Abstract
Bearing in mind the high data rate and volume requirements of 5G and beyond networks, millimeter wave (mmWave) systems can be utilized with the assistance of free-space optical (FSO) systems since both technologies exhibit distinctive behaviors under different weather conditions. Therefore, in this study, we investigate a relay-based dual-hop hybrid FSO-mmWave systems from an outage performance point of view, where the communication in each hop is established on both FSO and mmWave links simultaneously. Specifically, Nakagami-m distribution is used for mmWave fading channels, while gamma-gamma distribution is assumed for FSO turbulence channels. Two well-known amplify-and-forward (AF) relaying schemes are examined during data transmission, in which the power amplification operation is based on partial and full channel state information of the system, namely, fixed-gain and variable-gain AF relaying methods. The effects of fundamental system variables on the outage analysis of the relay-based hybrid transmissions are investigated by obtaining exact closed-form derivations of the outage probability and effective throughput. Based upon the results, it is shown that the proposed closed-form expressions are in good match with the Monte-Carlo simulations.
Original language | English |
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Pages (from-to) | 2895-2907 |
Number of pages | 13 |
Journal | IEEE Access |
Volume | 10 |
DOIs | |
Publication status | Published - 2022 |
Externally published | Yes |
Keywords
- 5G mobile communication
- Atmospheric modeling
- Dual-hop relay
- Fading channels
- Free space optical
- Millimeter wave
- Outage performance
- Radio frequency
- Relays
- Signal to noise ratio
- Wireless communication
- hybrid FSO-mmWave systems