Abstract: The development of the Internet, big data technology and e-commerce has laid the foundation and provided opportunities for the transformation and upgrading of the logistics industry.

Abstract: Multiple-input multiple-output orthogonal time frequency space (MIMO-OTFS) systems have gained increasing attention due to their superior performance in double-selective channel scenarios.

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Define an interface for creating an object using the Factory Method Pattern, but let subclasses decide which class to instantiate. This creational design pattern lets a class defer instantiation to ...