Patent application number | Description | Published |
20090279587 | FREQUENCY HOPPING OFFSETTING FOR MULTIPLE USERS REUSING ONE SLOT (MUROS) - First and second groups of mobile terminal communications in a cell are defined. A basic frequency hopping sequence for both groups is identified. An offset from the basic hopping sequence is determined for each mobile terminal communication in the first and second groups and is used along with the basic frequency hopping sequence to generate an assigned frequency hopping sequence for each mobile terminal. Some of the assigned frequency hopping sequences overlap such that a first communication from the first group and a second communication from the second group simultaneously use the same time-frequency radio resource during one hop in their corresponding assigned frequency hopping sequences. The first and second mobile terminal communications use a different time-frequency radio resource during another hop in their respective assigned frequency hopping sequence thereby varying the offset for each mobile terminal communication in the second group to improve interference diversity between the two groups for each hop. | 11-12-2009 |
20100105403 | Method For Repetitive Transmissions - The present invention relates to method, and apparatus relating to cellular radio communication ( | 04-29-2010 |
20100167679 | Method and Arrangement for Improved Model Order Selection - In a method of enabling model order selection for joint channel synchronization and noise covariance estimation of at least one received signal in a wireless communication network, generating S | 07-01-2010 |
20100296597 | Method of Data Modulation Adapted to Selected Modulation Rotational Angle - In a method, modulator, transmitter and receiver, the modulator of data signals to be transmitted simultaneously to at least two receiving mobile stations in the same transmission time slot is adapted to select rotational angle of a QPSK transmission modulation, such as a hybrid α-QPSK modulation used to modulate the data signals to the at least two mobile stations in response to the capabilities of the mobile stations that share the same transmission slot. | 11-25-2010 |
20100302990 | Method of Power Control - In a method and a transmitter data is transmitted to two mobile stations sharing the same frequency band and the same timeslot. The data is modulated using a quaternary symbol constellation. Further, the data is transmitted to two mobile stations multiplexed on a shared channel comprising two branches and the transmission power for the transmitted data is set in response to the relative gain of the two branches. Hereby, the total system interference is reduced. The method and transmitter further allows for a cellular radio system individual power control loops for the two sub-channels when the system uses MUROS. | 12-02-2010 |
20100311410 | Report Mechanism in a Radio System Reusing One Time-Slot - In a radio system node, such as a Base Transceiver Station (BTS), a compensation unit is provided to convert information about downlink signal strength in a measurement report received from a mobile station when the signal to the mobile station is transmitted using several co-channel signals transmitted simultaneously in the same time slot and at the same frequency. | 12-09-2010 |
20100323685 | Receiver for MUROS Adapted to Estimate Symbol Constellation using Training Sequences from Two Sub-Channels - A receiver is provided that is configured to estimate the symbol constellation of a signal modulated using a quaternary symbol constellation where data is transmitted to two mobile stations multiplexed on a shared channel comprising two branches, where the branches correspond to the real and imaginary parts of one complex-valued baseband signal. The receiver is configured to demodulate the modulated signal using the training sequences from both sub-channels. | 12-23-2010 |
20110007624 | Timeslot Sharing Using Unbalanced QPSK Modulation - In a radio transmission scheme reusing slots such as by using Orthogonal Sub Channels (OSC) in the downlink channel a parameterized, hybrid quaternary modulation is employed. In the hybrid quadrature modulation, the symbol constellation is in quadrature, with the 4 symbols lying on the unit circle in the complex plane. The orthogonality of the 1 and Q branches is preserved. A cross power branch ratio parameter α is introduced, allowing the total energy of the signal to be divided unequally between the two sub channels. This parameter α may be changed from over time. | 01-13-2011 |
20110122922 | TIMESLOT HOPPING FOR TRANSMITTING CALL DATA - The invention relates to a method for transmitting call data in a digital wireless communication network, said call data being transmitted over at least one radio frequency channel in a sequence of timeslots. Call data are transmitted in the network using timeslot hopping in which the call data of each user of the network are transmitted with a different timeslot hopping sequence. | 05-26-2011 |
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 |
20110212741 | Method and Arrangement for Enabling Improved Receiver Quality for Noise Limited Uplink Signals - In a method for enabling improved quality for noise limited uplink signals in a radio base station in a telecommunication system, said radio base station comprising a plurality of transceiver units, each comprising at least one receiver unit, adaptively allocating (S | 09-01-2011 |
20110255641 | Receiver for Voice Services Over Adaptive Multi-User channels on One Slot - A receiver, in particular a VAMOS receiver, is provided. The receiver is adapted to split the complex-valued baseband signal into its real and imaginary parts. The two branch system thus created is modeled as a real-valued Multiple Input Multiple Output, MIMO, system. The receiver is further adapted to use correlations of the noise, both in time and between branches of a channel to suppress the noise for multi-users in the same channel. In accordance with one embodiment the receiver is adapted to take into account the known symmetries present in a symbol constellation when more than one user exists in the same channel. This is for example the case in adaptive symbol constellation such as an adaptive alpha-QPSK constellation. Using the receiver in accordance with the above can provide the same performance as a joint detection receiver in the presence of Gaussian white noise, while giving better interference suppression than either SAIC or joint detection in the presence of GMSK modulated interference. | 10-20-2011 |
20120236967 | DATA MODULATION - A modulator includes a symbol mapper that is configured to map respective bits sets of a bit sequence corresponding to a burst and including data, training, tail, and guard bits into respective symbols to form a symbol sequence of data, training, tail, and guard symbols. A vector precoder is configured to apply a vector precoding transformation to the data and training symbols to form precoded symbols. These precoded symbols are combined with the tail and guard symbols in a symbol processor to form a sequence of transmit symbols. The record precoding conducted by the modulator of a transmitter enables improved link performance without the cost of increased processing complexity of the receiver algorithm. | 09-20-2012 |
20130016799 | Detection of Radio Signals in a ReceiverAANM Lopez; MiguelAACI SolnaAACO SEAAGP Lopez; Miguel Solna SEAANM Sandberg; KennethAACI EkeroAACO SEAAGP Sandberg; Kenneth Ekero SE - Non-linear distortions, called glitches, occur in radio receivers when automatic gain control (AGC) is employed for regulating the dynamic range of the received signal. It is proposed to determine (S | 01-17-2013 |
20130272273 | Methods and Devices for Transmission of Signals in a Telecommunication System - Transmitter and receiver technologies are provided that allow more than two users in a time-slotted communications system to share the same time slot by creating orthogonal sub-channels, while keeping the receiver complexity low are provided. Moreover, the users can in accordance with some embodiments employ GMSK or other non-linear continuous phase modulation technique. | 10-17-2013 |
20130308616 | Time Slot Sharing in TDMA Communication System - The embodiments of the present invention relate to a method in a transmitting unit; a method in a receiving unit; a transmitting unit and a receiving unit, in a wireless communication network employing Time Division Multiple Access, TDMA, for transmitting and, receiving and demodulating data, respectively, the data being transmitted in a signal comprising a burst, wherein bursts relating to N | 11-21-2013 |
20140006890 | Method And Apparatus For Retransmission Processing in a Communication Receiver | 01-02-2014 |
20140044089 | MULTI-USER MULTIPLE INPUT MULTIPLE OUTPUT RADIO COMMUNICATIONS - A radio communications system conducts radio communications using basic physical channels. Each basic physical channel defines a time slot and a radio frequency for transmission. Radio communication is established between a radio base station and multiple UEs over the same basic physical channel. Three or four subchannels are provided in the same basic physical channel to simultaneously support three or four full rate UE communications, seven or eight half rate UE communications, or other equivalent combinations. A first baseband transmitter chain can map full rate data corresponding to first and second full rate UE communications (or equivalent) as adaptive quadrature phase shift keying, AQPSK, signals onto a first and a second of the three subchannels. A second baseband transmitter chain can map full rate data corresponding to a third and/or fourth full rate UE communication (or equivalent) as phase shifted signals onto a third of the three subchannels. | 02-13-2014 |
20140071901 | DOWNLINK MULTICARRIER MOBILE COMMUNICATION NETWORK CONFIGURATION - The disclosure relates to a method in a mobile communication network for configuring the network for downlink multicarrier data transmission from a network node to a mobile terminal. The method includes the step ( | 03-13-2014 |
20140078881 | Methods and Devices for Transmission of Signals in a Telecommunication System - Methods and devices for generating and receiving a training sequence in a radio communication network for a user sharing the same transmission slot with other users is provided where multiple users are multiplexed in the same time slot. | 03-20-2014 |
20140079041 | Precoding for MIMO - The embodiments herein relate to a method in a transmitter ( | 03-20-2014 |
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 |
20140161030 | Methods and Devices for Transmission of Signals in a Telecommunication System - Methods and devices for generating training symbols to be transmitted in a radio network are provided for a radio system where multiple users are sharing the same transmission slot. The method involves forming a sequence of training symbols by repeating an initial block of training symbols and for each user rotating the repeated block by a user specific rotation angle. A rotated block is periodically extended in both ends. | 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 |