[Jamshid Khun-Jush, Peter Schramm, Jan Lindskog, Stefan Rommer, Mathias Pauli, Gerd Zimmermann, Fredrik Johansson, Anders Ranheim, Peter Larsson] DE,,Nuernberg;DE,,Erlangen;SE,,Pixbo;SE,,Goteborg;DE,,Nuernberg;DE,,Eckental;SE,,Goteborg;SE,,Goteborg;SE,,Solna; The invention discloses a method for use in a wireless communications system with a plurality of broadcasting nodes, comprising the step of enabling one node in the system to function as a central node in said system and letting said node enable measurements on at least one frequency in a frequency band used by the system. Said measurements are carried out to detect if said at least one frequency is being utilized by a transmitter foreign to the system. Preferably, the measurement is enabled by means of the node transmitting a message to other nodes in the system, said message being a message pre-defined within the system as a message prohibiting all nodes from transmitting during a certain interval, said message being transmitted after the system has been detected by the node to be silent during a predefined interval between frame transmissions from the nodes in the system.

[Pauli, Mathias, Dr.] DE,81671 München,Mühldorfstrasse 15;

[FRANK, Georg, PAULI, Mathias, WACHSMANN, Udo, SCHRAMM, Peter]

[KHUN-JUSH JAMSHID, SCHRAMM PETER, LINDSKOG JAN, ROMMER STEFAN, PAULI MATHIAS, ZIMMERMANN GERD, JOHANSSON FREDRIK, RANHEIM ANDERS, LARSSON PETER] SE The invention discloses a method for use in a wireless communications system with a plurality of broadcasting nodes, comprising the step of enabling one node in the system to function as a central node in said system and letting said node enable measurements on at least one frequency in a frequency band used by the system. Said measurements are carried out to detect if said at least one frequency is being utilized by a transmitter foreign to the system. Preferably, the measurement is enabled by means of the node transmitting a message to other nodes in the system, said message being a message pre-defined within the system as a message prohibiting all nodes from transmitting during a certain interval, said message being transmitted after the system has been detected by the node to be silent during a predefined interval between frame transmissions from the nodes in the system.

[DAVIDSSON STEFAN, WALTHER ROGER, WENGER FABIAN, PAULI MATHIAS, SCHRAMM PETER, WACHSMANN UDO] A radio receiver system ( 30 ) comprises a radio receiver ( 41 ), a receiver sample clock ( 60 ), which is used for sampling a modulated base-band signal; and a timing correction unit ( 100 ). The timing correction unit ( 100 ) performs, in the frequency domain, a timing drift compensation between a transmitter sample clock ( 66 ) and the receiver sample clock ( 60 ). In one example context of implementation, the plural modulated radio frequency carriers have been modulated using Orthogonal Frequency Division Multiplexing (OFDM).

[PAULI MATHIAS, WACHSMANN UDO, TSAI SHAWN] SE

[Schramm, Peter, Wachsmann, Udo, Pauli, Mathias, Frank, Georg]

[PAULI MATHIAS DIPL ING, KUCHENBECKER HANS-PETER PROF D, BOER GERRIT DE DIPL ING] DE A method of transmitting orthogonal frequency division multiplex (OFDM) signals in radio networks involves reducing (2) the dynamic response of the OFDM signals (Sr), prior to input into the transmitter amplifier (3), by multiplication with a response reduction function (d). The response reduction function (d) is selected to assume values of less than unity, in the ranges in which the value of the complex envelope of the OFDM signal (Sr) exceeds a given threshold value, and of higher values up to unity, between such ranges.

[MEIXNER MICHAEL, PAULI MATHIAS, HOEGBERG MATS] SE A receiver and a method are applied in a wireless communication system for detecting interference with a coexisting radar system. A signal received from an antenna is fed through an analog part and a subsequent digital part of said receiver. The receiver has an element with a-priori known attenuation values for a predefined set of frequencies, a first branch-off element for deriving a first detection signal from the signal before the element and a second branch-off element for deriving a second detection signal from the signal after the element. The receiver processes the first and the second detection signal such that a difference between the first and second detection signal is comparable with a threshold value, where the threshold value depends on the a-priori known attenuation values of the element. Depending on the comparison result, a frequency is identified as interfering or not a co-existing radar system.

[ZIMMERMANN GERD, LI HUI, WENGER FABIAN, LINDSKOG JAN, PAULI MATHIAS] SE In a packet transmission system, especially wireless transmission system, where data is transmitted in packets at different error protection levels and where the error protection level of one packet (= the succeeding packet) may differ from the error protection level of a preceding packet without providing code termination between the said preceding and the said succeeding packet the performance may degrade in case a different error protection level is used by the preceding packet and the succeeding packet. The invention proposes in these cases to insert a supplementary packet between the preceding and the succeeding packet whereby the error protection level of the supplementary packet is higher than the lowest error protection level that is used either by the preceding or the succeeding packet. ＜IMAGE＞ ＜IMAGE＞