Application of cognitive radio technologies for bus travel information support

Abstract

The current tasks of information support for bus travel are limited to general information about the trip and excursions, for example, in the form of the purpose and duration of the tour as a whole and individual trips to the objects of the tour, the plan and cost of excursions. During the main part of a sufficiently long trip, a qualified guide or accompanying person gives standard information about the history and sights of the points visited or passed on the route. On the way back to the place of permanent or temporary deployment, travelers are usually offered to watch a movie from the standard collection or just relax. The main problem here is the lack of functionality, flexibility and efficiency in the formation of information content, the limited channels for its delivery. One of the solutions to this problem is local radio broadcasting using a variety of information sources and the use of cognitive radio technologies for information delivery. It is understood that the preparation of information content can be performed in real time. The study of the effectiveness of this proposal is the purpose of this work. Methods: The substantiation of the possibility and effectiveness evaluation of the cognitive radio technologies application was carried out by devices prototyping using USRP devices in conjunction with the LabVIEW package. Results: the following tasks are solved: scanning the frequency range to determine the free area sufficient for high-quality reproduction and select desired information content; receiving and writing to a file of a radio signal digitized samples with a given quality; real-time rebroadcasting of found content in a selected section of the frequency range; file multimedia and speech content transmission in the selected section of the frequency range with a given quality using FM radio standard. Conclusions: The rich tuning and indication set of the developed prototypes allows using these also for educational and research purposes, including in distance educational mode.