发明名称 |
Minimization of multipath and doppler effects in radiant energy communication systems |
摘要 |
Apparatus is disclosed for reproducing transmitted information which is subject to multipath delay spread effects and doppler frequency-shift effects. The information is transmitted as a series of modulated information pulses of differing nominal frequencies. The nominal frequencies of successive pulses are repeatedly shifted through a predetermined sequence of frequencies. Arrivals of the transmitted pulses are detected at a receiver and are processed to determine the frequencies to which the transmitted pulses are doppler shifted and the multipath delays of each pulse. This frequency and delay information is then used to reproduce the transmitted information from the arrival pulses.
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申请公布号 |
US4349915(A) |
申请公布日期 |
1982.09.14 |
申请号 |
US19810230813 |
申请日期 |
1981.02.02 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
COSTAS, JOHN P. |
分类号 |
H04B7/005;H04L1/04;(IPC1-7):H04L1/04 |
主分类号 |
H04B7/005 |
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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