Abstract
In this paper, we analyze the applicability of color-space-based, color-independent visual-MIMO for V2X. We aim to achieve a visual-MIMO scheme that can maintain the original color and brightness while performing seamless communication. We consider two scenarios of GCM based visual-MIMO for V2X. One is a multipath transmission using visual-MIMO networking and the other is multi-node V2X communication. In the scenario of multipath transmission, we analyze the channel capacity numerically and we illustrate the significance of networking information such as distance, reference color (symbol), and multiplexing-diversity mode transitions. In addition, in the V2X scenario of multiple access, we may achieve the simultaneous multiple access communication without node interferences by dividing the communication area using image processing. Finally, through numerical simulation, we show the superior SER performance of the visual-MIMO scheme compared with LED-PD communication and show the numerical result of the GCM based visual-MIMO channel capacity versus distance.
Highlights
In [1], it has been argued that it is becoming feasible to achieve high data rates over larger transmission ranges in mobile optical wireless communications using camera receivers through a concept called ‘visual multiple-input multiple-output’
Multiple transmit elements of a light emitting array (LEA) are used as transmitters to communicate with the pixels of the camera which act as multiple receiver elements to create the visual-MIMO channel
By incorporating GCM into visual-MIMO, we may obtain a better symbol error that many errors could occur during the transition of an arbitrary target color to another when the transmitter does not send the target color and the receiver is a photo detector (PD) instead of a camera
Summary
In [1], it has been argued that it is becoming feasible to achieve high data rates over larger transmission ranges in mobile optical wireless communications using camera receivers through a concept called ‘visual multiple-input multiple-output (visual-MIMO)’. In this concept, multiple transmit elements of a light emitting array (LEA) are used as transmitters to communicate with the pixels of the camera which act as multiple receiver elements to create the visual-MIMO channel. Using MIMO techniques such as “multiplexing” to send independent streams of bits using the multiple elements of the light transmitter array and recording over a group of camera pixels can further enhance data rates.
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