Radio frequency identification (RFID) is a technology for tracking objects that is expected to be widely adopted in very near future. A reader device sends probes to a set…
Radio frequency identification (RFID) is a technology for tracking objects that is expected to be widely adopted in very near future. A reader device sends probes to a set of RFID tags, which then respond to the request. A tag is recognized only when it is the only one to respond to the probe. Only reader has collision detection capability. The problem considered here is to minimize the number of probes necessary for reading all the tags, assuming that the number of tags is known in advance.
Well known binary and n‐ary partitioning algorithms can be applied to solve the problem for the case of known number of tags. A new randomized hybrid tag identification protocol has been proposed, which combines the two partitioning algorithms into a more efficient one. The new scheme optimizes the binary partition protocol for small values of n (e.g. n=2, 3, 4). The hybrid scheme then applies n‐ary partition protocol on the whole set, followed by binary partition on the tags that caused collision.
It is analytically proved that the expected number of time slots in the hybrid algorithm with known number of users is less than 2.20 n. Performance of these algorithms was also evaluated experimentally, and an improvement from en to approximately 2.15 n was obtained.
The algorithm shown here is efficient both by theory and practice and outperforms existing ones.
– The purpose of this survey is to find a significant sample of reference resources for electrical engineering as they are presented in subject-specific LibGuides.
The purpose of this survey is to find a significant sample of reference resources for electrical engineering as they are presented in subject-specific LibGuides.
The survey is based on a detailed observation and collection of sources designated as Reference Resources in LibGuides, titles found were compiled and organized.
The results are substantial; they offered a body of specialized resources, which includes e-book collections, dictionaries, handbooks, encyclopedias and other resources that are important to electrical engineering students and researchers.
A considerable amount of resources were found; nevertheless, they represent the resources found in a randomly selected sample of LibGuides; therefore, the result is limited to the group of libraries selected.
The results of this survey are valuable to subject librarians interested in comparing resources with a pool of libraries and to discover titles that can be of interest to their collections.
The work is original, as this is the first paper publishing the results of a survey of electrical engineering guides.