Nokia Corporation

Nokia Technologies Oy

Core Wireless Licensing S.a.r.l.

Teemu Sipila

Ville Riekkinen

Arto Johannes Lehti

Mika Ventola

Jari A Parviainen

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.

HARQ acknowledgment channel coding for 4-carrier HSDPA MIMO

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.

Apparatus and method for cubic metric estimator in dual-carrier and multi-carrier wireless communication system

In accordance with an example embodiment of the present invention, a method is disclosed that comprises receiving at least two sets of gain values, wherein each set of gain values denotes the gains of a set of code channels that are carried by each of at least two carriers; receiving at least two power or amplitude levels that are allocated to the at least two carriers; and calculating a cubic metric based on the received at least two sets of gain values and the received at least two power or amplitude levels.

Apparatus and method for cubic metric computation in dual-carrier and multi-carrier wireless communication system

For estimating a difference between a frequency of a base station and a locally generated frequency of a mobile equipment in a mobile communications network, wherein at least a signal in a plurality of signals transmitted from the base station and received by the mobile equipment comprises a plurality of symbols each of which includes a cyclic prefix, a correlation between a symbol and its cyclic prefix is used for estimating the frequency difference.

Frequency estimation

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.

Interference variance estimation for signal detection

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.

Blind transport format detection based on decoder metric

The invention relates to a method and arrangement for enhancing a search through a trellis in a detector () that is arranged at each stage of the trellis to select a certain set of state indexes of the stage for continuation. The detector () 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.

Growing community of inventors

Oulunsalo, Finland

Teemu Sipila