Simulation of a receiving system with amplitude demodulation and time division of channels in a LabView environment

 

Ya. A. Zazulin, P. Yu. Karpunin, K. V. Kireev

National Research Ogarev Mordovia State University, 68 Bolshevistskaya Str., Saransk 430005, Republic of Mordovia, Russia 

 

The paper is received on May 30, 2018

 

Abstract. The development of systems for receiving and transmitting information led to the need for more efficient use of the allocated frequency range. One of the methods of compaction of information in the communication channel is the Time Division Multiple Access (TDMA) method. This method is now widely used in satellite communication systems and in cable networks, as well as for cellular networks (GSM, PDC). This article describes one of the ways to implement the time division of channels in the LabView programming environment. Reception of information was carried out with the help of a software-defined radio system of NIIPS. The transmitter encoded the original sequence of binary symbols, and then made a temporary join of the channels. The receiver demodulated the input sequence and used a temporary demultiplexing, which allowed to restore the original sequence. The demodulation and demultiplexing unit was considered in more detail in the article. The block decoder converts the sequence of input complex numbers into a bit sequence, and the unit responsible for the temporary demultiplexing writes the resulting sequence into a single array and offers its demultiplexing according to the principles of time division into three initial sequences.

Key words: LabView, time division multiple access, amplitude keying.

For citation:

Ya. A. Zazulin, P. Yu. Karpunin, K. V. Kireev. Simulation of a receiving system with amplitude demodulation and time division of channels in a LabView environment. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2018. No. 6. Available at http://jre.cplire.ru/jre/jun18/10/text.pdf

DOI  10.30898/1684-1719.2018.6.10