Method and signal evaluation means for determining the noise part in the signal mix of the reception signal of a CDMA reception means
AssigneeSiemens Aktiengesellschaft
InventorBertram Gunzelmann
Life of this patent
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Abstract
A method and a signal evaluator determine a noise part in a signal mix of a reception signal of a CDMA receiver. An additional spread code with which the reception signal is despread is formed at the reception side in addition to the individual spread codes of the individual CDMA connections. The resulting reference signal is subsequently evaluated and the noise part is determined from the reference signal.
Claims15
A method for determining a noise part in a signal mix of a reception signal for a CDMA receiver, comprising the steps of:
- allocating an individual spread code to each CDMA connection;
- forming an additional spread code;
- despreading the reception signal;
- additionally despreading the reception signal to a reference signal with additional spread code;
- and
- determining a noise part by evaluating the reference signal.
A signal evaluator for a mobile radio telephone system that uses a CDMA principle for determining a noise part in a signal mix of a reception signal, comprising:
- an individual spread code allocated to each CDMA;
- device for forming an additional spread code;
- at least one despreading device for despreading the reception signal and for additionally despreading the reception signal with the additional spread code to form a reference signal;
- and
- an evaluation device for the reference signal for determining the noise part.
A method for determining a noise part in a signal mix of a reception signal for a CDMA receiver, comprising the steps of:
- allocating an individual spread code to each CDMA connection;
- forming an additional spread code;
- despreading the reception signal;
- additionally despreading the reception signal to a reference signal with additional spread code, the despreading being implemented for an in-phase component and for a quadrature component of the reception signal;
- determining a noise part by evaluating the reference signal by superimposition.
Dependencies are inferred from the claim text.