摘要:
The invention relates to a method for localization of mobile stations, a receiver station (RS1) comprising an antenna array (AA1) with at least two antenna elements (AE1, AE2). The method comprises the step of calculating at the receiver station (RS1) a first receive direction (RD1) for at least a first uplink signal (ULS) received from a mobile station (MS) and for a first position (POS1) of the at least two antenna elements (AE1, AE2), wherein the method further comprises the steps of calculating at the receiver station (RS1) a second receive direction (RD2) for at least a second uplink signal (ULS) received from the mobile station (MS) and for a second position (POS2) of the at least two antenna elements (AE1, AE2), and calculating at the receiver station (RS1) a mobile station position (MSPOS) of the mobile station (MS) depending on the first and the second receive direction (RD1, RD2).
摘要:
The invention relates to a method of providing a multi-carrier signal (mc) comprising a plurality of single-carrier signals (sc_1, .., sc_m), wherein m many single-carrier signals (sc_1, .., sc_m) are combined to obtain said multi-carrier signal (mc). According to the present invention, said method is characterized by: - providing n many instances (mc1_1, .., mc1_n) of a first stage multi-carrier signal by combining said m many single-carrier signals (sc_1, .., sc_m) within a first combining stage, wherein said n many instances (mc1_1, .., mc1_n) of said first stage multi-carrier signals have a predetermined amplitude and phase relationship to each other, - combining said n many instances (mc1_1, .., mc1_n) of said first stage multi-carrier signal to obtain said multi-carrier signal (mc).
摘要:
The invention relates to an amplifier with a first electric line (119) having a first frequency-dependent electric length and a second electric line (123) having a second frequency dependent length, the first electric line (119) being electrically connectable to an input (117) of the amplifier and the second electric line (123) being electrically connectable to an output (121) of the amplifier to adjust a frequency for amplification
摘要:
The present invention relates to a transmitter for simultaneously transmitting plural signals. The transmitter comprises at least two converters 10a and 10b. Each converter 10a and 10b is adapted to convert an input signal into an analogue output signal. Each of said analogue output signals has a particular carrier frequency A combiner 40 combines the analogue signals from the converters 10a and 10b. The combiner 40 receives the analogue signals and outputs a single combined analogue signal. An amplifier (20) receives the combined analogue signal and outputs an amplified analogue signal to an antenna.
摘要:
A method is described for performing a linearization and an image-suppression algorithm in a broadband multi-band transmitter chain (10) that comprises a broadband feedback-path (33, 34, 24) providing a broadband feedback signal, wherein said method is characterized in that said linearization and image-suppression algorithms periodically are fed with said feedback signal for the duration of individual discrete time windows, in order to provide both algorithms with individual parts of said feedback signal that are free of linearization and/or image non-conformances due to time delay of said non-conformances within said feedback signal. Furthermore a transmitter chain (10) to be used to execute the method mentioned above, plus a base station comprising such a transmitter chain (10) is described.