Method and apparatus for generating and transmitting code sequence in a wireless communication system
DC CAFCFirst Claim
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1. A method for transmitting a code sequence from a transmitting party to a receiving party in a wireless communication system, the method comprising:
- acquiring a code sequence having a second length by a cyclic extension of a code sequence having a first length;
performing a circular shift to the code sequence having the second length; and
transmitting the circular shifted code sequence having the second length to the receiving party,wherein the first length is a largest prime number smaller than the second length, andwherein the cyclic extension of the code sequence having the first length is performed such that a part of the code sequence having the first length, having a length corresponding to a difference between the first length and the second length, is added to either a start or an end of the code sequence having the first length, andwherein the circular shift is performed to the code sequence having the second length such that either a rear portion of the code sequence having the second length moves to a start of the code sequence having the second length, or a front portion of the code sequence having the second length moves to an end of the code sequence having the second length.
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Abstract
A method of generating a code sequence in a wireless communication system is disclosed. More specifically, the method includes recognizing a desired length of the code sequence, generating a code sequence having a length different from the desired length, and modifying the length of the generated code sequence to equal the desired length. Here, the step of modifying includes discarding at least one element of the generated code sequence or inserting at least one null element to the generated code sequence.
57 Citations
11 Claims
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1. A method for transmitting a code sequence from a transmitting party to a receiving party in a wireless communication system, the method comprising:
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acquiring a code sequence having a second length by a cyclic extension of a code sequence having a first length; performing a circular shift to the code sequence having the second length; and transmitting the circular shifted code sequence having the second length to the receiving party, wherein the first length is a largest prime number smaller than the second length, and wherein the cyclic extension of the code sequence having the first length is performed such that a part of the code sequence having the first length, having a length corresponding to a difference between the first length and the second length, is added to either a start or an end of the code sequence having the first length, and wherein the circular shift is performed to the code sequence having the second length such that either a rear portion of the code sequence having the second length moves to a start of the code sequence having the second length, or a front portion of the code sequence having the second length moves to an end of the code sequence having the second length. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus for transmitting a code sequence in a wireless communication system, the apparatus comprising:
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a code sequence generator for generating a code sequence having a second length by cyclic extension of a code sequence having a first length, and performing a circular shift to the code sequence having the second length; and a transmitting unit for transmitting the circular shifted code sequence having the second length, wherein the first length is a largest prime number smaller than the second length, wherein the cyclic extension of the code sequence having the first length is performed such that a part of the code sequence having the first length, having a length corresponding to a difference between the first length and the second length, is added to either a start or an end of the code sequence having the first length, and wherein the circular shift is performed to the code sequence having the second length such that either a rear portion of the code sequence having the second length moves to a start of the code sequence having the second length, or a front portion of the code sequence having the second length moves to an end of the code sequence having the second length. - View Dependent Claims (7, 8, 9, 10)
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11. A method for transmitting a code sequence in a wireless communication system, the method comprising:
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performing a circular shift to a code sequence having a first length to produce a circularly-shifted code sequence having the first length; performing a cyclic extension of the circularly-shifted code sequence having the first length, to produce a code sequence having a second length; and transmitting the code sequence having the second length, wherein the first length is a largest prime number smaller than the second length, wherein performing the circular shift comprises either moving a rear portion of the code sequence having the first length to a start of the code sequence having the first length, or moving a front portion of the code sequence having the first length to an end of the code sequence having the first length, and wherein performing the cyclic extension comprises adding a portion of the circularly-shifted code sequence having the first length, having a length corresponding to a difference between the first length and the second length, to either a start or an end of the circularly-shifted code sequence having the first length.
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Specification