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Non-orthogonal multiple access protocol for overlay cognitive radio networks using spatial modulation and antenna selection |
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| Affiliation: | 1. Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, SB RAS, Novosibirsk 630090, Russia;2. Functional Electronics Laboratory, Tomsk State University, Tomsk 634050, Russia;3. Laboratory of Single Crystal Growth, South Ural State University, Chelyabinsk 454080, Russia;4. Radio-Received and Radio-Transmitted Devices Department, Novosibirsk State Technical University, Novosibirsk 630073, Russia;5. Department of Electronic Devices, Novosibirsk State Technical University, Novosibirsk 630073, Russia;6. General Physics Department, Novosibirsk State Technical University, Novosibirsk 630073, Russia;1. Department of Electronics and Communication Engineering, Government Mahila Engineering College, Ajmer, India;2. Department of Electronics Instrumentation & Control Engineering, Government Engineering College, Ajmer, India;3. School of Engineering and Applied Sciences, Bennett University, Greater Noida, India;1. Department of Electrical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran;2. Department of Electrical Engineering, Yazd University, Yazd, Iran;1. Dept. of Electronics and Communication Engg, Institute of Engineering and Management (IEM), Gurukul Campus, Sector V, Kolkata, WB 700 091, India;2. Department of Electronics and Tele-Communication Engineering, Jadavpur University, Kolkata 700 032, India |
| Abstract: | In this paper we propose a novel spectrum sharing protocol for overlay cognitive radio networks using non-orthogonal multiple access (NOMA), spatial modulation (SM) and antenna selection (AS). The proposed protocol allows a secondary transmitter (ST) to transmit simultaneously to both a primary receiver (PR) and a secondary receiver (SR) using SM. The usage of NOMA and SM will increase the spectral efficiency for both PR and SR with reduced detection complexity than the case without NOMA in which the detectors are required to jointly detect both SM symbols at each receiver. The application of AS at ST with regards to PR provides higher quality transmission for PR without affecting the performance of SR. The performance of the proposed protocol is investigated by derivations of upper bounds on the average symbol error probabilities at PR and SR and by Monte Carlo simulations. Analytical and simulation results show that the proposed protocol offers efficient spectrum utilization over spectrum sharing protocols proposed recently that uses SM – to convey the primary data to PR through the amplitude phase modulation technique and the secondary data to SR through the index of the active antenna. |
| Keywords: | Overlay cognitive radio Non-orthogonal multiple access Spatial modulation Cooperative communication Antenna selection |
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