Zero delay interference cancellation
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsJonas Karlsson, Riaz Esmailzadeh
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Abstract
Method and apparatus for minimizing the processing delay incurred by an IC receiver over conventional receivers in a CDMA cellular system are disclosed. The method and apparatus involve operating the conventional receiver and the IC receiver in parallel to each other. Data from the conventional receiver are then used to supplement data from the IC receiver in order to minimize the delays incurred by the IC receiver.
Claims14
A method of reducing signal processing delay time in a CDMA cellular communications system, the method comprising:
- processing a data frame according to a first process;
- simultaneously processing said data frame according to a second process in parallel to said first process, wherein said second process uses an interference cancellation algorithm;
- and
- combining selected segments of said data frame processed according to said first process with selected segments of said data frame simultaneously processed according to said second process, wherein data generated from processing said data frame by said first processor supplements data generated from processing said data frame by said second processor to minimize delays otherwise incurred by said interference cancellation algorithm.
A signal receiving apparatus for reducing signal processing delay time in a CDMA cellular communications system, comprising:
- a first processor for processing a data frame;
- a second processor for simultaneously processing said data frame in parallel to said first processor, wherein said second processor uses an interference cancellation algorithm;
- and
- a selector coupled to said first and second processors, said selector adapted to combine selected segments of said data frame processed by said first processor with selected segments of said data frame simultaneously processed by said second processor, wherein data generated from processing said data frame by said first processor supplements data generated from processing said data frame by said second processor to minimize delays otherwise incurred by said interference cancellation algorithm.
Dependencies are inferred from the claim text.