Abstract: In some embodiments, a phase detector receives a set of sampling clock signals and a data signal and compares each of the clock signals to the data signal. A clock selector selects an optimal sampling clock signal from the set of sampling clock signals based on a trend of a relationship between the clock signals and the data signal. Other embodiments are described and claimed.

Abstract: To perform path search processing by means of a smaller amount of calculation and less power consumption, region index calculator 29 decides, for each region resulting from subdividing the delay profile measurement range, whether or not it is a region in which there is a peak, and supplies the results of these decisions as index information. On the basis of this index information, region designation calculator 27 outputs information indicative of whether or not a given region is a region in which a path is present. On the basis of the information from region designation calculator 27, data classifier 24 classifies data, after analogue-to-digital conversion, into data of regions in which there is a path and data of regions in which there is no path.

Abstract: The aim of the invention is to determine the user data constellation of a multi-carrier signal at the receiving end. Said signal is QAM modulated in the 2K mode according to the DVB-T standard and is provided with a central carrier that is situated I the centre of the individual carriers and is temporarily modulated with user data and temporarily represents a distributed pilot. To resolve the aim of the invention, the appearance frequency of all I/Q values pertaining to the portion of user data belonging to the central carrier is detected and the centre of said user data constellation is then detected.