摘要:
The present disclosure describes a method, performed by a data processor comprising a cyclic redundancy check (CRC) module configured for calculating CRC remainders for encoded data and a comparator comprising a shift register, for making a cyclic redundancy check of an encoded data record of bit length L, in which at least A bits of the record represent content data and at least B bits represent check data. A system for performing a cyclic redundancy check is also described.
摘要:
An approach is provided for reducing latency in fast Fourier transformation (FFT) related systems, such as orthogonal frequency division multiplexing (OFDM) systems. In a first processing direction, an interleaving processing is performed to obtain an interleaved data sequence which is then subjected to an inverse fast Fourier transformation processing, wherein the interleaving processing comprises a bit re-ordering processing of the inverse fast Fourier transformation processing. In an opposite second processing direction, a fast Fourier transformation processing is performed with a bit-reversed output data sequence which is then subjected to a de-interleaving processing, wherein the de-interleaving processing comprises a bit re-ordering processing required for re-ordering said bit-reversed output data sequence. The combined interleaving/de-interleaving and reordering processing leads to a reduced latency and saves memory space.
摘要:
The invention relates to an electronic device comprising a headset connector adapted to connect a headset to the electronic device and an active amplifier circuit connected to the headset connector. The active amplifier circuit is adapted to amplify radio signals received by an antenna, which is connected to the electronic device via the headset connector. The invention relates equally to a chip comprising such an active amplifier circuit, to a system comprising the electronic device and to a corresponding method for receiving radio signals at such an electronic device.
摘要:
A wireless electronic device receives a digital broadcast data stream above 150 kilohertz, using a digital receiver. The device has a visual output unit for displaying or causing to be displayed a digital image or text received via the broadcast data stream. A user input device enables a user to indicate at least one selected image or text to be automatically saved, or immediately output by the visual output unit. The visual output unit may be capable of providing multimedia output such as digital services and video.
摘要:
A method for estimating channel state information (CSI) for a communication channel is disclosed. Theoretical channel capacities are calculated using combinations of rank indicator (RI) and precoding matrix index (PMI) values. A number of these theoretical channel capacities are selected and used for determining an optimum combination of channel quality indicator (CQI) values, RI values and PMI values. This combination of values is subsequently transmitted as CSI.
摘要:
A method for channel estimation includes receiving data at a number of frequency intervals in a frequency band over a number of first time intervals. A first set of channel estimates is determined for each pilot symbol within the data over a second time interval comprising at least one first time interval, and time-direction interpolation is performed to determine a second set of channel estimates for a number of data portions in a frequency interval using the first set of channel estimates. The frequency interval comprises a data portion comprising a pilot symbol. Frequency-direction interpolation is performed to determine a third set of channel estimates for each first time interval. The time-direction interpolation and the frequency-direction interpolation can be performed in reverse order with the channel estimates generated by the frequency-direction interpolation being used as inputs for time-direction interpolation.
摘要:
In various aspects, the disclosure describes systems and methods for decoding of convolutionally encoded signals representing, for example, telecommunications signals such as command or content signals used in digital telecommunications. In various embodiments such aspects of the disclosure provide systems and methods for improving the efficiency, speed, and power consumption of such processes by providing architectures and methods for processing various parts of the encoded data records in parallel, using multiple and optionally specially-designed, dedicated memory registers and multiplexers.
摘要:
A lightning detector for lightning detection and a lightning detection method, wherein the lightning detector includes a Digital Radio Mondiale (DRM) digital broadcasting system receiver having an analog front-end and a digital base-band; wherein with the analog front-end DRM receiver the radio signal from lightning can be detected when a DRM receiver application and a lightning detection application operate in the same AM band application engine.
摘要:
The invention relates to a method for replacing subtitle text with occasional word or idiom translations. In the method an initial language skill is determined. A content object is selected for presentation. A content vocabulary associated with the content object is determined. The content vocabulary is reduced based on the initial language skill to produce a target vocabulary. The presentation of said content object is started in the electronic device. The presence of a word in the content object is detected. The translation of the word is displayed on a display of the electronic device, if the word belongs to the target vocabulary.
摘要:
In various aspects, the disclosure describes systems and methods for decoding of convolutionally encoded signals representing, for example, telecommunications signals such as command or content signals used in digital telecommunications. In various embodiments such aspects of the disclosure provide systems and methods for improving the efficiency, speed, and power consumption of such processes by providing architectures and methods for processing various parts of the encoded data records in parallel, using multiple and optionally specially-designed, dedicated memory registers and multiplexers.