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31. 发明授权

US4320514A Spread spectrum FH-MFSK radio receiver 失效
标题翻译：扩频FH-MFSK无线电接收机
公开(公告)号：US4320514A
公开(公告)日：1982-03-16
申请号：US157266
申请日：1980-06-09
申请人： Barin G. Haskell
发明人： Barin G. Haskell
IPC分类号： H04B1/713 , H04B1/7143 , H04B1/715 , H04B7/12
CPC分类号： H04B1/7143 , H04B1/713 , H04B1/715
摘要： The present invention relates to a spread spectrum, FH-MFSK radio receiver capable of demodulating and decoding one or more concurrently received L-length frequency-hopping, Q level frequency shift keyed signals to determine the correct signal of a particular user. In operation, the receiver spectrum analyzes the received signal to determine which frequency components are present during each of the L chip intervals and then demodulates a particular user's L-length FH address signal with the derived frequency components to arrive at a Q by L-length detection matrix. A detector and checking processor determines which L-length matrix rows have a maximum number of entries and if only one such row exists, that level is deemed the correct message level. Where multiple maximum-length rows are found the processor uses the address sequences of all other users to check if the row entries could have been caused by interference. The row with the minimum matches is deemed the correct message level.
摘要翻译：扩展频谱FH-MFSK无线电接收机本发明涉及能够解调和解码一个或多个同时接收的L长度跳频，Q电平频移键控信号以确定特定用户的正确信号的扩展频谱FH-MFSK无线电接收机。在操作中，接收机频谱分析接收到的信号以确定在每个L个码片间隔期间存在哪些频率分量，然后用导出的频率分量解调特定用户的L长度FH地址信号，以通过L长度来达到Q 检测矩阵。检测器和检查处理器确定哪个L长度矩阵行具有最大数量的条目，并且如果仅存在一个这样的行，则该级别被认为是正确的消息级别。在找到多个最大长度行的情况下，处理器使用所有其他用户的地址序列来检查行条目是否可能是由干扰引起的。具有最小匹配的行被认为是正确的消息级别。

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