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Evaluation system for shock response complex envelope in transmission path testing - correlating transmitted and received m-sequence signals and using generated sequence at receiver having higher symbol rate
Evaluation system for shock response complex envelope in transmission path testing - correlating transmitted and received m-sequence signals and using generated sequence at receiver having higher symbol rate
The testing uses a linear feedback shift register within a transmitter to provide an m-sequence signal with 2N-1 symbols having an auto-correlation function free of auxiliary correlation peaks. A baseband signal incorporating the m-sequence signal is inserted in the carrier frequency band and used as a transmission signal fed along the transmission path and is correlated at the reception end with the same m-sequence signal. The m-sequence signal at the receiver has a higher symbol rate which is a whole multiple of greater than 2 of the symbol rate at the transmitter. USE/ADVANTAGE - For testing mobile radio transmission path with evaluation of weak signal echoes.
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机译:该测试使用发射机内的线性反馈移位寄存器来提供具有2 N -1个符号的m序列信号,该符号具有自相关函数而没有辅助相关峰。合并了m序列信号的基带信号被插入到载波频带中,并且被用作沿着传输路径馈送的传输信号,并且在接收端与相同的m序列信号相关。接收机处的m序列信号具有较高的符号率,该符号率是发射机中符号率的2的整数倍。用途/优点-用于评估弱信号回波以测试移动无线电传输路径。
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