Patent application number | Description | Published |
20090325498 | DOPPLER ESTIMATION - Method of estimating Doppler spread comprising the steps of estimating a de-biased value according to the relation Formula (I), is a preliminary Doppler spread squared, based on measured parameters, and K | 12-31-2009 |
20100002573 | Detection of Access Bursts in a Random Access Channel - A technique for detecting one or more access bursts ( | 01-07-2010 |
20100215113 | Method and System for Pre-Coding For Frequency Selective Radio Communication Channel - A method for processing signals to be transmitted in a MIMO system from a transmitter having at least two transmitting antennas to a receiver having at least two receiving antennas on a frequency selective communication channel. The method comprises estimating elements of a channel matrix H(q | 08-26-2010 |
20100317305 | Receiver For A Radio Network And An Method For Determining A Channel Estimate For A Radio Channel - The present invention relates to a receiver for a radio network. The receiver com-prises a receiving unit and a channel estimation unit ( | 12-16-2010 |
20110026626 | METHOD OF AND A RADIO TRANSMISSION SYSTEM AND RADIO ACCESS EQUIPMENT FOR CELLULAR WIRELESS RADIO TRANSMISSION - Radio transmission in an Orthogonal Frequency Division Multiplex, OFDM, based cellular wireless radio transmission system, wherein radio access equipment of the system connects to multiple geographically spread radio antennas of a Distributed Antenna System, DAS, for transmitting to and receiving radio signals from user equipment. Transmit timings for radio transmission between the user equipment and the antennas of the DAS are established. The radio transmission is scheduled based on the established transmit timings. | 02-03-2011 |
20110069694 | METHOD FOR MOVING QUANTIZATION NOISE INTRODUCED IN FIXED-POINT CALCULATION OF FAST FOURIER TRANSFORMS - The invention discloses a method in an electronic communication device for processing a digital signal within a wireless communication network in order to transform the digital signal from a first domain representation to a second domain representation in a communication device, comprising the steps of: transforming the signal from the first domain to the second domain resulting in a signal of a first order of values with quantization noise in at least one area of the second domain, and performing a cyclic shift on the transformed signal to move the quantization noise in the second domain, resulting in a first shifted signal. | 03-24-2011 |
20110080967 | Methods and Arrangements in a Wireless Communication System for Producing Signal Structure with Cyclic Prefix - The present invention relates to methods and arrangements in a wireless communication system supporting cyclic-prefix insertion, using a symbol sequence comprising a number of samples for transmission over a radio channel that enables the handling of very large signal delay spreads. The symbol sequence is built up by a first symbol with CP and a second symbol with CP. The second symbol is a copy of the first symbol with the samples shifted in a way that makes the two adjacent symbols with CP match in regards to the sample order. The symbol sequence may also comprise a third symbol with CP or more, where the third symbol is a copy of the second symbol and with the samples shifted in analogy with the symbol shift described above. The resulting symbol sequence will thus appear as an extended continuous symbol thanks to the precise cyclic shift that matches adjacent symbols. This allows the receiver to place its FFT window anywhere during the extended symbol, e.g. at the end of the symbol sequence thus making it possible to handle a delay spread longer than the CP duration. It also allows to place e.g. two FFT windows and to combine the extracted signal into one SNR improved signal, while still handling a longer delay spread. | 04-07-2011 |
20110188563 | METHOD AND ARRANGEMENT IN A TELECOMMUNICATION SYSTEM - By exploiting the multi-block structure of the used slot format having a training sequence in the time domain and at least one pre-coded user data block to sequentially reconstruct the slot, using in the first act known symbols and using detected symbols in each subsequent act and improved receiver may be provided. This may result in less ISI/IBI and therefore increased performance. | 08-04-2011 |
20110207451 | METHOD AND ARRANGEMENT IN A TELECOMMUNICATION SYSTEM - Methods and devices for coding a slot in a cellular radio system are described. The coding allows for increased robustness and can be designed to be backwards compatible with transmission for e.g. GSM, GPRS, EGPRS and EGPRS2. | 08-25-2011 |
20110244905 | Method for Estimating Uplink Control Channel Quality - According to embodiment of the present invention, there is provided a radio base station ( | 10-06-2011 |
20120014467 | Method of and Equipment For Compensating Carrier Frequency Offset in an Orthogonal Frequency Division Multiplexing Wireless Radio Transmission System - For compensating carrier frequency generation in communication equipment for radio transmission in an Orthogonal Frequency Division Multiplex, OFDM, based wireless radio communication system, in which reference signals known communication equipment are transmitted in a regular time repetitive manner, carrier frequency generation is compensated ( | 01-19-2012 |
20120033683 | Method and Receiver For Jointly Decoding Received Communication Signals Using Maximum Likelihood Detection - The present invention relates to a method in a receiver for decoding at least two received communication signals, wherein the communication signals are modulated, pre-coded by a discrete Fourier transform and transmitted by means of single-carrier frequency division multiple access scheme (SC-FDMA). The method comprises the steps of: performing an antenna combining and equalization on a signal observed at the receiver; performing inverse discrete Fourier transform on a model of the observed signal; whitening a time domain model of the observed signal; and jointly detecting the received at least two communication signals by performing soft value calculations based on maximum likelihood detection of a whitened time domain model using a whitened time domain channel estimate. | 02-09-2012 |
20120177154 | CALCULATION OF SOFT VALUES FOR UPLINK COMMUNICATION - The present invention relates to a node ( | 07-12-2012 |
20120219098 | CONTROLLABLE FILTER TO DIAGONALIZE A TRANSMISSION CHANNEL - The present invention relates to a node ( | 08-30-2012 |
20120236924 | Spatial and Temporal Pre-Equalization - The present invention describes a channel equalizer and a method for channel equalization in a receiver in a multi-user communication system. The method comprises the steps of receiving a signal with at least two antennas to produce at least two antenna input streams, measuring the temporal of each antenna input stream and the spatial correlation between the antenna input streams, determining a user-independent pre-equalization filter from the temporal and spatial correlation, filtering the antenna input streams with the pre-equalization filter, and finally inputting the filtered signal to a user-dependent receiver configured to detect the received data symbols of a given user. | 09-20-2012 |
20130088950 | METHOD AND DEVICE FOR SINR ESTIMATION | 04-11-2013 |
20130287001 | MODULAR BASE STATION - A base station module configured to be part of a group of base station modules comprising the base station module and other base station modules, the group of base station modules together forming a base station, and having antennas for receiving radio signals from mobile stations in a base station communication band, a communication interface for transferring data obtained via the received radio signals to the other base station modules and for receiving corresponding data from the other base station module, a data handling unit selects data for transfer to the other base station modules and an uplink data processing unit processes channels used by a subset of the mobile stations communicating with the base station, where the subset is assigned to the base station module. The base station module uses the data received from the other base station modules to influence processing in the uplink data processing unit. | 10-31-2013 |
20130287153 | Receiving Node and Method for Determining Channel Estimate - The present invention relates to a receiving node, and to a related method for determining a channel estimate of a radio channel in a receiving node of a radio communication system. The method comprises calculating ( | 10-31-2013 |
20140079041 | Precoding for MIMO - The embodiments herein relate to a method in a transmitter ( | 03-20-2014 |
20140105124 | Method and Arrangement in a Telecommunication System - There is provided a method of operating a communication system, the communication system comprising a user equipment and a receiver, the method in the system comprising generating a random access transmission in a user equipment and transmitting the random access transmission to the receiver in the communication system, the random access transmission including a preamble; receiving the random access transmission from the user equipment at the receiver; processing the random access transmission in the frequency domain to detect the preamble. In preferred embodiments of the invention, the preamble has a cyclic prefix, or is preceded by a plurality of zero-valued symbols. | 04-17-2014 |
20140119472 | LAYER SWAPPING IN EGPRS MIMO - A network node ( | 05-01-2014 |
20140140427 | METHOD AND DEVICE FOR ADAPTIVE PRE-CODING - A network node ( | 05-22-2014 |
20140160968 | Enhanced Use of Frequency Spectrum in a Wireless Communication Network - The present invention relates to a user terminal ( | 06-12-2014 |
20140247818 | BEAMFORMING - The embodiments herein relate to a method in a transmitter for transmitting a data burst to a receiver in a system supporting GSM and/or EGPRS. The transmitter is arranged to make its transmissions with or without beamforming. The transmitter comprises at least two Tx antennas. When the data burst is beamformed, the transmitter transmits the data burst to the receiver through at least one of the at least two Tx antennas. The data burst comprises a common training sequence. When the data burst is non-beamformed, the transmitter transmits the data burst to the receiver through each of the at least two Tx antennas. The data burst comprises a respective antenna specific training sequence. | 09-04-2014 |
20140321318 | COMMUNICATIONS LINK CONFIGURATION - There is provided configuration of a communications link. The configuration involves wirelessly receiving control signalling from a user equipment by a network node functional unit. The control signalling relates to an uplink communications resource between the user equipment and the network node functional unit. The configuration further involves notifying, in response to receiving the control signalling and prior to receiving any user data associated with the control signalling from the user equipment on the uplink communications resource, a backhaul client functional unit to configure a communications link to a backhaul hub. | 10-30-2014 |