TY - JOUR
T1 - Optimal transmit power allocation for MIMO two-way cognitive relay networks with multiple relays using AF strategy
AU - Alsharoa, Ahmad M.
AU - Ghazzai, Hakim
AU - Alouini, Mohamed-Slim
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2014/2
Y1 - 2014/2
N2 - In this letter, we consider a multiple-input multiple-output two-way cognitive radio system under a spectrum sharing scenario, where primary and secondary users operate on the same frequency band. The secondary terminals aims to exchange different messages with each other using multiple relays where each relay employs an amplify-and-forward strategy. The main objective of our work is to maximize the secondary sum rate allowed to share the spectrum with the primary users by respecting a primary user tolerated interference threshold. In this context, we derive an analytical expression of the optimal power allocated to each antenna of the terminals. We then discuss the impact of some system parameters on the performance in the numerical result section. © 2012 IEEE.
AB - In this letter, we consider a multiple-input multiple-output two-way cognitive radio system under a spectrum sharing scenario, where primary and secondary users operate on the same frequency band. The secondary terminals aims to exchange different messages with each other using multiple relays where each relay employs an amplify-and-forward strategy. The main objective of our work is to maximize the secondary sum rate allowed to share the spectrum with the primary users by respecting a primary user tolerated interference threshold. In this context, we derive an analytical expression of the optimal power allocated to each antenna of the terminals. We then discuss the impact of some system parameters on the performance in the numerical result section. © 2012 IEEE.
UR - http://hdl.handle.net/10754/563377
UR - http://ieeexplore.ieee.org/document/6653786/
UR - http://www.scopus.com/inward/record.url?scp=84895922560&partnerID=8YFLogxK
U2 - 10.1109/WCL.2013.102613.130604
DO - 10.1109/WCL.2013.102613.130604
M3 - Article
SN - 2162-2337
VL - 3
SP - 30
EP - 33
JO - IEEE Wireless Communications Letters
JF - IEEE Wireless Communications Letters
IS - 1
ER -