Method and Device for Processing Received Data of a Radio Interface

Abstract

The invention relates to an apparatus and method for processing received data (I 1/ Q 1, I 2/ Q 2; d 1, d 2 ) of a radio interface, wherein the received data includes a sequence of data which have been transmitted for the purpose of error reduction through different branches of a carrier (R k ) of the radio interface, and which are combined into a sequence of data (DATAOUT) to be outputted, wherein the combining is implemented on the basis of carrier information values (R eq,k , SINR k ) of the different branches (k) relative to each other. A maximum ratio combining (MRC) is implemented in which the amplitudes of the branches of the carrier information (R eq,1 ,(R eq,2 ) are combined using a division method as a function of a disturbance information value (MIX, SINR 1, SINR 2 ) of the branches (k).

1 . A method for processing received data (I 1 /Q 1 , I 2 /Q 2 ; d 1 , d 2 ) of a radio interface, wherein the received data includes a sequence of data which have been transmitted for the purpose of error reduction through different branches of a carrier (R k ) of the radio interface, comprising:
 combining the sequence of data on the basis of carrier information values (R eq,k ) in connection with disturbance information values (MIX, SINR 1 , SINR 2 ; SINR k ) of the different branches (k) relative to each other to provide a data output.   
     
     
         2 . The method of  claim 1 , wherein maximum ratio combining (MRC) is implemented in which the amplitudes of the branches of carrier information (R eq,1 , R eq,2 ) are combined as a function of the disturbance information values (MIX, SINR 1 , SINR 2 ), of the branches (k). 
     
     
         3 . The method of  claim 1 , wherein the combining is implemented by mixing the carrier information based on the disturbance information values (MIX, SINR 1 , SINR 2 ) of the two branches (k) weighted relative to each other. 
     
     
         4 . The method of  claim 1 , wherein the disturbance information (MIX) is determined from signal-to-interference ratios and/or signal-to-noise ratios (SINR 1 , SINR 2 ) of the individual branches (k). 
     
     
         5 . The method of  claim 1 , wherein a disturbance information value is generated by a division of disturbance information components (SINR 1 , SINR 2 ) from different branches (k), in particular, is generated according to the equation
   MIX=SINR 2 /(SINR 1 +SINR 2 ).   
     
     
         6 . The method of  claim 1 , wherein a disturbance information value (MIX) is generated using an approximated division of disturbance information components (SINR 1 , SINR 2 ) of different branches (k), in particular, generated according to the equation
   MIX=( X/ 2 x0 )*(2−(( X+Y )/2 x0 ))
   
       where x0 is the nearest power of 2, and X, Y are the disturbance information components of the different branches. 
     
     
         7 . The method of  claim 1 , wherein the amplitudes of the branches (k) of the carrier information (R eq,1 , R eq,2 ) are determined by a phase correction and a division by an amplitude value of the respective branch (k), in particular, are determined according to the equation
     Req,k=RkejΦk/ak.      
     
     
         8 . The method of  claim 1 , wherein the disturbance information (SINR k ) of a branch (k) is determined by a division of the amplitude, or the square of the amplitude (a k   2 ), of the branch (k) by the disturbance components of the branch, in particular, by the sum of the noise power level (N k ) and the interference power level (I k ) according to the equation
   SINR k = a   k   2 /( N   k + I   k ).   
     
     
         9 . The method of  claim 1 , wherein the branches (k) are generated by different signal transit paths and/or different channels of a single sequence of received data. 
     
     
         10 . The method of  claim 1 , wherein combining is implemented after equalizing, the sequence of data preferably being normalized using the respective channel information, in particular, channel transfer function or channel state information. 
     
     
         11 . The method of  claim 1 , wherein, in order to determine a disturbance information value, an interference power (I) is determined by carrier-based measurements of the average power of a carrier, by using a time derivation of a channel state information value of the carrier, and/or by an estimation of transmitted data. 
     
     
         12 . A device for processing received data of a radio interface, comprising
 a mixer (MC) to combine data of a data sequence, which has been transmitted through different branches (k) of a carrier (R k ), on the basis of a disturbance information value (MIX); and   a mixed signal delivery device (CMC) to supply the disturbance information (MIX) as a mixed signal, wherein the disturbance information is generated from disturbance information components (SINR 1 , SINR 2 ) of the different branches (k).   
     
     
         13 . The device of  claim 12 , wherein the mixed signal delivery device (CMC) has a division device to divide the disturbance information components (SINR 1 , SINR 2 ) of the different branches (k).