This book provides a comprehensive, up-to-date description of the methodologies and the application areas, throughout the range of digital communication, in which individual signals and sets of signals with favorable correlation properties play a central role. The necessary mathematical background is presented to explain how these signals are generated, and to show how they satisfy the appropriate correlation constraints. All the known methods to obtain balanced binary sequences with two-valued autocorrelation, many of them only recently discovered, are presented in depth. The authors treat important application areas including: Code Division Multiple Access (CDMA) signals, such as those already in widespread use for cell-phone communication, and planned for universal adoption in the various approaches to 'third-generation'(3G) cell-phone use; systems for coded radar and sonar signals; communication signals to minimize mutual interference ('cross-talk') in multi-user environments; and pseudo-random sequence generation for secure authentication and for stream cipher cryptology.

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传统 20 脚 JTAG 底座个头大，占用 PCB 面积多，连接线复杂。基于STM32F103C8T 的 SW 模式Jlink，只需要三根线即可与目标板实现通讯，可实现程序下载，单步调试等功能，除了不能检测目标板电压、不能给目标板供电、速度有所降低之外，与完整版 JLink 的功能是一样的。当然，成本也可以降低很多。文件介绍了详细的制作教程，也包含了所需要的固件。（教程是之前下载的，属于转载内容）

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