发明名称 |
SYNCHRONIZATION IN MOBILE SATELLITE SYSTEMS USING DUAL-CHIRP WAVEFORM |
摘要 |
A waveform to be transmitted as a burst within a channel that is used for the synchronization of unsynchronized wireless communications terminals in a wireless communications system, and a method of synchronization involving the waveform, that consists of a composite waveform. The composite waveform comprises two or more component waveforms, wherein each of the two or more component waveforms has a known frequency variation throughout the burst. The composite waveform has a composite bandwidth on an order of an available channel bandwidth and each of said two or more component waveforms have a component bandwidth on the order of the available channel bandwidth. Furthermore, a range of values for the differences between the instantaneous frequencies of two of said two or more component waveforms is on an order of twice of said available channel bandwidth.
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申请公布号 |
WO0031899(A9) |
申请公布日期 |
2000.11.23 |
申请号 |
WO1999US27764 |
申请日期 |
1999.11.23 |
申请人 |
HUGHES ELECTRONICS CORPORATION |
发明人 |
VISHWANATH, T., G.;PARR, MICHAEL;SHI, ZHEN-LIANG;ERLICH, SIMHA |
分类号 |
H04B7/212;(IPC1-7):H04B7/212 |
主分类号 |
H04B7/212 |
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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