The optimization between the average received power and the theoretically achievable average channel capacity per user (in the Shannon sense) of a hybrid direct-sequence/fast frequency hopping codedivision multiple-access (DS/FFH-CDMA) cellular system, when operating in a Rayleigh fading environment, is presented. The analysis leads to a novel-closed form expression for the optimal average rece...

This paper contains a construction for independent sets in the powers of odd cycles. It follows from this construction that the limit as n goes to infinity of n+ 1/2−Θ(C2n+1) is zero, where Θ(G) is the Shannon capacity of the graph G.

This paper studies identification of systems in which the system output is quantized, transmitted through a digital communication channel, and observed afterwards. The concept of the CR Ratio is introduced to characterize impact of communication channels on identification. The relationship between the CR Ratio and Shannon channel capacity is discussed. Identification algorithms are further deve...

This paper contains a construction for independent sets in the powers of the complements of odd cycles. In particular, we show that α ( C 2 2n+3 ) ≥ 22n + 1. It follows that for n ≥ 0 we have Θ(C2n+3) > 2, where Θ(G) denotes the Shannon capacity of graph G.

A single server queue can be viewed as a communication channel where information is encoded into the times of arrivals of packets into the queue and needs to be decoded from the departure times. Such channels are of interest in computer security, since their existence provides a way to leak information across security boundaries in a covert way. Anantharam and Verdu (1994) determined that the S...

Preface The reliable transmission of information bearing signals over a noisy communication channel is at the heart of what we call communication. Information theory—founded by Claude E. Shannon in 1948—provides a mathematical framework for the theory of communication; it describes the fundamental limits to how efficiently one can encode information and still be able to recover it with negligib...

Introduction. – A common problem in modern mobile telecommunication systems is that the strength of the signal varies over time as a result of e.g. the motion of the receiver with respect to the source and the varying number of obstacles that shadow the signal over time. Channels describing communication of attenuated signals are termed ‘fading channels’. Fading channels are modeled by finite-s...

Shannon’s monumental 1948 work laid the foundations for the rich fields of information andcoding theory. The quest for efficient coding schemes to approach Shannon capacity has occupiedresearchers ever since, with spectacular progress enabling the widespread use of error-correctingcodes in practice. Yet the theoretical problem of approaching capacity arbitrarily closely withpoly...

The capacity of an ad hoc wireless network is determined by its topology and the resulting signal-to-interference ratio experienced by the various wireless links that interconnect different nodes. The Shannon capacity theorem is the fundamental result that relates the link bandwidth and the signal-tointerference ratio (SIR) experienced by a link. The link capacity in turn defines the upper boun...

Shannon’s monumental 1948 work laid the foundations for the rich fields of information and coding theory. The quest for efficient coding schemes to approach Shannon capacity has occupied researchers ever since, with spectacular progress enabling the widespread use of error-correcting codes in practice. Yet the theoretical problem of approaching capacity arbitrarily closely with polynomial compl...