Performance-enhanced indoor MIMO-OFDM visible light communications using individual/joint CAZAC precoding techniques

Chen, Mengru; Lu, Huimin; Chen, Danyang; Jin, Jianli; Chen, Ming; Wang, Jianping

doi:10.1364/ao.409761

Cited by 3 publications

(1 citation statement)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also, the analytical analysis of the throughput is presented for the rate‐less without Automatic Repeat Request (ARQ) scheme and the classical Forward Error Correction (FEC) with the ARQ consideration scenarios. Therefore, the proposed technique aims to improve the MIMO systems error performance and enhance the system security through the different secret keys of the chaotic interleaving, changeable every transmitted packet [7]. Utilizing the erasure error control codes achieves improved the real‐time signal quality over the noisy and unreliable fixed and mobile communications channels.…”

Section: Introductionmentioning

confidence: 99%

Performance enhancing of MIMO‐OFDM system utilizing different interleaving techniques with rate‐less fountain raptor code

et al. 2022

View full text Add to dashboard Cite

Due to the importance of both rate-less digital fountain codes and Multi-Input Multi-Output (MIMO) schemes in Fifth and Sixth Generation (5G/6G) wireless networks, this paper investigates enhancing the performance of MIMO-Orthogonal Frequency Division Multiplexing (MIMO-OFDM) based system by employing the rate-less fountain codes. The rate-less codes, such as the Tornado codes and Raptor codes, have a flexible code rate that differs from the classical channel coding schemes. This paper uses Raptor code to study the MIMO system's performance with the rate-less codes over different wireless communications channels. The proposed MIMO-fountain code-based system has been tested over the various wireless communication channel conditions concerning the varied Frequency Doppler (FD). In the proposed rate-less wireless communication system, multiple interleaving techniques and equalizers are used to improve its performance. Computer-based simulation experiments are assigned to evaluate the MIMO-fountain code system using the different data transmission scenarios. Simulation results confirm the superiority of the presented wireless rate-less system compared to fixed-rate wireless systems in terms of Bit Error Rate (BER) and throughput.

show abstract

Section: Introductionmentioning

confidence: 99%

Performance enhancing of MIMO‐OFDM system utilizing different interleaving techniques with rate‐less fountain raptor code

et al. 2022

View full text Add to dashboard Cite

show abstract

NOMA or MIMO Effects Severer BER in VLC Network Performance?

Assaidah,

Satya,

Satria

et al. 2023

2023 International Workshop on Artificial Intelligence and Image Processing (IWAIIP)

View full text Add to dashboard Cite

Joint precoding and power allocation in a FSO channel with signal-dependent noise

Feng¹,

kong²,

Guo³

et al. 2023

Appl. Opt.

View full text Add to dashboard Cite

To enhance the throughput of visible light communication (VLC), this paper investigates precoding and power allocation jointly in a free space optical channel with signal-dependent noise (SDN-FSO). With the presence of SDN from a light source, a more realistic multi-user multiple-input single-output (MU-MISO) VLC channel model is introduced. First, based on the entropy power inequality, a capacity bound for the SDN-FSO channel is derived under a MU-MISO scenario. Second, due to the nonnegativity of SDN-FSO input, a zero forcing constraint is introduced to alleviate multi-user interference. Third, from the perspective of resource allocation, min-max and total power budget constraints are taken into consideration. A non-convex joint optimization problem is formulated and divided into two subproblems, i.e., the precoding subproblem and power allocation subproblem. Moreover, an iterative algorithm based on a concave and convex program and a simplified high signal-to-noise ratio approximation method are iteratively implemented in the precoding subproblem. For the power allocation subproblem, successive convex approximation is employed to ensure its optimality. Simulation results indicate that the proposed joint optimization methods can converge after about two iterations and accomplish a throughput improvement of up to 1∼3nats/s/Hz as compared with the benchmarks for four different spacing scenarios. When channel state information is interfered with noise, the proposed methods still demonstrate their superior performance with varying degrees of noise.

show abstract

Performance-enhanced indoor MIMO-OFDM visible light communications using individual/joint CAZAC precoding techniques

Cited by 3 publications

References 15 publications

Performance enhancing of MIMO‐OFDM system utilizing different interleaving techniques with rate‐less fountain raptor code

Performance enhancing of MIMO‐OFDM system utilizing different interleaving techniques with rate‐less fountain raptor code

NOMA or MIMO Effects Severer BER in VLC Network Performance?

Joint precoding and power allocation in a FSO channel with signal-dependent noise

Contact Info

Product

Resources

About