Performance analysis of a low-complexity nonorthogonal multiple access scheme in visible light communication downlinks using pulse modulations

Song, Jian; Cao, Tian; Zhang, Hongming

doi:10.23919/icn.2020.0024

Cited by 9 publications

(5 citation statements)

References 28 publications

(37 reference statements)

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“…( 10) for the same impulsive noise index P. Figure (7) shows the BER performance with the ratio B as a parameter. It is clear from these curves that the BER increases as the ratio B increases for the same P. This is quite expected since, as B increases, the impulsive noise power 𝑃𝜎 𝑖 2 increases at the expense of increasing 𝜎 𝑖 2 for the same P. According to Figure (8), BER increases when the impulsive index P grows (P = 0.0001;0.01;0.1) for a fixed ratio B =5. As P is large, the BER increases and higher SNR is required when compared to AWGN alone.…”

Section: The Effects Of the Ratio Between Impulsive Noise Power And B...mentioning

confidence: 63%

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Comparison of Time and Time-Frequency Domains Impulsive Noise Mitigation Techniques for Power Line Communications

Mohammed

Mahmood

2023

jeasd

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Impulsive noise is one of the foremost situations in power line communications that degrades the performance of orthogonal frequency division multiplexing used for the power line communications channel. In this paper, a channel version of the broadband power line communications is assumed when evaluating the bit error rate performance. Three impulsive noise environments are assumed, namely heavily, moderately, and weakly disturbed. The well-known time domain mitigation techniques are tested first. These are clipping, blanking, and mixing clipping with blanking. The results of Matlab simulations show that these time-domain mitigation techniques don't significantly improve the bit error rate performance. A hybrid domain of time and frequency mitigation techniques are used to enhance the bit error rate performance. The Matlab simulation results show that this hybrid domain of time and frequency approach outperforms time domain nonlinearities and can largely improve the bit error rate performance. Signal-to-noise ratio gains of about 8 dB, 10 dB, and 10 dB are obtained for heavily, moderately, and weakly disturbed channels, respectively, using the domains of time and frequency mitigation technique at a bit error rate of when compared to the blanking time domain technique.

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Section: The Effects Of the Ratio Between Impulsive Noise Power And B...mentioning

confidence: 63%

“…OFDM has been used by a wide range of telecommunication networks, including WLANs, visible light communication systems [7,8], PLC systems , and digital video broadcasting (DVB) systems [9]. Several disturbances make it impossible to ensure communication performance in the PLC channel when using OFDM-based PLC systems [10,11].…”

Section: Ofdm Signalmentioning

confidence: 99%

Comparison of Time and Time-Frequency Domains Impulsive Noise Mitigation Techniques for Power Line Communications

Mohammed

Mahmood

2023

jeasd

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“…are present, a VLC communication channel must be established. Air particle absorption and scattering reduce the transmitted optical signal, while random atmospheric distortions caused by optical disturbance diminish the wavefront quality of the signal-carrying laser beam, causing intensity fading and random signal loss in the receiver [24], [25].…”

Section: Channelmentioning

confidence: 99%

Design and implementation of PC to PC data transmission using wireless visible light communication system

Jalil

Sabbar

Fakhruldeen

et al. 2022

IJEECS

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In this paper a laser-based <span>visible light communication system for PC to PC data transmission has been designed, simulated, and implemented. This type of communication uses light waves in the visible spectrum (380 nm to 750 nm) to deliver data. Visible light communication is any way of transmitting data using visible light. In order to avoid being detected by human eyes, this kind of communication sends information at a slower rate than human vision. Visible light communication is significantly more reliable and capable of high information transmission rates than existing wireless technologies such as Wi-Fi, Bluetooth, and others that use radio frequency spectrum. Laser-based visible light communication systems are low-cost, low-power, and do not require radio interference studies. A diode laser is frequently used to create the signal carrier. Due to its high efficiency, it can transmit data as well as illuminate. Light waves can't be intercepted because they can't penetrate opaque objects, signifying a very secure connection.</span>

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“…Orthogonal frequency division multiplexing (OFDM) is a widely applied physical layer modulation technique, because of the good performance against frequency selectivity as well as simple implementation and high transmission efficiency. Many different communication systems have adopted OFDM, including wireless local area network (WLAN) [ 1 ], visible light communication systems [ 2 , 3 ], PLC systems specified by the ITU G.9960 standard [ 4 ], and digital video broadcasting (DVB) [ 5 , 6 ], etc. Nevertheless, there exist various kinds of noises in the transmission channels of the OFDM-based PLC systems, which makes it more difficult to guarantee the communication performance in the PLC channel [ 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Power Line Communication with Robust Timing and Carrier Recovery against Narrowband Interference for Smart Grid

Yang

Yao

et al. 2022

Sensors

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Power line communication (PLC) is an important interconnection technology for the smart grid, but the robustness of PLC transmission is faced with a great challenge due to strong non-Gaussian noise and interference. In this paper, a narrowband interference (NBI) resistant preamble is designed, and an effective timing and frequency synchronization method is proposed for OFDM-based PLC systems in the smart grid, which is capable of simultaneously conveying some bits of transmission parameter signaling (TPS) as well. In the time domain, the cyclic extension of the training OFDM symbol is scrambled, which makes it feasible to combat against NBI contamination. More accurate timing detection and sharper correlation peak can be implemented under the power line channel and the AWGN channel in the presence of NBI, compared with the conventional Schmidl’s and Minn’s methods with the same preamble length. Furthermore, the TPS transmitted using the proposed method is also immune from the NBI. The proposed method is capable of improving the synchronization performance of the PLC transmission significantly, which is verified by theoretical analysis and computer simulations.

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Performance analysis of a low-complexity nonorthogonal multiple access scheme in visible light communication downlinks using pulse modulations

Cited by 9 publications

References 28 publications

Comparison of Time and Time-Frequency Domains Impulsive Noise Mitigation Techniques for Power Line Communications

Comparison of Time and Time-Frequency Domains Impulsive Noise Mitigation Techniques for Power Line Communications

Design and implementation of PC to PC data transmission using wireless visible light communication system

Power Line Communication with Robust Timing and Carrier Recovery against Narrowband Interference for Smart Grid

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