Patent application number | Description | Published |
20090207853 | Technique for determining a sub-frame configuration - A technique is provided for determining the configuration of a sub-frame having data symbols including cyclic-prefixes. In some communication standards such as the Long Term Evolution (LTE) standard, a plurality of possible configurations exist for a sub-frame, with each configuration being identifiable by a certain cyclic-prefix length. In an exemplary method realization, the technique includes receiving a data signal comprising the sub-frame, evaluating one or more hypotheses of the cyclic prefix length to produce one or more corresponding evaluation results, and, based on the evaluation results, deciding on a most-likely cyclic prefix length, according to which the sub-frame configuration is determined. The hypothesis evaluation may involve autocorrelation and cyclic accumulation of samples of the received data signal. | 08-20-2009 |
20100195479 | TECHNIQUE FOR GENERATING AN SC-FDMA SIGNAL - A technique for generating a Single-Carrier Frequency Division Multiple Access (SC-FDMA) signal based on a Constant Amplitude Zero Auto-Correlation (CAZAC) sequence is disclosed. A method embodiment of this technique comprises generating a frequency domain representation of the CAZAC sequence by providing an analytical representation of the CAZAC sequence in the frequency domain with an integer phase term and calculating the integer phase term in a recursive manner for each of a plurality of frequency domain samples of the CAZAC sequence. The resulting frequency domain representation of the CAZAC sequence is then mapped to a predetermined frequency location before being transformed into the time domain to obtain a time domain representation of the SC-FDMA signal. The SC-FDMA signal may be a random access signal for transmission on a Physical Random Access Channel (PRACH). | 08-05-2010 |
20100329229 | SINGLE CARRIER FREQUENCY DIVISION MULTIPLE ACCESS TECHNIQUE - A technique for generating a single carrier frequency division multiple access (SC-FDMA) signal is described, in which from a set of M input symbols a set of N output symbols (M12-30-2010 | |
20110026649 | Technique for determining a frequency offset - A technique for determining a frequency offset between components of a communication network based on a Constant Amplitude Zero Auto-Correlation (CAZAC) sequence is described. A method implementation of this technique comprises a provision of a set of correlation signals at different frequencies, with each correlation signal being indicative of a specific frequency offset hypothesis and comprising the CAZAC sequence. Once a synchronization signal comprising the CAZAC sequence is received, this synchronization signal is correlated with each of the correlation signals to obtain a correlation result for each frequency offset hypothesis. In a next step, at least one of the frequency offset hypotheses is selected based on a comparison of the correlation results. The frequency offset may then be determined based on the at least one selected frequency offset hypothesis. | 02-03-2011 |
20110069631 | Technique for Radio Resource Management - A technique for radio resource management is proposed for controlling a wireless transceiver in a cellular communication system that comprises a scheduling channel configured to transport relative scheduling grants for signalling adjustments in transmission resources previously granted to the wireless transceiver. A method embodiment of this technique comprises the steps of deriving an amplitude parameter indicative of an instantaneous amplitude level of the scheduling channel, determining a threshold value taking into account the amplitude parameter, processing a scheduling signal received over the scheduling channel to obtain a signal sample comprising a relative scheduling grant, and subjecting the signal sample to a threshold decision based on the threshold value to decode the relative scheduling grant. | 03-24-2011 |
20110134980 | Technique for Controlling a Gain of a Receiver - A technique for controlling a gain of a receiver is provided. A method implementation of this technique comprises the steps of receiving at least one signal, initially controlling the gain of the receiver based on a correlation value of a first part of the received signal having a substantially constant signal strength, determining at least one timing-related parameter of the received signal based on the at least first part, identifying based on the at least one timing-related parameter at least a second part of the received signal having a substantially constant signal strength and further controlling the gain of the receiver based on a measured signal strength of the identified second part. | 06-09-2011 |
20110176535 | Technique for Synchronizing a Terminal Device with a Wireless Network - The invention relates to a technique for controlling a synchronization of a terminal device ( | 07-21-2011 |
20110276852 | Dynamic HARQ Buffer Management - A communication device ( | 11-10-2011 |
20130114766 | Decoding Technique for Tail-Biting Codes - A technique for decoding a signal in a communication network is provided. A method implementation of the technique comprises the steps of receiving a signal; identifying a position in the signal; initializing a Viterbi state metric; and decoding the encoded signal by means of a wrap-around Viterbi algorithm. The received signal comprises information, wherein the signal is encoded by a tail-biting convolutional code. The identified position relates to a known portion of the information. The initialized Viterbi state metric is consistent with the known portion of the information. The decoding uses the initial Viterbi state metric, wherein the decoding starts at a decoding step following the identified position. | 05-09-2013 |
20130182599 | Technique for Channel Estimation in the Presence of a Signal Phase Discontinuity - A technique for performing channel estimation based on a received signal comprising a first signal part and a second signal part in the presence of an unknown phase discontinuity between the first signal part and the second signal part is presented. A method implementation of this technique comprises providing a first channel parameter that is based on the first signal part, determining a second channel parameter based on the second signal part, estimating the phase discontinuity from the first channel parameter and the second channel parameter, updating the first channel parameter based on the estimated phase discontinuity, and determining a channel estimate based on the second signal part including performing channel estimation filtering using the updated first channel parameter as filter state information. | 07-18-2013 |
20140140255 | TECHNIQUE FOR MAINTAINING A RADIO TIME BASE - A technique for maintaining a radio time base used to schedule communication in a radio network ( | 05-22-2014 |
20140250343 | DYNAMIC HARQ BUFFER MANAGEMENT - A communication device ( | 09-04-2014 |
20140376358 | SYMBOL DETECTION TECHNIQUE - A technique of processing an Automatic Repeat Request (ARQ) transmission is disclosed. As to a method aspect of the technique, the method comprises the steps of requesting a retransmission of a transport block; receiving the retransmission of the transport block; and detecting modulation symbols. The retransmission is requested in response to an error-detecting code indicating an error in the transport block as received in at least one previous transmission. The modulation symbols are detected based on at least a part of the received retransmission and information from the at least one previous transmission. At least in some embodiments, a detection rate is thus improved. | 12-25-2014 |