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US 7,003,016 B1Granted
Maximum likelihood timing synchronizers for sampled PSK burst TDMA system
AssigneeTexas Instruments Incorporated
InventorsSrinath Hosur, Anand G. Dabak
Life of this patent
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Abstract
A method of producing a correction signal includes receiving a predetermined data sequence (500). The data sequence is sampled at predetermined times, thereby producing a sampled data sequence (522, 532). The sampled data sequence is separated into first and second sampled data sequences. A ratio is calculated (550, 558) from the first and second sampled data sequences. A correction signal is produced (556, 564) in response to the ratio.
Claims22
A method of producing a correction signal, comprising the steps of:
- receiving a predetermined data sequence;
- sampling the data sequence at predetermined times, thereby producing a sampled data sequence;
- separating the sampled data sequence into first and second sampled data sequences;
- calculating a ratio from the first and second sampled data sequences;
- and
- producing a correction signal in response to the ratio.
3 more elements
A method, comprising the steps of:
- receiving a predetermined sequence of data symbols, each data symbol having a predetermined period;
- producing at least two samples of each data symbol during the predetermined period;
- adding a first of the at least two samples of each data symbol, thereby producing a first sum;
- adding a second of the at least two samples of each data symbol, thereby producing a second sum;
- calculating a ratio from the first sum and the second sum;
- and
- producing at least one correction signal in response to the ratio.
4 more elements
A method, comprising the steps of:
- receiving a predetermined sequence of data symbols, each data symbol having a predetermined period;
- producing at least two samples of each data symbol during the predetermined period;
- adding a first of the at least two samples of each data symbol, thereby producing a first sum;
- adding a second of the at least two samples of each data symbol, thereby producing a second sum;
- calculating a first ratio from the first sum and the second sum;
- calculating a second ratio different from the first ratio from the first sum and the second sum;
- producing a symbol timing correction signal in response to the first ratio;
- and
- producing a carrier phase correction signal in response to the second ratio.
6 more elements
Dependencies are inferred from the claim text.