Coherence distance in indoor optical wireless communication channels.

Area of Science:

• Wireless Communication
• Optical Wireless Communication (OWC)
• Channel Characterization

Background:

• Coherence distance (CD) is a key parameter in radio-frequency wireless systems, defining spatial channel stability.
• CD is less established in optical wireless communication (OWC), despite its potential to quantify spatial optical channel variations.
• Understanding spatial channel behavior is crucial for reliable OWC system design.

Purpose of the Study:

• To introduce and define average coherence distance (CD) as a metric for characterizing indoor optical wireless communication (OWC) channels.
• To propose a method for evaluating the average CD in OWC environments.
• To highlight the utility of CD in assessing spatial variations within OWC channels.

Main Methods:

• The study focuses on theoretical characterization and proposes a methodology for CD evaluation.
• The proposed method involves analyzing spatial variations in the optical channel.
• Specific mathematical or experimental procedures for calculating average CD are outlined.

Main Results:

• The average coherence distance (CD) is presented as a viable metric for indoor OWC channels.
• The proposed evaluation method provides a way to quantify spatial channel characteristics.
• The findings suggest CD can offer valuable insights into OWC channel behavior.

Conclusions:

• Average coherence distance (CD) offers a novel and beneficial metric for characterizing indoor optical wireless communication (OWC) channels.
• The proposed evaluation method facilitates the assessment of spatial channel stability in OWC systems.
• Adopting CD can enhance the design and performance of future OWC systems.