Design and Implementation of TDMA-Based Multi-Hop Relay Network with Adaptive Equalizer for Inter-Symbol Interference Compensation 


Vol. 46,  No. 6, pp. 974-982, Jun.  2021
10.7840/kics.2021.46.6.974


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  Abstract

In this paper, we design and implement a multi-hop relay network based on time division multiple access (TDMA) to minimize packet loss and delay time due to signal attenuation in wireless communications. Through software-defined radio-based channel coding. we construct a network of actual attenuation environments. The proposed maximum-minimum relay selection scheme determines a relay based on a signal-to-noise ratio (SNR) and delay time between terminals, and provides an optimal link path. To ensure inter-symbol interference (ISI) and communication quality, we design an adaptive equalizer based on training bits and the least mean square (LMS) algorithm. The training bit reuses the symbol sequence used for frame synchronization of the transmitting and receiving nodes, and an optimal value is calculated through the learning and feedback process. Through the experimental results, we confirmed that the TDMA multi-hop relaying performance of the maximum-minimum relay selection scheme is far superior to the general method in terms of data delay time and reliability.

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  Cite this article

[IEEE Style]

Y. Oh and W. Choi, "Design and Implementation of TDMA-Based Multi-Hop Relay Network with Adaptive Equalizer for Inter-Symbol Interference Compensation," The Journal of Korean Institute of Communications and Information Sciences, vol. 46, no. 6, pp. 974-982, 2021. DOI: 10.7840/kics.2021.46.6.974.

[ACM Style]

Youngwoo Oh and Wooyeol Choi. 2021. Design and Implementation of TDMA-Based Multi-Hop Relay Network with Adaptive Equalizer for Inter-Symbol Interference Compensation. The Journal of Korean Institute of Communications and Information Sciences, 46, 6, (2021), 974-982. DOI: 10.7840/kics.2021.46.6.974.

[KICS Style]

Youngwoo Oh and Wooyeol Choi, "Design and Implementation of TDMA-Based Multi-Hop Relay Network with Adaptive Equalizer for Inter-Symbol Interference Compensation," The Journal of Korean Institute of Communications and Information Sciences, vol. 46, no. 6, pp. 974-982, 6. 2021. (https://doi.org/10.7840/kics.2021.46.6.974)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880