Power‐domain non‐orthogonal multiple access based full‐duplex one‐way wireless relaying network

Non-orthogonal multiple access (NOMA) and millimeter-wave (mmWave) communication are two promising technologies to fulfill the high throughput and reliable communication requirements. Maritime communication systems use a generalized fading at near-sea-surface channels (for seashore to ship/boat/fishing fleet communication) to provide reliable communication due to atmospheric turbulence. Experimental research on generalized two-wave diffuse power (TWDP) fading reveal the footprints of mmWave. This article proposes novel exact and asymptotic closed-form expressions of average symbol error probability (ASEP) of NOMA users for cooperative maritime communication systems over TWDP fading with the different modulations. The end-to-end closed-form expressions are derived in terms of Appell's and Lauricella's hypergeometric functions. Also, the ASEP is shown using the power allocation factor for different modulation schemes. The proposed system provides better transmission reliability using generalized TWDP fading. Further, the outage probability of the system described above is analyzed using the distance, path loss exponent, transmission rate, and Rician factor as performance metrics for both the NOMA users. Effects of fading outage parameters on the system performance are studied. The end-to-end exact numerical results have been verified with the Monte-Carlo simulations that validate with asymptotic results at a high SNR regime.

Section: For Bpsk-bpsk Transmissionmentioning

confidence: 99%

Performance analysis of non‐orthogonal multiple access assisted cooperative maritime communication system over two‐wave with diffuse power fading

Makkar

Soni

Rawal

et al. 2022

“…A dynamic channel allocation algorithm was proposed to avoid the ACI in WLAN 5 . In Reference 6, the power allocation coefficients were optimized to subtract the interference signal at the destination. Other scholars jointly optimized channel allocation and power control to reduce the impact of the ACI between communication systems 4,7 .…”

Section: Introductionmentioning

confidence: 99%

Adjacent channel interference suppression based on spectral extrapolation to enhance electromagnetic compatibility of co‐site radio devices

Huo

Guo

Liu

et al. 2022

Interference suppression is an effective technique to enhance the electromagnetic compatibility of co-site radio devices. In adjacent channel interference (ACI) suppression, a wideband analog-to-digital converter (ADC) is always required to sample the nonlinear characteristics of the interference signal to reconstruct the ACI, resulting in a significant increase in the cost of the receiver. To solve the problem, this article adopts spectral extrapolation in the ACI suppression. First, narrowband bandpass filter and ADC are employed to sample the in-band component of the interference signal. Second the original wideband signal is recovered from the filtered signal by an inverse filter. Finally, the recovered signal is used for ACI reconstruction and cancellation. Simulation and experimental results show that when the adjacent channel leakage ratio is 45 dBc, the proposed method can achieve ACI suppression performance equivalent to that of the wideband ADC method. However, the required ADC sampling rate is only 1/3 of that of the wideband ADC.

“…Contrary to other relevant studies, we consider at the same time, the detrimental effect of LI at the users and the relay and the use of SIC and echo cancellation to retrieve the information signals. Also, this article tackles a more complex problem, that is, two‐way communication, compared to our previous work in Reference 5, studying one‐way FD NOMA relaying. In greater detail, this article provides the following contributions: As FD user and relay terminals are assumed, users employ echo cancellation to retrieve their desired information signals from the combined signal that is broadcasted by the relay.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of power‐domain non‐orthogonal multiple access for full‐duplex two‐way relaying

Özduran

Mahmood

Νομικός

2022

Self Cite

Non‐orthogonal multiple has the potential to improve the connectivity of wireless networks by simultaneously allowing users and devices to access the wireless medium. Meanwhile, full‐duplex communication can increase the spectral efficiency of the network as transmission and reception are concurrently performed. This article investigates full‐duplex two‐way relay communication relying on non‐orthogonal multiple access in the power‐domain. More specifically, users exchange superimposed signals and perform reception by utilizing echo‐cancellation and successive interference cancellation. For this setup, an extensive theoretical analysis is conducted, in terms of outage probability, error probability, ergodic rate, and throughput. Furthermore, by using the Lagrangian multiplier, optimal transmit power, and power allocation coefficients are determined and the relay's position is optimized to improve network performance. Our theoretical findings are verified through Monte‐Carlo simulations while significant performance gains in the optimized network case are observed.