发明名称 |
Adaptive threshold in a spread spectrum communications system |
摘要 |
A transceiver for transmitting and receiving spread spectrum signals having an adaptive threshold for distinguishing between valid receive data signals and noise. The transceiver includes a transmitter for transmitting spread spectrum signals and a receiver for receiving spread spectrum signals. A correlator correlates a received signal against an expected receive pattern. The correlation of the received signal is compared to a threshold value. If the correlation exceeds the threshold value, a carrier detect signal is generated. The number of false carrier detect signals occurring within a pre-determined period of time is determined. The threshold value is varied according to the number of false carrier detects.
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申请公布号 |
US5263050(A) |
申请公布日期 |
1993.11.16 |
申请号 |
US19920942646 |
申请日期 |
1992.09.09 |
申请人 |
ECHELON CORPORATION |
发明人 |
SUTTERLIN, PHILIP H.;HURLBUT, AMY O. |
分类号 |
H04B1/707;(IPC1-7):H04L27/30;H04K1/00 |
主分类号 |
H04B1/707 |
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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