Receiver and method for generating spreading codes in a receiver
First Claim
1. A receiver for use in a system wherein a signal to be transmitted is multiplied with a code sequence characteristic of each connection comprising:
- at least one demodulator means;
means for estimating a channel operatively coupled in parallel with said at least one demodulator means;
means for combining signal components received from said at least one demodulator means; and
plurality of means for generating a code sequence, including a first means for generating a code sequence at a variable phase for said at least one demodulator means, and at least one second means for generating a code sequence having a phase which acts as a reference to said first means.
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Accused Products
Abstract
A method for generating spreading codes in a receiver, and a receiver for use in a system wherein a signal to be transmitted is multiplied with a code sequence characteristic of each connection, wherein the receiver includes an estimator for estimating a channel, at least one demodulator and a combiner for combining signals obtained from at least one demodulator. In order to enable the use of long codes and to facilitate the internal synchronization of the receiver, the receiver includes a number of generators for generating a code sequence, the first generator producing a code sequence at a variable phase, and the second generator producing a code sequence the phase of which acts as a reference to the first generator.
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Citations
11 Claims
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1. A receiver for use in a system wherein a signal to be transmitted is multiplied with a code sequence characteristic of each connection comprising:
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at least one demodulator means; means for estimating a channel operatively coupled in parallel with said at least one demodulator means; means for combining signal components received from said at least one demodulator means; and plurality of means for generating a code sequence, including a first means for generating a code sequence at a variable phase for said at least one demodulator means, and at least one second means for generating a code sequence having a phase which acts as a reference to said first means. - View Dependent Claims (2, 3, 4, 5)
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6. A method for generating a spreading code in a receiver, comprising the steps of:
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multiplying a signal to be transmitted with a code sequence characteristic of a respective connection; receiving a transmission of said signal and seeking receiver signal components transmitted with a desired code from said received transmission including signal components of the received transmission; and measuring the phases of the signal components of the received transmission by correlating the received transmission with a code sequence generated in the receiver; said seeking and said measuring including utilizing at least two code generators respectively in a search of said signal components of the received transmission, multiplied with said desired code, and in said measuring of the phases of the signal components, so that a first code generator produces a variable-phase code sequence, and a second code generator produces a code sequence the phase of which is attached to each respective received signal component. - View Dependent Claims (7, 8, 9, 10, 11)
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Specification