An approach for Tomlinson-Harashima Precoding in Visible-Light-Communications Systems

Kim, Jee Hyun; Olson, A.G.; Govindasamy, Siddhartan; Rahaim, Michael

doi:10.1109/cits.2018.8440150

Cited by 3 publications

(2 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There has also been extensive research on nonlinear precoding designs [18][19][20]. Compared to linear precoding schemes, nonlinear precoding incurs higher energy consumption and complexity but achieves higher signal-to-noise ratios (SNR).…”

Section: Related Workmentioning

confidence: 99%

“…Compared to linear precoding schemes, nonlinear precoding incurs higher energy consumption and complexity but achieves higher signal-to-noise ratios (SNR). Yu et al [18] proposed ZF dirty-paper coding to attain the maximum channel capacity in MIMO systems, whereas Kim et al [19] introduced Tomlinson-Harashima precoding (THP) to reduce complexity. Wang et al [20] developed a successive interference cancellation (SIC)-based precoding scheme with sub-connected architecture (SIC-SA) to address severe MUI issues in MIMO VLC systems.…”

Section: Related Workmentioning

confidence: 99%

See 1 more Smart Citation

On Weighted Sum Rate of Multi-User Photon-Counting Multiple-Input Multiple-Output Visible Light Communication Systems under Poisson Shot Noise

Chen,

Zhou,

Wang

et al. 2024

Applied Sciences

View full text Add to dashboard Cite

Photon counting has been proven to possess excellent signal detection capabilities at low power levels and has extensive potential applications in sixth-generation (6G) communications. However, the inherent dependency between the signal and noise complicates system analysis, and optimizing achievable rates in photon-counting visible light communication (VLC) systems remains unresolved. This paper introduces a new method aimed at minimizing multi-user interference (MUI) through a zero-forcing (ZF) scheme and maximizing the weighted sum rate of the proposed downlink multi-user photon-counting multiple-input multiple-output (MU-PhC-MIMO) VLC system by solving an optimization problem. The key point lies in our utilization of the ZF approach to derive a reasonable asymptotic approximation expression for the weighted sum rate. Subsequently, we use variable substitution and methods like successive convex approximation (SCA) to iteratively convexify the non-convex optimization problem and maximize the weighted sum rate under the ZF form. Compared to other algorithms, this approach can save 2.5 dB of transmission power to achieve the same system-weighted sum rate and significantly outperforms the repetition coding scheme at sufficient transmission power.

show abstract

Section: Related Workmentioning

confidence: 99%