| 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 |
