发明名称 |
Frequency hopping spread spectrum system with high sensitivity tracking and synchronization for frequency unstable signals |
摘要 |
A wireless spread spectrum communication system for transmitting data includes a plurality of end point transmitters and at least one receiver. The end point transmitters transmit data via a frequency hopped spread spectrum signal where the transmitting signal is sent without the benefit of frequency stabilization. The receiver is responsive to the frequency hopping spread spectrum signals and includes a correlator and a signal processor. The correlator samples at least a first portion of a preamble of the signal and correlates the portion of the preamble with a known preamble pattern to determine a probability of correlation. The signal processor applies a Fast Fourier Transform algorithm to the signal in response to the probability of correlation to track a narrowband frequency of the signal based on at least a second portion of the preamble and to decode data encoded within the signal subsequent to the preamble. |
申请公布号 |
AU8469101(A) |
申请公布日期 |
2002.02.13 |
申请号 |
AU20010084691 |
申请日期 |
2001.08.01 |
申请人 |
ITRON, INC. |
发明人 |
MARK KENDALL CORNWALL;HARRY PRICE HAAS |
分类号 |
H04B1/709;H04B1/713;H04B1/7156;H04L7/10;H04L12/28 |
主分类号 |
H04B1/709 |
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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