Hardware-software complex for approvement methods of blind signal processing in radio systems


DOI: 10.34759/trd-2023-129-17

Аuthors

Tyapkin P. S.

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

e-mail: tjapkinp@yandex.ru

Abstract

This paper presents the results of the development of a hardware-software complex for testing blind signal processing methods in problem of increasing noise immunity in communication systems. The developed hardware and software complex includes two mixing circuits, a multichannel receiver and a personal computer. Digital receiver is based on the combination of software-defined radio systems (SDR) and consists of eight analog-to-digital converters, a field-programmable gate array (FPGA) circuit and a PCI-Express bus for transmitting data to a PC for processing and demodulation. The description and functional setting of the purpose of receiving and processing signals are involved in the work, as well as the results of verification of the hardware-software complex. The results of verification of practical methods for the use of blind signal processing capabilities for interference in radio information transmission systems are obtained. When checking, the maximum data transfer rate in the continuous bit stream mode was determined when processing a mixture of BPSK signals with pulse noise of various shapes. This transmission rate exceeds 905 bps. To increase the maximum speed, it is possible to use a more powerful PC, transfer the demodulator and blind signal processing algorithms to the FPGA.

Keywords:

blind signal processing, blind source separation, software-defined radio, FPGA, digital receiver, digital design, radio channel noise immunity improvement, impulse noise

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