Modeling of Multipath Channel and Performance Analysis of MIMO‐DCO‐OFDM System in Visible Light Communications

Jia, Kejun; Li, Hao

doi:10.1049/cje.2019.03.010

Cited by 8 publications

(11 citation statements)

References 25 publications

(29 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 6 shows the BER performances of MIMO-ACO-OFDM system when the central coordinates of the PD array are in the indoor locations (0, 0, 0.85), (2.5, 2.5, 0.85). It can be seen that the SAE network outperforms ZF and MMSE algorithm 43 in the entire SNR range. Take BER = 10 − 3 at (0, 0, 0.85) as an example, the SNR requirement of the SAE is approximately 9 dB less than that of the ZF and MMSE algorithm.…”

Section: Resultsmentioning

confidence: 95%

See 1 more Smart Citation

Quantitative analysis of the stacked autoencoder method in MIMO-ACO-OFDM VLC systems

Hao

Wang

2020

Lighting Research & Technology

View full text Add to dashboard Cite

In this paper, a stacked autoencoder network is utilised to realise the signal constellation and transceivers adapted to the dimmable indoor visible light communication system in order to acquire lower symbol error probability. Its decoder parts function as denoising and the equaliser for the proposed multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) visible light communication system which can compensate the non-linear transfer function and the crosstalk between multiple LED data streams. The bit error rate performance as well as the influence of LED spatial intervals on root mean square delay spread, impulse response and bit rate have been analysed considering multipath reflections of the indoor MIMO-VLC system. The numerical results show that the a stacked autoencoder technique performs better in bit error rate reduction compared with state-of-art the zero forcing and minimum mean squared error algorithm. The experiment also shows, when the semi-angle at half power of LEDs and the field of view of Photodetectors become small, better performance can be achieved at the centre of the room, which can be explained by strong beam converge and the decreased multipath interference. Moreover, enlarging the separation between LEDs leads to improved bit error rate performance and reduced channel correlation of channel matrix, which need to be optimally chosen in practice.

show abstract

Section: Resultsmentioning

confidence: 95%

“…Usually indoor VLC systems are regarded as linear time-invariant systems and can be expressed by their own impulse response. 43…”

Section: Sae Approach For the Proposed Mimo-aco-ofdm Systemmentioning

confidence: 99%

Quantitative analysis of the stacked autoencoder method in MIMO-ACO-OFDM VLC systems

Hao

Wang

2020

Lighting Research & Technology

View full text Add to dashboard Cite

show abstract

“…The QAM is utilized for both amplitude and phase components that deliver to form modulation at high level spectrum efficiency. The Selective Mapping (SLM) technique is applied for PAPR reduction that chooses the phase rotation factors effectively [17,18].…”

Section: Single Channel Frequency Division Multiplexing Modelmentioning

confidence: 99%

“…A dominant noise source is embedded on wireless optical channel which induces a shot noise in an indoor wireless optical channel which is being modelled with an Additive White Gaussian Noise (AWGN) [7]. An additive noise is added to the MIMO-VLC system such as constant stray light noise, shot noise, thermal noise, clipping noise, readout noise [8,9] to increase the Bit Error Rate (BER) of the system.…”

Section: Introductionmentioning

confidence: 99%

Noise analysis and massive MIMO modelling in VLC for 5G networks using EKF with SCFDM

Sindhuja¹,

Shankar²

2021

Telecommun Syst

View full text Add to dashboard Cite

“…Flexible multicarrier signal regarded as intelligent waveform integrating the functions of radar sensing and communication data transmission, has been profoundly discussed for JRC system. In communication field, multicarrier signal such as Orthogonal frequency division multiplexing (OFDM) has been widely adopted for symbol modulation [ 13 ] . In radar field, multicarrier signal can improve the detectability and overcome multipath fading owing to simultaneously multiple frequency measurements,

i . e .

frequency diversity [ 14–16 ] , outperforming the conventional single‐carrier signal.…”

Section: Introductionmentioning

confidence: 99%

A Multicarrier Phase‐Coded Waveform Design Scheme for Joint Radar and Communication System

Zhang

Wang

2021

Chinese J of Electronics

View full text Add to dashboard Cite

A Multicarrier phase-coded (MCPC) waveform design scheme with two steps for Joint radar and communication (JRC) system is developed. Firstly, an integrated MCPC waveform design method is addressed by simultaneously maximizing the Signal-to-clutter-to-noise ratio (SCNR) and the Shannon capacity, subject to both the Integrated sidelobe level ratio (ISLR) constraint and the energy constraint. This model is theoretically proved to be a convex optimization problem with respect to the absolute squares of the transmit weights corresponding to different subcarriers, of which the analytical result is also discussed. Subsequently, by further optimizing the phases of the transmit weights, minimizing the Peak to average power ratio (PAPR) for JRC system is recast as a Semidefinite programming (SDP) problem, which can be effectively solved with the Semidefinite relaxation (SDR) technique via Eigenvalue decomposition (EVD) or Complex Gaussian randomization (CGR). Numerical examples are provided to verify the effectiveness of the proposed scheme.

show abstract

Modeling of Multipath Channel and Performance Analysis of MIMO‐DCO‐OFDM System in Visible Light Communications

Cited by 8 publications

References 25 publications

Quantitative analysis of the stacked autoencoder method in MIMO-ACO-OFDM VLC systems

Quantitative analysis of the stacked autoencoder method in MIMO-ACO-OFDM VLC systems

Noise analysis and massive MIMO modelling in VLC for 5G networks using EKF with SCFDM

A Multicarrier Phase‐Coded Waveform Design Scheme for Joint Radar and Communication System

Contact Info

Product

Resources

About