This thesis work will study the efficiency of a flexible aggregation solution, in terms of computational complexity and error vector magnitude EVM. VDL4 can as an example provide with positioning data, speed information of aircrafts or vehicles equipped with a VDL4 transponder. For a long time radio devices have been constructed in hardware with a fixed functionality. There are other metrices for the performance evaluation but our focus was on the latency, since it is very important in the field of industrial automation. For ranging, the two popular techniques that are widely used for distance measurement are received signal strength RSS and time of arrival TOA.
During the thesis a number of algorithms were tested, including variations of the LMS algorithm, some other approaches utilizing the correlation between echo and signal, and the RLS algorithm.
* Officiell tråd - Toshiba HD-A1 / HD-XA1 *
Both heuristics increased the influence score for a given targeted node when applied consecutively on the WTC network, and consequently the Shapley values increased as well. That is, if an item in the warehouse is moved, no manual administration should be needed to know the new position of the item. Once the algorithms have been developed they are evaluated and compared to each other and previous solutions to the problem. It shows that coverage increase by means of repetition is a good candidate, which allows for a significant increase without hardware upgrades at a low cost in terms of radio resources. WLAN infrastructures are vulnerable to many kinds of faults and malicious attacks, including, an attacker jamming the signal from an AP, or an AP becoming unavailable during positioning due to power outage. The spectrum and power resources of wireless networks have to be efficiently used to accommodate the growing number of wireless terminals and the massive increase of data transferred by their applications. Postad 25 april -