摘要:
A convolution interleaver for processing a codeword which is derived from an input block of symbols using a redundancy-adding code (22) and which has more symbols than the input block, where the codeword has a sequence of interleaving units, each interleaving unit having at least two symbols, comprises an interleaving device (10). The interleaving device alters the sequence of interleaving units in order to obtain an interleaved codeword which has an altered sequence of interleaving units. In particular, the interleaving device does not alter the order of the symbols within an interleaving unit. However, the order of the interleaving units in the codeword is altered among one another or in respect of a preceding or succeeding codeword.
摘要:
Embodiments provide a transmitter, configured to operate in a mobile communication system according to a mobile communication standard (e.g., 3GPP), wherein resources of the communication system are divided into resources elements. The transmitter is configured to transmit an additional telegram by separating the telegram into a plurality of data packets, each of the data packets being shorter than the telegram, and transmitting each of the data packets respectively in one of the resource elements.
摘要:
The invention refers to an RFID reader (1) comprising a transmitter (2), a receiver (3), and an evaluator (4). The receiver (3) receives signals from RFID tags (10) within a given number of slots of a time frame with a given frame size (L) and provides a number of successful slots (ss) and a number of collided slots (cs). The evaluator (4) sets a modified frame size (L') based on an estimated number of RFID tags (n est ) which is determined based on the frame size (L), the number of successful slots (ss), and the number of collided slots (cs). The invention also refers to a corresponding method.
摘要:
The invention relates to a terrestrial transmitter station (100) for the transmission of a terrestrial broadcast signal (160), comprising a first receiver (110) for receiving a first signal (112), in order to obtain a satellite received signal (114), a second receiver (120), for receiving a local signal (122), in order to obtain a local received signal (124) and a signal combiner (130) for combining the first received signal (114) with the local received signal (124), to form a combination signal (140). The signal combiner (130) is designed to generate the combination signal (140) such that the combination signal (140) is formed according to a hierarchical modulation, the first received signal (114) being contained within a base layer of the hierarchical modulation and the local received signal (124) is contained in an extension layer of the hierarchical modulation. A terrestrial transmitter station (100) further comprises a transmitter (150) for transmitting the combination signal. A broadcast system comprises a first transmitter and at least one terrestrial transmitter station (100). The information emitted by the satellite-based broadcasting system can be received by means of a corresponding receiver device. The inventive broadcast system permits an addition of local information to a supra-regional broadcasted transmission signal in a frequency-efficient manner.