Author
Heidarpour, Ali Reza, Karabulut Kurt, G., Uysal, Murat
Publication Date
2017-03
Publication Place
-
IEEE
Subject
Network coded cooperation (NCC), Orthogonal frequency division multiple access (OFDMA), Finite-SNR diversity-multiplexing tradeoff (DMT)
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
1536-1276
Record ID
fc22b0e1-3c33-46ed-a4d3-e4ea356d8cfd
Library Location
Electrical & Electronics Engineering
Date
2017-03
Notes
Due to copyright restrictions, the access to the full text of this article is only available via subscription.
Sample Text
Network-coded cooperation (NCC) is an effective method to improve the throughput efficiency in cooperative wireless networks. The combined use of orthogonal frequency division multiplexing (OFDM) with NCC has been further studied in the literature to exploit the multipath diversity gains. In this paper, we consider orthogonal frequency division multiple access (OFDMA), an extension of OFDM to a multiuser system where subsets of carriers are assigned to different users. We first derive a closed-form expression for the outage probability of NCC-OFDMA over Rician fading channels and then present the asymptotical and finite-SNR DMT expressions. Our results provide insight into the performance mechanisms under practical SNR regime of NCC-OFDMA systems and demonstrate that NCC-OFDMA is able to fully exploit both frequency and spatial diversity. We also show that the derived finite-SNR DMT converges to an asymptotical one as expected. Furthermore, special cases for our derived analytical expressions are presented, to show that the derived expression is a generalized case of the related the state of the art results. Simulation results are further presented to verify our theoretical analyses.
DOI
10.1109/TWC.2016.2633354
Cilt
16
