Samsung Electronics Co., Ltd.

Intel Corporation

Peter Jung & Guido Bruck Institut Fur Kooperationstechnik Gbr

University of Duisburg-Essen

Admir Burnic

Peter Jung

Tobias Scholand

Frank Huertgen

Hyeon-Woo Lee

Yeon-Ju Lim

Sung-Ryul Yun

Jan K Ellenbeck

Michael Speth

Roland Hellfajer

Jong-Hoon Ann

Hye-Young Lee

Christoph Spiegel

Sven Dortmund

Byoung-Yun Kim

Peter Ascheuer

Song-Hun Kim

Thomas Esch

Achim Seebens

Andreas Waadt

Markus Schlamann

Romeo Lopez Soto

Alexander Viessmann

Alexander Viebmann

Arjang Hessamian-Alinejad

Christian Kocks

Giuseppe Lipuma

A wireless device includes a radio transceiver, and a digital transmitter configured to transmit, via the radio transceiver, a first data symbol, and to transmit, via the radio transceiver, a repetition of the first data symbol immediately after the first data symbol, where the first data symbol forms a cyclic prefix for the repetition of the first data symbol.

Methods and devices for communications in device-to-device networks

A synchronization device includes a receiver circuit configured to receive data from a first radio network during a first time interval and to receive data from a second radio network during a second time interval; a frequency synchronization circuit configured to control a common system clock based on first data received from the first radio network and based on second data received from the second radio network; and a timing synchronization circuit configured to time-synchronize data reception based on the common system clock and based on a free running clock.

Methods and devices for synchronizing data reception from a first radio network and from a second radio network

A method for transmitting and receiving broadcast signals in a radio broadcasting communication system is provided together with an associated apparatus. The transmitting method includes creating a frame having a preamble slot, a data slot and a control slot, and sending the created frame. The control slot has information for assigning the data slot to one of an uplink and a downlink. The receiving method includes receiving such a frame wherein the control slot has scheduling information for each user, and extracting the data slot from the received frame by using the scheduling information in the control slot. These methods may realize an interactive broadcasting by separately employing broadcast signals for the uplink and downlink.

Method and apparatus for two-way broadcasting

A beam-forming apparatus and method for improving system performance using a spatial interpolation and at least one Angle of Arrival (AoA) in a system based on regular spatial sampling is provided. The AoA is estimated using a carrier-to-interference ratio. Beam-forming angles are distributed and steered in a predefined scheme such that an identical process is applied in all directions. According to this steering, a linear system model is computed based on regular spatial sampling using regular spatial separation at beam angles. Beam-forming performance is improved by compensating for a difference between adaptive and sector-type arrays. Only the steps of computing a spatial interpolation and determining an angle range for beam-forming using at least one AoA are added. The precision of estimating an AoA and the precision of beam-forming increase without an additional antenna. Because the system is simpler than that of an adaptive beam-forming system, significant gain is obtained.

Beam-forming apparatus and method using a spatial interpolation based on regular spatial sampling

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Duisburg, Germany

Admir Burnic