You are presented with multiple paper abstracts, alongside the associated literature review and chapter titles. Given the provided information, you are going to do a literature review. Please generate a coherent literature review that synthesizes the content, draws connections between different works, highlights major findings, and identifies any gaps in the existing research.

Literature Review Title: Survey of RF Communications and Sensing Convergence Research 
Chapter Title:  A. AUTOMOTIVE RADAR & V2V COMMUNICATIONS 
1. Abstract of Cited Paper (BIB001):  The last couple of years, the vehicle industry tends to increase the performance of lights based on led technologies. Nowadays, led systems are used as a standard by motor vehicles manufacturers. Led lights present higher reliability and are more flexible regarding design or power adjustments. Furthermore, led systems are also very convenient for intensity modulation used in telecommunication fields. We developed a very simple data transmission system based on led lights which is highly robust for short or medium distances ± from a few meters up to 15 meters. This visible light communication is dedicated to the cooperation between vehicles and road infrastructures to enhance traffic security. This paper explains the choices and first results on the data transmission performances. In this paper, we present a first prototype of our system and experimental results.

Literature Review:
The smart car revolution has lead the way in research on intelligent transportation systems (ITS). With self-driving cars on the verge of becoming viable, two clear technological needs emerge: vehicle-to-vehicle (V2V) communications and navigational/avoidance radar. Both RF  and light based BIB002 solutions have been proposed for V2V communications as car technology evolves. Further, vehicle radar is already deployed to consumer vehicles for collision avoidance and self-driving features. However, researchers have already started looking at joint radar-communications systems for V2V applications since these needs are so closely coupled BIB002 , BIB001 .