Method and system for adapting an effective spreading sequence in a communication system using direct sequence spreading
First Claim
1. A method for adapting an effective spreading sequence in a communication system, comprising:
- determining a state of a communication channel;
determining a plurality of linearly related phases in accordance with the state of the communication channel; and
applying at least one of the plurality of linearly related phases to at least one sample of the effective spreading sequence.
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Abstract
A method and system for adapting an effective spreading sequence in a wire-line or a wireless communication system using direct sequence spreading system is described. A station of the communication system determines a state of a communication channel, represented by, e.g., an impulse response, a step response, or any other characteristic known to one skilled in the art. The station determines the channel state by measurements of a received signal or by receiving a feedback signal comprising an information enabling the station to determine the plurality of linearly related phases The station then determines a plurality of linearly related phases in accordance with the state of the communication channel, and then applies at least one of the plurality of linearly related phases to at least one sample of the effective spreading sequence.
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Citations
70 Claims
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1. A method for adapting an effective spreading sequence in a communication system, comprising:
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determining a state of a communication channel;
determining a plurality of linearly related phases in accordance with the state of the communication channel; and
applying at least one of the plurality of linearly related phases to at least one sample of the effective spreading sequence. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An apparatus for adapting an effective spreading sequence in a communication system, comprising:
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means for determining a state of a communication channel;
means for determining a plurality of linearly related phases in accordance with the state of the communication channel; and
means for applying at least one of the plurality of linearly related phases to at least one sample of the effective spreading sequence. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A method for adapting an effective spreading sequence in a communication system, comprising:
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receiving a feedback signal comprising information enabling determination of a plurality of linearly related phases;
determining the plurality of linearly related phases in accordance with the feedback; and
applying at least one of the plurality of linearly related phases to at least one sample of the effective spreading sequence. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
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53. An apparatus for adapting an effective spreading sequence in a communication system, comprising:
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means for receiving a feedback signal comprising information enabling determination of a plurality of linearly related phases;
means for determining the plurality of linearly related phases in accordance with the feedback; and
means for applying at least one of the plurality of linearly related phases to at least one sample of the effective spreading sequence. - View Dependent Claims (54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70)
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Specification