We analyze a task in which classical and quantum messages are simultaneously communicated via noisy channel, assisted with limited amount of shared entanglement. derive direct converse bounds for the one-shot capacity region, represented by smooth conditional entropies error tolerance. The proof is based on randomized partial decoupling theorem, generalization theorem. two match asymptotic limi...

Abstract Coherent rake reception of direct sequence code division multiple access (DS-CDMA) signals requires accurate channel estimation in a frequency-selective fading channel. In this paper, we study the channel estimation method using FFT/IFFT for coherent DS-CDMA mobile radio using the code-multiplexed pilot structure. This channel estimation method can provide a good tracking capability ag...

We consider a Gaussian interference channel with independent direct and cross link channel gains, each of which is independent and identically distributed across time. Each transmitter-receiver user pair aims to maximize its longterm average transmission rate subject to an average power constraint. We formulate a stochastic game for this system in three different scenarios. First, we assume tha...

A key question for Internet commerce is the nature of competition with traditional brick-and-mortar retailers. Although traditional retailers vastly outsell Internet retailers in most product categories, research on Internet retailing has almost entirely neglected this fundamental dimension of competition. How and where can Internet retailers win this battle? This paper attempts to answer these...

We introduce a counter-flow turbulent channel configuration, amenable to simulation and modeling. It has periodic streamwise spanwise boundaries isothermal no-slip walls. A tangent hyperbolic forcing function drives the flow in opposite directions on upper lower halves of channel, forming an antisymmetric mean shear velocity profile. Compared conventional flows, is inflectional maximum turbulen...