发明名称 |
Method and apparatus for interference suppression in spread spectrum signals |
摘要 |
Interference removal in spread spectrum signals, comprises the steps at a spread spectrum transmitter (10) of spreading information across a predetermined spectrum by phase modulating a repeating noise sequence (18), providing a spread spectrum signal and transmitting the spread spectrum signal. The method further comprises the steps at a receiver of receiving the spread spectrum signal along with interference (41) multiplying (42) the spread spectrum signal along with interference by a window function (44) providing a multiplied spread spectrum signal. The information is recovered by despreading the multiplied (48) spread spectrum signal using a reciprocal (50) of the spectrum of the repeating noise sequence to obtain a data spectrum with interference and subsequently normalize (52) to obtain a clean data spectrum. Alternatively the information can be recovered by substituting a corrupted magnitude spectrum with a prestored PN sequence magnitude spectrum (70) as shown by receiver (60).
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申请公布号 |
US5671247(A) |
申请公布日期 |
1997.09.23 |
申请号 |
US19950547354 |
申请日期 |
1995.10.24 |
申请人 |
MOTOROLA, INC. |
发明人 |
SOUISSI, SLIM;GEHMAN, JOHN B. |
分类号 |
H04B1/707;(IPC1-7):H04B15/00;H04K1/00;H04L27/30 |
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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