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1. 发明公开

EP0452289A1 Method of selecting the most suitable receiver antenna from two or more receiver antennas 失效
标题翻译：一种用于选择两个最佳接收天线或多个接收天线的方法。
公开(公告)号：EP0452289A1
公开(公告)日：1991-10-16
申请号：EP91850068.7
申请日：1991-03-14
申请人： TELEFONAKTIEBOLAGET L M ERICSSON
发明人： Ekelund, Björn Olof Peter
IPC分类号： H04B7/08
CPC分类号： H04B7/082
摘要： The invention relates to the selection of an antenna in a receiver of a mobile radio station which forms part of a time-multiplexed radio communication system. The signal strength of each antenna is measured in each time slot which immediately precedes the time slot intended for the station concerned, and the antenna selection is effected in dependence on the measured signal strengths. In order to eliminate the risk of unsuitable antenna selection as a result of momentary falls in signal strength, the signal strength for each antenna is measured on several occasions during the time slot in which the measurements take place. The signal-strength values for each antenna are thereafter combined linearly, so as to form a suitability measurement. The antenna having the highest suitability measurement is selected for the next arriving time slot.
摘要翻译：本发明涉及一种在形成一时间复用的无线电通信系统的一部分的移动无线站的接收器的天线的选择。每个天线的信号强度是在其中立即之前拟用于该时隙的每个时隙测关注站，并且天线选择是在所测量的信号强度依赖性进行。为了消除不适当的天线选择的风险，因为一时的结果，如果在信号强度，每个天线的信号强度多次，其中测量发生时隙测算期间。用于每个天线的信号强度值随后线性地组合，从而形成一个适合的测量。被选择用于下一个到达时隙具有最高适合测量的天线。

2. 发明授权

EP0441110B1 A method of compensating for non-linearities in an end amplifier incorporated in a radio transmitter 失效
标题翻译：一种用于在无线电发射机的功率放大器的非线性的补偿方法。
公开(公告)号：EP0441110B1
公开(公告)日：1995-11-02
申请号：EP90850404.6
申请日：1990-12-13
申请人： TELEFONAKTIEBOLAGET L M ERICSSON
发明人： Ekelund, Björn Olof Peter , Jonsson, Lars Anders
IPC分类号： H03F1/32
CPC分类号： H04L25/03834 , H03C1/06 , H03F1/3241 , H04L27/2071

3. 发明授权

EP0452289B1 Method of selecting the most suitable receiver antenna from two or more receiver antennas 失效
标题翻译：一种用于选择两个最佳接收天线或多个接收天线的方法。
公开(公告)号：EP0452289B1
公开(公告)日：1994-04-20
申请号：EP91850068.7
申请日：1991-03-14
申请人： TELEFONAKTIEBOLAGET L M ERICSSON
发明人： Ekelund, Björn Olof Peter
IPC分类号： H04B7/08
CPC分类号： H04B7/082

4. 发明公开

EP0388381A1 Wave-form generator 失效
标题翻译： Wellenformengenerator。
公开(公告)号：EP0388381A1
公开(公告)日：1990-09-19
申请号：EP90850072.1
申请日：1990-02-20
申请人： TELEFONAKTIEBOLAGET L M ERICSSON
发明人： Ekelund, Björn Olof Peter
IPC分类号： H04L27/18
CPC分类号： H04L27/2017
摘要： A waveform generator incorporated in a radio transmitter of quadrature type for binary continuous phase modulation (CPM). It is previously known to store the waveforms of the two quadrature channels I and Q in two addressable table units, wherein the one unit stores sin and the unit stores cos , where is the phase angle. The table units are addressed by means of a bit history register (BHR) which stores the instantaneous phase, and a quadrant memory which stores the accumulated phase. According to the invention, the two table units are replaced with a single table unit (SCT) which stores curve segments (A-H) solely for one of the waveforms sin or cos . The table unit (SCT) is addressed by means of an address conversion (ADR) between the bit history register/quadrant memory (BHR and QM respectively) and the table unit (SCT). The generator also includes a controllable negation unit (NP) and a latching circuit (LS) upstream of D/A-converters (DA1, DA2) and the modulator circuits (M1. M2, ADD) of the transmitter.
摘要翻译：一个波形发生器，并入二进制连续相位调制（CPM）的正交型无线电发射机。先前已知将两个正交通道I和Q的波形存储在两个可寻址表单元中，其中一个单元存储sin THETA，单元存储cos THETA，其中THETA是相位角。表单元通过存储瞬时相位的位历史寄存器（BHR）和存储累积相位的象限存储器来寻址。根据本发明，两个表单元被替换为单个表单元（SCT），该单表单元单独存储曲线段（A-H），用于波形sin THETA或cos THETA中的一个。表单元（SCT）通过位历史寄存器/象限存储器（分别为BHR和QM）和表单元（SCT）之间的地址转换（ADR）来寻址。发生器还包括发射机的D / A转换器（DA1，DA2）和调制器电路（M1，M2，ADD）上游的可控非负载单元（NP）和锁存电路（LS）。

5. 发明授权

EP0388381B1 Wave-form generator 失效
标题翻译：波形发生器
公开(公告)号：EP0388381B1
公开(公告)日：1993-09-29
申请号：EP90850072.1
申请日：1990-02-20
申请人： TELEFONAKTIEBOLAGET L M ERICSSON
发明人： Ekelund, Björn Olof Peter
IPC分类号： H04L27/18
CPC分类号： H04L27/2017

6. 发明公开

EP0441110A1 A method of compensating for non-linearities in an end amplifier incorporated in a radio transmitter 失效
标题翻译：埃菲尔铁塔公司的无线电广播电台的Verfahren zur Angleichung derNichtlinearitäten。
公开(公告)号：EP0441110A1
公开(公告)日：1991-08-14
申请号：EP90850404.6
申请日：1990-12-13
申请人： TELEFONAKTIEBOLAGET L M ERICSSON
发明人： Ekelund, Björn Olof Peter , Jonsson, Lars Anders
IPC分类号： H03F1/32
CPC分类号： H04L25/03834 , H03C1/06 , H03F1/3241 , H04L27/2071
摘要： A method of compensating for non-linearities in an end amplifier (F) having a given transfer function H R , H φ for amplitude and phase respectively and included in a radio transmitter of quadrature type for linear, digital modulation, and in which table look-up units (ST, CT) store the digital sine and cosine values (I(t, α ), Q(t, α) ) of the quadrature components determined by a given signal vector α . According to the method the values of the transfer functions H R , H φ for the quadrature modulated radio signals r(t, α ) are calculated by addressing memory units (MH1, MH2) which store a number of values of H R and H φ . The sine and cosine values of the addressed values of H R and H φ are also formed. The thus calculated values are multiplied by the stored digital values in the table look-up units (ST, CT) and by the inverted value of H R . As a result, new modified values i(t, α ), q(t, α ) are obtained for the quadrature components, which compensates for the non-linearities in the final amplifier.
摘要翻译：一种补偿具有给定传递函数HR，H phi的幅度和相位的末端放大器（F）中的非线性的方法，分别包括在用于线性，数字调制的正交类型的无线电发射机中，并且其中，（ST，CT）存储由给定信号矢量α确定的正交分量的数字正弦和余弦值（I（t，α），Q（t，α））。根据该方法，通过寻址存储HR和H phi值的存储单元（MH1，MH2）来计算正交调制无线电信号r（t，α）的传递函数HR，H phi的值。还形成HR和H phi的寻址值的正弦和余弦值。将这样计算的值乘以表查找单元（ST，CT）中存储的数字值和HR的反相值。结果，对于正交分量获得新的修正值i（t，α），q（t，α），其补偿最终放大器中的非线性。

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