摘要:
In accordance with the exemplary embodiments of the invention there is at least a method, computer program, and apparatus for operating a receiver using at least four carriers to receive transport blocks from a transmitter, to compose a first codeword to acknowledge at least one of a reception and a lack of reception of individual transport blocks in a first part of the at least four carriers, to compose a second codeword to acknowledge at least one of a reception and a lack of reception of individual transport blocks in a second part of the at least four carriers, and to transmit the first codeword and the second codeword to the transmitter during one slot.
摘要:
In accordance with the exemplary embodiments of the invention there is at least a method, computer program, and apparatus for operating a receiver using at least four carriers to receive transport blocks from a transmitter, to compose a first codeword to acknowledge at least one of a reception and a lack of reception of individual transport blocks in a first part of the at least four carriers, to compose a second codeword to acknowledge at least one of a reception and a lack of reception of individual transport blocks in a second part of the at least four carriers, and to transmit the first codeword and the second codeword to the transmitter during one slot.
摘要:
The present invention relates to a receiver device and method of detecting a block length of a data block in a data network, wherein a respective theoretical maximum value for a metric of a decoding operation is calculated for each of a plurality of candidate block lengths, and the calculated respective theoretical maximum value is compared to a respective actual value of the metric obtained for each of the plurality of candidate block lengths by the decoding operation. The candidate block length with the highest ratio between the respective actual value and the respective theoretical maximum value is then selected from the plurality of candidate block lengths to determine the block length of the data block.
摘要:
The invention relates to a method and arrangement for enhancing a search through a trellis in a detector (220) that is arranged at each stage of the trellis to select a certain set of state indexes of the stage for continuation. The detector (220) is arranged, when each stage of the trellis is calculated, to define more than one unequal threshold value for the values of the state indexes, each threshold value defining one state index group, to calculate for each state index a path metric, to arrange the calculated state indexes into different groups by comparing the path metric value of the state index with the threshold values. Further the detector selects from the groups a certain number of state indexes for continuation in such a manner that starting from the group comprising the highest state indexes, entire groups are selected for continuation until the next entire group does not fit in. From this group only randomly selected state indexes are selected until a given number is collected.
摘要:
The present invention relates to a method, apparatus, and computer program product, wherein a level of a first signal received via first channel is determined. Additionally, a moving average of a plurality of determined levels of the first signal is obtained, and the moving average is subtracted from the determined level. The subtraction result is then used for estimating a noise variance of a second signal received via a second channel.
摘要:
The present invention relates to a receiver device and method of detecting a block length of a data block in a data network, wherein a respective theoretical maximum value for a metric of a decoding operation is calculated for each of a plurality of candidate block lengths, and the calculated respective theoretical maximum value is compared to a respective actual value of the metric obtained for each of the plurality of candidate block lengths by the decoding operation. The candidate block length with the highest ratio between the respective actual value and the respective theoretical maximum value is then selected from the plurality of candidate block lengths to determine the block length of the data block.
摘要:
A method is disclosed that includes measuring, during a measurement period, values corresponding to noise and interference signals received from a channel. The measurement period coincides with a period when no signal is transmitted on the channel. The method also includes determining one or more thresholds based upon the measured values. Second signals that correspond to a message are received on the channel. The message includes an indicator having a number of possible states. A value is determined corresponding to the indicator based upon the second signals. One of the possible states is assigned to the indicator of the received message based upon the one or more thresholds and the determined value.
摘要:
The present invention relates to a method, apparatus, and computer program product, wherein a level of a first signal received via first channel is determined. Additionally, a moving average of a plurality of determined levels of the first signal is obtained, and the moving average is subtracted from the determined level. The subtraction result is then used for estimating a noise variance of a second signal received via a second channel.
摘要:
The invention relates to a method and arrangement for enhancing a search through a trellis in a detector (220) that is arranged at each stage of the trellis to select a certain set of state indexes of the stage for continuation. The detector (220) is arranged, when each stage of the trellis is calculated, to define more than one unequal threshold value for the values of the state indexes, each threshold value defining one state index group, to calculate for each state index a path metric, to arrange the calculated state indexes into different groups by comparing the path metric value of the state index with the threshold values. Further the detector selects from the groups a certain number of state indexes for continuation in such a manner that starting from the group comprising the highest state indexes, entire groups are selected for continuation until the next entire group does not fit in. From this group only randomly selected state indexes are selected until a given number is collected.
摘要:
In accordance with an example embodiment of the present invention, a method is disclosed that comprises by using a processor, calculating a plurality of signal states for each of at least two carriers, selecting at least one carrier from the at least two carriers, generating modified signal states for each of the selected at least one carrier by rotating at least one of the respective plurality of signal states with a discrete frequency shift step, determining combinations of signal states of the at least two carriers based at least in part on the modified signal states of the selected at least one carrier, and calculating a cubic metric based on the determined combinations of signal states of the at least two carriers.