High-speed Underwater Wireless Optical Communication: Potential, Challenges, and Possible Solutions

Traditional underwater communication systems rely on acoustic modems due their reliability and long range. However their limited data rates, lead to the exploration of alternative techniques. In this talk, we briefly go over the potential offered by underwater wireless optical communication systems. We then summarize some of the underwater channel challenges going from severe absorption and scattering that need to be surpassed before such kind of systems can be deployed in practice. We finally present some of the on-going research directions in the area of underwater wireless optical communication systems in order to (i) better characterize and model the underwater optical channel and (ii) design, develop, and test experimentally new suitable modulation and coding techniques suitable for this environment.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Adoption of a Cleaner Technology by a Monopoly Under Incomplete Information

We consider a model consisting of a monopolistic firm producing a certain good with pollution. This firm can adopt a cleaner technology within a finite time by incurring an investment cost decreasing exponentially with the adoption date. At each period of time, the firm is regulated by an emission tax which induces the socially optimal pollution and production levels, and a lump sum tax on profit. The firm is induced to adopt the cleaner technology at the socially optimal date by an appropriate innovation subsidy. In the incomplete information context, the firm has private information concerning the cost of acquiring the new technology. By an appropriate contract consisting of an adoption date and a R&D subsidy depending on the value of the innovation cost parameter announced by the firm, the regulator can induce the latter to reveal the true value of its private information in compensation of a socially costly intertemporal informational rent. However, the socially optimal adoption date of incomplete information is delayed with respect to the complete information one.cleaner technology; adoption date; incomplete information