Embodiments herein disclose a digitally precoded SC-FDMA scheme with low PAPR, where the scheme applies a constellation rotation to the M-ary input data sequence, before circularly convolving the rotated data sequence with a polynomial decoder. The data is then transformed to the frequency domain and then mapped. An N-point IIFT is then applied to the data to produce time domain samples.

Described are computer-based methods and apparatuses, including computer program products, for automated atrial fibrillation detection. Based on morphology analysis, atrial beats are recognized and used for R-R intervals analysis. The invented system creates R-R interval classes and estimates irregularity indicator value (deviation) for each class. The total average R-R intervals deviation for all analyzed atrial beats is calculated by weighted averaging of the irregularity indicator values of all classes, where the weight values are equal to the class sizes.

The present invention pertains to the field of electronic communications and essentially relates to a telephone network, for a structured item such as an office, that comprises a local computer network for connecting computers on the transmission and reception side of the system through network adapters as well as a plurality of phone sets. The telephone network also includes a computerised telephony server which is connected to the local computer network and to a general-purpose telephone network. Each phone set is directly connected to the local computer network. The connection is carried out through a telephone adapter and through a network adapter serially connected to the latter. The telephone adapter is provided with functions for converting analog/digital signals adapted to the clock frequency of the local network, signals for calling subscribers at addresses of other telephone adapters connected to this local computer network as well as clearing signals. As for the connection of remote items comprising analog telephone networks, the local computer network of each item is provided with a router through the channel of an external computer network, wherein said router is capable of connection through said channel to the routers of other local networks.

This invention relates to a process for the disproportion and transalkylation of toluene and C9+ heavy aromatic hydrocarbons, which has no disadvantage such as the low ability for treating the heavy aromatic hydrocarbons, or the wasting to the non-aromatic light hydrocarbons or the strict limit of the feed compositions due to only using the dealkylation of heavy aromatic hydrocarbons. According to the invention, it's possible to carry out the disproportion and transalkylation of heavy aromatic hydrocarbons effectively to produce more benzene and xylene by using Mo oxide and other active components supported on zeolites as the catalysts. The said catalysts can be employed in commercial production with high catalytic activity, great treating amount of C10+ aromatic hydrocarbons, and high selectivity for benzene and C8 aromatic hydrocarbons.