The coding theorem is proved for the secret sharing communication system (SSCS) with two noisy channels, each of which is a broadcast channel characterized by P( y,z, Ix,), j = 1,2; it is assumed that the legitimate channel ( Xj + Y,) is less noisy than the wiretapped channel ( Xj --f Z,), The code (f, +) for the SSCS is defined by two mappings: (Xp,Xp)=f(SK,T) and s^=q5(Yp,YaNz) where 7’ is an...

Instructions: I expect you to work on the problems by yourself. You can refer to any textbook (or the technical literature in general), but not confer with any person. 1. Short Questions (a) How many bits are needed to specify a selection of k objects from n objects? (n and k are assumed to be known and the selection of k objects is unordered.) (b) Either prove that the following code is unique...

We study the effect of training method on the receiver bit error rate (BER) performance in constant envelope phase modulation schemes that are transmitted through flat fading channels. Here we propose a novel method for receiver training by sending information bits with unbalanced probabilities. We call this method implicit training and compare it with traditional (explicit) training scheme in ...

A recent result of the authors shows a so-called I-MMSE-like relationship that, for the two-user Gaussian interference channel, an I-MMSE relationship holds in the limit, as n → ∞, between the interference and the interfered-with receiver, assuming that the interfered-with transmission is an optimal point-to-point sequence (achieves the point-to-point capacity). This result was further used to ...

Using a two-channel model, we show that the number of closed-channel molecules in a twocomponent Fermi gas close to a Feshbach resonance is directly related to the derivative of the energy of the gas with respect to the inverse scattering length. We extract this quantity from the fixed-node Monte Carlo equation of state and we compare to the number of closed-channel molecules measured in the Ri...

Multicarrier Modulation (MCM) gains growing interests in high data rate communications for both wire and wireless environment. The channel estimation is a crucial aspect in MCM systems. A novel channel estimation algorithm [6] exploiting the channel information contained in the cyclic prefix outperforms the existing adaptive equalization scheme [Z]. In this paper theoretical analysis is carried...

INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY Unsteady Rotating MHD Free and forced Convection Flow in a Channel R.N Barik Department of Mathematics, Trident Academy of Technology, Infocity, Bhubaneswar-751024, Odisha, India [email protected] Abstract An analysis is made for transient, fully-developed MHD free and forced convection flow of a viscous, incompr...

In wireless cellular networks, a roaming mobile station (MS) is expected to move from one cell to another. In order to ensure that ongoing calls are not dropped while the owner mobile stations roam among cells, handoff calls may be admitted with a higher priority than newly generated calls. Predictive channel reservation (or pre-reservation) schemes allow the reservation of a channel for an ong...

This paper presents an Interleaver-Division Multiple Access (IDMA) based architecture with single-user decoding using parallel concatenated non-linear trellis codes (PC-NLTCs). These PC-NLTCs are designed specifically for the Z-Channel that arises in a multiple-user OR channel when each user treats the other users as noise. Over the OR Multiple Access Channel (OR-MAC) single-user decoding permi...

In this paper switch-and stay combining (SSC) receivers over Rayleigh fading channels are observed. The case of interference-limited system in the environment with multiple co-channel interferers is considered. The proposed analysis gives the brand new expression for evaluating the probability density function (pdf) of signal-to–interference (SIR) at the output of combiner. Based on this, the a...