Mitigation of Inter-Cell Interference Utilizing Carrier Allocation in Visible Light Communication System

Smart color channel allocation for visible light communication cell ID

“…The channel allocation based on different RF carriers is adopted for signal modulation in each cell in order to mitigate inter-cell interference [2,3]. SIC [4] employs an interference cancellation scheme based on successive interference cancellation.…”

“…At approximately 15 cm, the two signals were indistinguishable because their powers were equivalent. Thus, a communication dead spot in a single channel system may occur in the immediate vicinity of neighbor links [2,4]. For example, the interference at terminal in Fig.…”

“…3. In this scenario, terminal #1 and terminal #2 set up the link connection with cell (1, 1) and cell (1,2). With the connection location of two terminals, based on the channel allocation process, they can be allocated the same color channel because after exchanging the information of the wavelength quality indication (WQI) list during active and passive scans, the survey quality of the color channel will have the same information.…”

Implementation of Visible Light Communication Based System for Indoor Positioning

“…Inter cell interference is a serious issue in the single channel system in order to reduce the inter cell interference a carrier allocation (CA), VLC system is reported (Kim et al, 2012). Indoor localization system based on VLC using LEDs to find the position of an object that is depend upon the AOA time of arrival (TO A), TDOA and also upon the received signal strength indication(RSSI), openly used method.…”

Single side‐band orthogonal frequency division multiplexing signal transmission in RF carrier allocated visible light communication

“…In this system, the intensity of light is modulated by the RF signals in the CA-VLC system; the amplitude of an optical carrier is directly modulated by controlling the current of light-emitting diodes (LEDs) with an RF signal [1]. Each lighting source transmits an individual RF carrier along with a designated data signal for a given cell without inter-cell interference (ICI).…”