation of the quantum capacity of a quantum channel. This phenomenon has its roots in the extreme violation of additivity of the channel capacity and enables to reliably transmit quantum information over zerocapacity quantum channels. In this work we demonstrate a similar effect for the classical capacity of a q...

This paper addresses the problem of designing parallel concatenated nonlinear trellis codes (PC-NLTCs). These codes have advantages over binary linear turbo codes for higher-order modulations or in applications where a non-uniform distribution of ones and zeros in the output is optimal. Two applications are considered in this work. First, this paper shows that for higher-order modulations using...

M -ary signal transmission over AWGN channel with additive Q-ary interference where the sequence of i.i.d. interference symbols is known causally at the transmitter is considered. Shannon’s theorem for channels with side information at the transmitter is used to formulate the capacity of the channel. It is shown that by using at most MQ − Q + 1 out of M Q inputs of the associated channel, the c...

In this paper, channel capacity of multiple-input multiple-output wireless local area network (MIMO-WLAN) systems with single co-channel interference (CCI) is calculated. A ray-tracing approach is used to calculate the channel frequency response, which is further used to calculate the corresponding channel capacity. The ability to combat CCI for the MIMO-WLAN simple uniform linear array (ULA) a...

Tin dioxide (SnO2 ) has attracted much attention in lithium-ion batteries (LIBs) due to its abundant source, low cost, and high theoretical capacity. However, the large volume variation, irreversible conversion reaction limit its further practical application in next-generation LIBs. Here, a novel solvent-free approach to construct uniform metal-organic framework (MOF) shell-derived carbon conf...

Polar codes are the first class of constructive channel codes achieving the symmetric capacity of the binary-input discrete memoryless channels. But the corresponding code length is limited to the power of two. In this paper, we establish a systematic framework to design the rate-compatible punctured polar (RCPP) codes with arbitrary code length. A new theoretic tool, called polar spectra, is p...

This article describes the role states could play in a national effort to measure and monitor the public health safety net. The authors developed a data collection framework using information from five states on two components of the safety net: structure and demand. Because states are the primary vehicle for access expansions and programs to care for the poor, the authors suggest that they be ...

In this paper Multiple Input Multiple Output (MIMO) techniques for Universal Mobile Telecommunication System (UMTS) analysis is presented. To simulate the radio channel the COST 259 directional channel model (DCM) is used for macro and microcell scenarios, as defined by the Third Generation Partnership Project (3GPP). Values of capacity and Bit Error Rate (BER) are obtained for different MIMO c...

In this paper it is shown that if μ is an n-dimensional Ahlfors-David regular measure in R which satisfies the so-called weak constant density condition, then μ is uniformly rectifiable. This had already been proved by David and Semmes in the cases n = 1, 2 and d − 1, and it was an open problem for other values of n. The proof of this result relies on the study of the n-uniform measures in R. I...