Multiple access system for a vector disjunctive channel
This paper addresses the problem of constructing a multiple access sys- tem for a disjunctive vector channel, similar to multiuser channel without intensity information, as described in Chang S.C., Wolf J.K. On the T-User M-Frequency Noiseless Multiple-Access Channels with and without Intensity Information // IEEE Trans. Inform. Theory. 1981. V. 27. No 1. P. 41-48.. To solve this problem a signal-code construction based on the q-ary codes is proposed. It is shown that the proposed signal-code con- struction allows to obtain the asymptotic value of the total relative rate arbitrarily close to ln 2.
We consider a signal-code construction for a special class of multiple access system over vector-disjunctive channel when users transmit some vector of bits of finite length L. This construction is based on interleaved Reed-Solomon codes with collaborative decoding. The considered methods of encoding and decoding in one hand have acceptable complexity for a wide range parameters and in other one a decoding algorithm is able to correct significantly more collisions than bounded- distance decoder. We present some simulation results for relative sum-rate of interleaved Reed-Solomon and for frame error rate (FER) in the case of different number of active users and different code constructions. Simulation results we obtained allow us to conclude that our scheme has a good performance even for very short codes.
The volume contains proceedings of the XIII International symposium on problems of redundancy in information and control systems.
This book constitutes the refereed proceedings of the 5th International Workshop on Multiple Access Communications, MACOM 2012, held in Maynooth, Ireland, in November 2012. The 13 full papers and 5 demo and poster papers presented were carefully reviewed and selected from various submissions. The papers are organized in topical sections on network coding, handling interference and localization techniques at PHY/MAC layers, wireless access networks, and medium access control.
In what follows an order-statistics based single user reception in a communication system operating under multiuser interference is considered. This paper deals with the problem of finding channel capacity of the channel corresponding to the system under consideration.
In the framework of a ﬁrst-price private-value auction, we study the seller as a player in a game with the buyers in which he has private information about their realized valuations. We ask whether the seller can beneﬁt by using his private information strategically. We ﬁnd that in fact, depending upon his information, available signals, and his commitment power, he may indeed increase his revenue by strategic transmission of his information.
Generalized error-locating codes are discussed. An algorithm for calculation of the upper bound of the probability of erroneous decoding for known code parameters and the input error probability is given. Based on this algorithm, an algorithm for selection of the code parameters for a specified design and input and output error probabilities is constructed. The lower bound of the probability of erroneous decoding is given. Examples of the dependence of the probability of erroneous decoding on the input error probability are given and the behavior of the obtained curves is explained.
This proceedings publication is a compilation of selected contributions from the “Third International Conference on the Dynamics of Information Systems” which took place at the University of Florida, Gainesville, February 16–18, 2011. The purpose of this conference was to bring together scientists and engineers from industry, government, and academia in order to exchange new discoveries and results in a broad range of topics relevant to the theory and practice of dynamics of information systems. Dynamics of Information Systems: Mathematical Foundation presents state-of-the art research and is intended for graduate students and researchers interested in some of the most recent discoveries in information theory and dynamical systems. Scientists in other disciplines may also benefit from the applications of new developments to their own area of study.