Dmitry Osipov

The Institute for Information Transmission Problems · Laboratory for Transmission, Protection and Analysis of Information

The information content of the parameters of a spectral voice source model in an automatic voice identity recognition problem is studied. For the voice parameters, the identity recognition error was 20.8%; using these parameters together with the pitch period reduced the error to 13.8%. Lastly, the combined use of the spectral model parameters with...

Introduction: Developing physical level techniques for machine type communications is a challenging task. In particular developing low complexity channel estimation with acceptable precision or maintaining accurate power control is cumbersome. One possible way to solve this problem is to use the reception techniques based on order statistics that d...

This paper devotes to comparison of different coding schemes (various constructions of Polar and LDPC codes, Product codes and BCH codes) for the case when information is transmitted over AWGN channel with quantization with lowest possible complexity and resolution: 1-bit. We examine performance (in terms of Frame-error-rate -- FER) for schemes men...

Internet of Things (IoT) is one of the most important emerging techniques for the future generation communication systems. Recently a new approach to IoT physical layer design based on FH OFDMA and nonparametric reception techniques has been proposed. This approach offers a number of benefits including: high interference proofness and thus high use...

The model of a channel that describes the transmission of information in communication systems with a single-user receiver based on order statistics is considered. The transmission of information through such a channel using a linear block code is studied. The aim of this paper is to find an upper bound on error probability for the case in which ex...

When combined with error-correction codes reception techniques based on nonparametric hypothesis testing and order statistics provide strong immunity to different types of interference including multiuser interference. That makes communication systems using such reception techniques most appealing candidates for various applications such as Machine...

The following paper adapts the classical Zigangirov-Jelinek algorithm to the decoding of nonbinary block codes under severe mixed jamming. To ensure reliable communications in this scenario we combine reception techniques based on distribution free statistical tests with sequential decoding on syndrome trellises. It will be shown that the proposed...

In what follows a coded DHA FH OFDMA system employing short block MDS codes as inner codes in time domain and a nonparametric detector is considered. For the system under consideration dependencies of the probability of erroneous decoding and denial probability for the inner codes on the detector parameter that is used to compute reliability values...

In what follows a coded DHA FH OFDMA employing robust reception and concatenated coding construction is considered. The problem of employing Generalized Minimum Distance (GMD) decoder as an outer code decoder is considered. The effectiveness of the proposed decision is verified by means of simulation. In particular, performance of the communication...

In what follows a channel model that describes a class of communication systems employing a certain nonparametric receiver is considered. In particular a block coded transmission via the channel under consideration and soft-input mismatched decoding are considered. The paper deals with a problem of finding an upper bound on the probability of erron...

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.

Future generation communication systems will have to endure interference induced by communication systems operating within the same frequency bands. Recently several coded DHA FH OFDMA systems employing rank-based detectors able to solve this problem were proposed. Unfortunately such detectors have relatively high complexity. In what follows a redu...

In what follows signal-code constructions employing block and convolutional nonbinary inner codes that can perform under severe jamming are proposed. Robustness of the proposed signal-code constructions to jamming is verified by means of simulation.

The problem of wireless coexistence will become crucial in years to come. Future generation communication systems will have to endure interference induced by communication systems operating within the same frequency bands. Coded DHA FH OFDMA using ordered statistics is well suited for the task. This paper addresses the problem of transmission rate...

We find an analytic expression for estimating error probability in a multiple access system that employs a signal-code construction based on q-ary codes, dynamically allocated frequency subranges, and a maximal energy receiver under the influence of "tracking" interference.

We consider an uncoordinated multiple-access system that employs a modulation technique, in which the probability of suppressing the signal sent by a certain user can be considered negligible, to transmit information via a wireless channel (e.g. time hopping (TH) with pulse position modulation (PPM)).This channel can be considered as an A channel (...

In what follows an upper bound for the probability of erroneous decoding in a coded DHA FH OFDMA system with a noncoherent ML detector under multitone jamming is introduced.

In what follows the problem of finding upper bounds on denial probability and probability of erroneous decoding in a coded Dynamic Hopset Allocation Frequency Hopping system with noncoherent threshold reception is considered.

We address the problem of constructing a multiple access system for a disjunctive vector channel, similar to a multiuser channel without intensity information as described in [1]. To solve the problem, a signal-code construction based on nonbinary codes is proposed. For the resulting multiple access system, a lower bound on the relative group rate...

Frequency Division Multiple AccessTime Division Multiple AccessCode Division Multiple AccessAdvanced MA MethodsRandom Access Multiple Access Methods Conclusions References

In what follows an asynchronous DHA FH OFDMA (Dynamic Hopset Allocation Frequency Hopping) system with threshold noncoherent reception is considered. DHA FH OFDMA systems are a novel class of FH systems that combines frequency hopping with positional coding. DHA FH OFDMA with noncoherent reception is the most promising technique since it turns out...

Hereinabove a novel class of FH CDMA systems has been introduced: these are Dynamic Hopset Allocation FH CDMA systems. Two models with different reception strategies were considered: the DHA FH CDMA system with a threshold receiver and the DHA FH CDMA with a MAXP receiver. For both models a probabilistic description has been given using the approac...

In what follows a novel quasisynchronous FH-MC-CDMA system with threshold reception is introduced. An expression for the optimum (in maximum a posteriori sense) threshold value is obtained. Error and erasure probability values for the system under consideration are estimated.

In this paper a novel OFDMA system with combined ASK/FSK modulation and outer woven turbo code is introduced. The performance of such a system represented in the form of error probability has been investigated.

We consider a frequency hopping orthogonal frequency-division multiple access (FH OFDMA) system different from those previously described. To find the probability density function of the variable used by the detector, we propose an approach based on the characteristic function method and Bessel function technique. Based on this approach, we obtain...

We consider a multiple-access system in which each user is given q out of Q available subchannels (q ¿ Q). We investigate capacities of two channels emerging in the system under consideration in the case of single-user reception. These channels can be considered as modifications of the A-channel. In the first case we assume that a signal transmitte...

In this paper a Code Division Multiple Access detector based on a neural network, which is proposed in (4), is considered. It is shown how the choice of an updating scheme and/or the network parameters influences the detector performance. A weight updating scheme that might be used instead of the classical ones is proposed.