SPREAD SPECTRUM SIGNAL PROCESSING
First Claim
1. A software receiver comprising:
- a receiver capable of receiving a radio signal;
means for digitizing the radio signal; and
a software correlator capable of mixing the digitized radio signal to form a baseband signal using bit-wise parallelism.
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Accused Products
Abstract
The present invention relates to processing of spread spectrum signals, where a continuous signal of a comparatively high frequency is received. This signal is sampled at a basic sampling rate whereby a resulting sequence of time discrete signal samples is produced, which are in turn quantised into a corresponding level-discrete sample value. A plurality of data words are formed, which each includes one or more consecutive sample values. Information obtained from these data words is correlated with at least one representation of a signal source specific code sequence, which has been pre-generated in the form of a code vector. The correlation step specifically involves correlating at least each vector in a sub-group of the code vectors with at least one vector that has been derived from the data word. Thereby resulting data is produced.
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Citations
7 Claims
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1. A software receiver comprising:
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a receiver capable of receiving a radio signal;
means for digitizing the radio signal; and
a software correlator capable of mixing the digitized radio signal to form a baseband signal using bit-wise parallelism. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification