Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/1304
Title: Diversity Analysis of Hierarchical Modulation in Wireless Relay Networks
Authors: Yalçın, Ahmet Zahid
Yüksel, Melda
207309
Keywords: Cooperative communication
diversity
hierarchical modulation
relay networks
Issue Date: Jul-2014
Publisher: IEEE-Inst Electrical Electronics Engineers Inc
Source: Yalç?n, A. Z., & Yüksel, M. (2013). Diversity analysis of hierarchical modulation in wireless relay networks. IEEE Transactions on Vehicular Technology, 63(6), 2989-2994.
Abstract: In communication systems, hierarchical modulation is used to increase system robustness and to send different information flows simultaneously. However, when used in cooperative communication systems, hierarchical modulation is prone to error propagation, which is the most important problem that prevents the achievement of full diversity gains. Depending on the signal-to-noise ratio between the source and the relay, threshold digital relaying can be used to mitigate error propagation. Mitigating error propagation and achieving full diversity depend on setting the thresholds at the relay properly. In this paper, the first and second threshold values are determined so that full diversity gains are attained for both base and enhancement layer bits. Analytical and simulation results are provided to show that the threshold values must depend on the hierarchy parameter.
URI: https://ieeexplore.ieee.org/document/6683090
https://hdl.handle.net/20.500.11851/1304
ISSN: 0018-9545
Appears in Collections:Elektrik ve Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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