TY - JOUR
T1 - Network-Coded Cooperative Systems with Generalized User-Relay Selection
AU - Heidarpour, Ali Reza
AU - Ardakani, Masoud
AU - Tellambura, Chintha
AU - DI Renzo, Marco
AU - Uysal, Murat
N1 - Funding Information:
Manuscript received October 12, 2019; revised March 6, 2020 and June 18, 2020; accepted July 1, 2020. Date of publication July 27, 2020; date of current version November 11, 2020. This work was supported in part by the Telus Communications Inc. and in part by the Alberta Innovates Graduate Student Scholarship. This article was presented in part at the IEEE International Conference on Communications (ICC), Shanghai, China, May 2019. The associate editor coordinating the review of this article and approving it for publication was K. Kansanen. (Corresponding author: Ali Reza Heidarpour.) Ali Reza Heidarpour, Masoud Ardakani, and Chintha Tellambura are with the Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada (e-mail: alirezaheidar-pour@ualberta.ca; ardakani@ualberta.ca; ct4@ualberta.ca).
Publisher Copyright:
© 2002-2012 IEEE.
PY - 2020/11
Y1 - 2020/11
N2 - We consider a network-coded cooperative (NCC) system that consists of N \ge 2 sources, M\ge 1 decode-and-forward (DF) relays, and a single destination. The relays perform network coding (NC) on the received sources' symbols using maximum distance separable (MDS) codes. For this system, we propose the most generalized user-relay selection (GURS) scheme in the literature that selects any arbitrary subsets of K users and any arbitrary subsets of L relays subject to practical constraints such as load balancing conditions and scheduling policy. Our analytical results and design guidelines generalize and subsume all existing results as special cases. To this end, we derive a new closed-form outage probability (OP) expression, assuming non-identically and independently distributed (n.i.i.d.) Rayleigh fading channels. The asymptotic outage expression at high signal-to-noise ratio (SNR) regime is further derived, based on which, the achievable diversity order and coding gain are quantified. The theoretical derivations are also validated through Monte-Carlo simulation.
AB - We consider a network-coded cooperative (NCC) system that consists of N \ge 2 sources, M\ge 1 decode-and-forward (DF) relays, and a single destination. The relays perform network coding (NC) on the received sources' symbols using maximum distance separable (MDS) codes. For this system, we propose the most generalized user-relay selection (GURS) scheme in the literature that selects any arbitrary subsets of K users and any arbitrary subsets of L relays subject to practical constraints such as load balancing conditions and scheduling policy. Our analytical results and design guidelines generalize and subsume all existing results as special cases. To this end, we derive a new closed-form outage probability (OP) expression, assuming non-identically and independently distributed (n.i.i.d.) Rayleigh fading channels. The asymptotic outage expression at high signal-to-noise ratio (SNR) regime is further derived, based on which, the achievable diversity order and coding gain are quantified. The theoretical derivations are also validated through Monte-Carlo simulation.
KW - Generalized user-relay selection (GURS)
KW - diversity order
KW - network-coded cooperative
KW - outage analysis
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U2 - 10.1109/TWC.2020.3010243
DO - 10.1109/TWC.2020.3010243
M3 - Article
AN - SCOPUS:85096098442
SN - 1536-1276
VL - 19
SP - 7251
EP - 7264
JO - IEEE Transactions on Wireless Communications
JF - IEEE Transactions on Wireless Communications
IS - 11
M1 - 9149836
ER -