发明名称 |
Symbol determining method and apparatus |
摘要 |
The level of a symbol information in a symbol-sync part transmitted for the purpose of synchronizing a receiver of a digital radio communications system reflects the state of the concurrent transmission. With this factor taken in account, a symbol determining method is provided which comprises the steps of receiving a symbol information extracted from a symbol-sync part of a received signal obtained by demodulating a received wave and digitizing it; generating thresholds for use to determine the value of the received symbol based on the reception level of the symbol information; determining the value of the received symbol in the data part of the received data based on the thresholds; and reproducing the symbol. Therefore, even if a received symbol is deteriorated due to a degradation, etc. of transmission line, a symbol determination can be done with no degradation of the signal reception due to a narrowing of noise margin, etc.
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申请公布号 |
US5898734(A) |
申请公布日期 |
1999.04.27 |
申请号 |
US19970790751 |
申请日期 |
1997.01.27 |
申请人 |
KOKUSAI ELECTRIC CO., LTD. |
发明人 |
NAKAMURA, KIYOFUMI;KANEDA, KINARI |
分类号 |
H04L27/38;H04L25/03;H04L25/06;H04L25/34;H04L27/22;(IPC1-7):H04L25/34;H04L25/49 |
主分类号 |
H04L27/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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