Text this: Demonstration of a low-complexity indoor visible light positioning system using an enhanced TDOA scheme

   _____     ___      _____     _____    _____    
  / ___//   / _ \\   /  ___||  |  ___|| |  __ \\  
  \___ \\  | / \ || | // __    | ||__   | |  \ || 
  /    //  | \_/ || | \\_\ ||  | ||__   | |__/ || 
 /____//    \___//   \____//   |_____|| |_____//  
`-----`     `---`     `---`    `-----`   -----`