Method for generating communication signal sequences having desirable correlation properties and system for using same
First Claim
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1. A method of generating communication signals comprising the steps of:
- selecting a code length, said code length comprising a plurality of chips, wherein each chip of said plurality of chips is one of a non-zero value and a zero value; and
arraying said plurality of chips such that there is a plurality of said zero values within said plurality of chips and one or more said non-zero values is arrayed in accordance with a ruler.
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Abstract
A method for generating code sequences having good correlation properties comprising steps of selecting a code length comprising a number of chips, selecting a ruler which defines the position of non-zero values within the chips, and overlaying the non-zero values with an amplitude pattern.
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Citations
43 Claims
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1. A method of generating communication signals comprising the steps of:
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selecting a code length, said code length comprising a plurality of chips, wherein each chip of said plurality of chips is one of a non-zero value and a zero value; and
arraying said plurality of chips such that there is a plurality of said zero values within said plurality of chips and one or more said non-zero values is arrayed in accordance with a ruler. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for generating a set of communication signal sequences comprising the steps of:
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defining said set such that all of said communications signal codes in said set have a code length, said code length comprising a plurality of chips, each of said chips having a value, said value being one of a positive value, a negative value and a zero value;
arraying said chips such that at least one said positive value and at least one said negative value is placed in accordance with a ruler, said ruler being substantially orthogonal to all time-shifted versions of said ruler, and such that at least one of said chips has a zero value; and
arraying said chips such that said at least one positive value and said at least one negative value are placed in accordance with a pattern, said pattern being from a family of binary patterns wherein each pattern within said family of patterns is substantially orthogonal to substantially all time-shifted versions of each other pattern within said family of patterns. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A radio communication system comprising:
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a radio transmitter; and
a radio receiver, said transmitter and said receiver employing a communications signal having a code length, said code length comprising a plurality of chips, wherein each chip of said plurality of chips is one of a non-zero value and a zero value, and wherein said chips are arrayed such that there is a plurality of zero values within said plurality of chips and one or more said non-zero values is arrayed in accordance with a ruler. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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Specification