| 摘要 |
The receiver includes a reception part (1) which is tuneable in a first operating condition of the receiver on a radio signal, and which produces a reception signal (a). A decoder circuit (2a, 2b) reproduces a symbol sequence from the reception signal in the first operating condition through forming a scalar product of the reception signal with a spread-code (b) generated by a code generator (5). The reception part is tuneable in a second operating condition on a second radio signal of a second message transmission system which does not transmit a band-width spread signal. The code generator produces in the second operating condition a second code which differs in average from zero, and the decoder circuit uses this code in the second operating condition to form the scalar product of the reception signal. The decoder circuit is a preferably a Rake receiver.
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