Method to generate a pseudo random sequence of multi carrier data symbols, and related transmitter and receiver
AssigneeAlcatel
InventorPhilippe Antoine
Life of this patent
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Abstract
To generate a pseudo-random sequence of multi-carrier data symbols, a pseudo-random bit sequence is produced by repetitively generating a pseudo-random sequence of L bits, L being a first integer value. To create a multi-carrier data symbol, N bits are used, N being a second integer value. The pseudo-random bit sequence is subdivided into strings of N′ bits, N′ being a third integer value larger than N, and N bits out of each string of N′ bits are used to generate a respective multi-carrier data symbol. N′-N bits out of each string of N′ bits are left unused.
Claims12
A method to generate a pseudo-random sequence of multi-carrier data symbols, said method comprising:
- producing a pseudo-random bit sequence repetitively generating a pseudo-random sequence of L bits, L being a first integer value;
- packetizing into multi-carrier data symbols thereby using N consecutive bits of said pseudo-random bit sequence per multi-carrier data symbol, N being a second integer number, to thereby generate said pseudo-random sequence of multi-carrier data symbols,
- wherein said packetizing comprises:
- dividing said pseudo-random bit sequence into strings of N′ bits, N′ being a third integer value larger than N, wherein N is greater than or equal to two;
- and
- using N consecutive bits out of each string of N′ bits to generate a multi-carrier data symbol out of said pseudo-random sequence of multi-carrier data symbols, and leaving N′-N bits out of each string of N′ bits unused.
A generator of a pseudo-random sequence of multi-carrier data symbols, said generator comprising:
- scrambling means, adapted to repetitively generate a pseudo-random sequence of L bits, L being a first integer value, to thereby produce a pseudo-random bit sequence;
- packetizing means, adapted to packetize into multi-carrier data symbols, using N consecutive bits of said pseudo-random bit sequence per multi-carrier data symbol, N being a second integer number, to thereby generate said pseudo-random sequence of multi-carrier data symbols,
- wherein said packetizing means comprises:
- dividing means, adapted to divide said pseudo-random bit sequence into strings of N′ bits, N′ being a third integer value larger than N, wherein N is greater than or equal to two;
- and
- multi-carrier data symbol generating means, adapted to use N consecutive bits out of each string of N′ bits to generate a multi-carrier data symbol out of said pseudo-random sequence of multi-carrier data symbols and to leave N′-N bits out of each string of N′ bits unused.
A generator of a pseudo-random sequence of multi-carrier data symbols, said generator, comprising:
- a scrambler that repetitively generates a pseudo-random sequence of L bits, L being a first integer value, to thereby produce a pseudo-random bit sequence;
- a packet generator that packetizes multi-carrier data symbols using N consecutive bits of said pseudo-random bit sequence per multi-carrier data symbol, N being a second integer number, to thereby generate said pseudo-random sequence of multi-carrier data symbols,
- wherein said packet generator comprises:
- a divider that divides said pseudo-random bit sequence into strings of N′ bits, N′ being a third integer value larger than N, and wherein, wherein N is greater than or equal to two;
- and
- a multi-carrier data symbol generator that uses N consecutive bits out of each string of N′ bits to generate a multi-carrier data symbol out of said pseudo-random sequence of multi-carrier data symbols and to leave N′-N bits out of each string of N′ bits unused.
Dependencies are inferred from the claim text.