发明名称 |
PREAMBLE GENERATING DEVICE, PREAMBLE GENERATING METHOD, AND NON-TRANSITORY COMPUTER-READABLE RECORDING MEDIUM STORING A PROGRAM |
摘要 |
A first calculator generates first computational data by reordering elements in at least one of either a real data sequence or an imaginary data sequence constituting a data sequence having a number of elements determined according to a number of elements in a preamble model. A second calculator generates second computational data in which elements of data obtained by applying a fast Fourier transform to the first computational data are spaced apart by a designated number of elements. A preamble generator generates a preamble by multiplying each element of the second computational data by an element of the preamble model at a same position as the each element. A preamble determiner determines on the preamble as a preamble of the transmit signal in a case in which a peak-to-average power ratio of data obtained by applying an inverse fast Fourier transform to the preamble matches a predetermined criterion. |
申请公布号 |
US2015036696(A1) |
申请公布日期 |
2015.02.05 |
申请号 |
US201414311897 |
申请日期 |
2014.06.23 |
申请人 |
Icom Incorporated |
发明人 |
Nishikawa Nobuyoshi |
分类号 |
H04L27/26;H04L29/06 |
主分类号 |
H04L27/26 |
代理机构 |
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代理人 |
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主权项 |
1. A preamble generating device that generates a preamble of a transmit signal, comprising:
a model determiner that determines on a preamble model including a plurality of elements with a value of 0 or 1, according to a preamble requested for generation; a first calculator that generates first computational data by reordering elements in at least one of either a real data sequence that is a real part of a data sequence having a number of elements determined according to a number of elements in the preamble model, or an imaginary data sequence that is an imaginary part of the data sequence; a second calculator that generates second computational data in which elements of data obtained by applying a fast Fourier transform to the first computational data are spaced apart by a designated number of elements, the second computational data having a same number of elements as the number of elements in the preamble model; a preamble generator that generates a preamble by multiplying each element of the second computational data by an element of the preamble model at a same position as the each element; and a preamble determiner that determines on the preamble as a preamble of the transmit signal in a case in which a peak-to-average power ratio of data obtained by applying an inverse fast Fourier transform to the preamble matches a predetermined criterion. |
地址 |
Osaka JP |