Outage Capacity Analysis for Cognitive Non-Orthogonal Multiple Access Downlink Transmissions Systems in the Presence of Channel Estimation Error
Yinghua Zhang1,2, Yanfang Dong2, Lei Wang1, Jian Liu1,*, Yunfeng Peng1, Jim Feng3
School of Computer and Communication Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
Dawning Information Industry Co., Ltd., Beijing, 100193, China.
Amphenol Global Interconnect Systems, San Jose, CA 95131, US.
In this paper, we propose a downlink cognitive non-orthogonal multiple access (NOMA) network, where the secondary users (SUs) operate in underlay mode. In the network, secondary transmitter employs NOMA signaling for downlink transmission, and the primary user (PU) is interfered by the transmission from SU. The expressions for the outage probabilities are derived in closed-form for both primary and secondary users in the presence of channel estimation error. Numerical simulation results show that the channel estimation error and the inter-network interference cause degradation of the downlink outage performance. Also the power allocation and the location have a significant impact on the outage probability. The numerical experiments demonstrate that the analytic expressions of the outage probabilities match with the simulation results.
Zhang, Y., Dong, Y., Wang, L., Liu, J., Peng, Y. et al. (2019). Outage capacity analysis for cognitive non-orthogonal multiple access downlink transmissions systems in the presence of channel estimation error. Computers, Materials & Continua, 60(1), 379-393. https://doi.org/10.32604/cmc.2019.05790
Vancouver Style
Zhang Y, Dong Y, Wang L, Liu J, Peng Y, Feng J. Outage capacity analysis for cognitive non-orthogonal multiple access downlink transmissions systems in the presence of channel estimation error. Comput Mater Contin. 2019;60(1):379-393 https://doi.org/10.32604/cmc.2019.05790
IEEE Style
Y. Zhang, Y. Dong, L. Wang, J. Liu, Y. Peng, and J. Feng "Outage Capacity Analysis for Cognitive Non-Orthogonal Multiple Access Downlink Transmissions Systems in the Presence of Channel Estimation Error," Comput. Mater. Contin., vol. 60, no. 1, pp. 379-393. 2019. https://doi.org/10.32604/cmc.2019.05790
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