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Wireless Bidirectional Relaying using Physical Layer Network Coding with Heterogeneous PSK Modulation

Chinmayananda, A and Buch, Saket D and Rajan, B Sundar (2018) Wireless Bidirectional Relaying using Physical Layer Network Coding with Heterogeneous PSK Modulation. In: IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY .

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Official URL: http://dx.doi.org/10.1109/TVT.2017.2771325

Abstract

In bidirectional relaying using Physical Layer Network Coding (PLNC), it is generally assumed that users employ same modulation schemes in the Multiple Access phase. However, as observed by Zhang et al., it may not be desirable for the nodes to always use the same modulation schemes, particularly when node-relay channels are not equally strong. Such a scheme is called Heterogeneous PLNC. However, the above approach uses the computationally intensive Closest Neighbour Clustering algorithm to find the network coding maps to be applied at the relay. Also, the treatment is specific to certain cases of heterogeneous modulations. In this paper, we show that, when users employ heterogeneous symmetric-PSK modulations, the network coding maps and the mapping regions in the fade state plane can be obtained analytically. Performance results are provided in terms of relay error rate and bit error rate.

Item Type: Journal Article
Additional Information: Copy right for this article belong to IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Division of Electrical Sciences > Electrical Engineering
Depositing User: Id for Latest eprints
Date Deposited: 17 Apr 2018 19:19
Last Modified: 17 Apr 2018 19:19
URI: http://eprints.iisc.ac.in/id/eprint/59620

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