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在信道编码中，卷积码是一种（  ）。

问题1选项
A.无记忆性分组码
B.无记忆性非分组码
C.记忆性分组码
D.记忆性非分组码
参考答案： 查看答案 查看解析 APP刷题
相关知识点试题
按信道特性参数随时间变化的速度，可以将信道分为（ ）。
Including communication, sensing, and computing. However, the complex and dynamic satellite environments and limited network resources pose new challenges in the design of satellite IoT systems.In the fifth generation (5G) wireless communications, the 3GPP (3rd Generation Partnership Project) has defined a key application scenario named massive machine type communications (mMTC), which refers to the communication between a vast number of devices and a base station (BS) 。 In mMTC, the access point (AP) , for example, the BS in a cellular system, is needed to manage the connections of the devices. However, due to commercial and engineering difficulties, it is impractical to deploy APs over remote areas, such as deserts, forests, and oceans. As such, the coverage of terrestrial IoT is limited.The Low Earth Orbit (LEO) satellite is a potential enabler to achieve the global coverage of IoT. It is reported that the LEO satellite constellation is expected to contain thousands of satellites to provide global communication services. For example, the Starlink constellation is designed to consist of about 42,000 satellites in total, and more than 3,400 satellites have been launched. Compared with the existing terrestrial IoT systems, the satellite IoT naturally supports the coverage of remote areas, and is more robust in different terrestrial environments, such as floods and earthquakes where terrestrial APs fail to work.Besides the communication needs, various sensing services, such as environment monitoring, geographical survey, and situational awareness, are expected to be realized by the satellite IoT. With high-speed motion and wide-band transmission, the satellite system is able to support remote sensing in real time. The widely distributed terrestrial sensors can also sense environmental objectives. In addition, the fast-growing artificial intelligence (AI) , represented by deep learning, reinforcement learning, distributed learning, and so on, has shown great potential for innovation in various fields such as communication network optimization and intelligent sensing. To establish an intelligent system, computing capability is necessary for the satellite IoT system to deploy AI. The satellite equipped with high-performance central processing units (CPUs) can be seen as a server of mobile edge computing (MEC) , to which the terrestrial devices can offload their computing tasks so as to enable AI and other computation-intensive and latency-critical applications.1.Satellite Internet of Things (IoT) requires the use of satellites as（ ）for IoT devices for achieving global coverage of future IoT systems.2.The meaning of the word“massive”in the second line of the second paragraph is（ ）.3.The Starlink constellation is designed to consist of about 42,000 satellites in total, and more than 3,400 satellites（ ）.4.With high-speed motion and wide-band transmission, the satellite system is able to support remote sensing（ ）.5.The satellite equipped with high-performance central processing units (CPUs) can be seen as（ ）, to which the terrestrial devices can offload their computing tasks so as to enable AI and other computation-intensive and latency-critical applications.
Labor is still indispensable in the era of industrial automation. However, going forward, humanoid robots can collaborate with traditional automation equipment to（ ）complex scenarios of flexible unmanned operation, and independently complete difficult tasks, such as torque tightening and material handling.
Autonomous driving, augmented reality, and virtual reality are among new service（ ）are designed to boost network efficiency and amplify the need for 5G infrastructure, according to the report.
Compared（ ）5G, 5G-A technology features 10 times enhancement in network capabilities such as connection speed and latency, as an enhancement to 5G and a connection to 6G.
In the era of burgeoning digital economy, data is essential for the development of new quality productive forces, which has become a（ ）element of production.
The value of data in circulation and transactions is immense, but there are still challenges such as circulation bottlenecks,（ ）trading systems and an incomplete ecosystem for the industry chain.
including communication, sensing, and computing. However, the complex and dynamic satellite environments and limited network resources pose new challenges in the design of satellite IoT systems.In the fifth generation (5G) wireless communications, the 3GPP (3rd Generation Partnership Project) has defined a key application scenario named massive machine type communications (mMTC), which refers to the communication between a vast number of devices and a base station (BS) 。 In mMTC, the access point (AP) , for example, the BS in a cellular system, is needed to manage the connections of the devices. However, due to commercial and engineering difficulties, it is impractical to deploy APs over remote areas, such as deserts, forests, and oceans. As such, the coverage of terrestrial IoT is limited.The Low Earth Orbit (LEO) satellite is a potential enabler to achieve the global coverage of IoT. It is reported that the LEO satellite constellation is expected to contain thousands of satellites to provide global communication services. For example, the Starlink constellation is designed to consist of about 42,000 satellites in total, and more than 3,400 satellites have been launched. Compared with the existing terrestrial IoT systems, the satellite IoT naturally supports the coverage of remote areas, and is more robust in different terrestrial environments, such as floods and earthquakes where terrestrial APs fail to work.Besides the communication needs, various sensing services, such as environment monitoring, geographical survey, and situational awareness, are expected to be realized by the satellite IoT. With high-speed motion and wide-band transmission, the satellite system is able to support remote sensing in real time. The widely distributed terrestrial sensors can also sense environmental objectives. In addition, the fast-growing artificial intelligence (AI) , represented by deep learning, reinforcement learning, distributed learning, and so on, has shown great potential for innovation in various fields such as communication network optimization and intelligent sensing. To establish an intelligent system, computing capability is necessary for the satellite IoT system to deploy AI. The satellite equipped with high-performance central processing units (CPUs) can be seen as a server of mobile edge computing (MEC) , to which the terrestrial devices can offload their computing tasks so as to enable AI and other computation-intensive and latency-critical applications.1.Satellite Internet of Things (IoT) requires the use of satellites as（ ）for IoT devices for achieving global coverage of future IoT systems.2.The meaning of the word“massive”in the second line of the second paragraph is（ ）.3.The Starlink constellation is designed to consist of about 42,000 satellites in total, and more than 3,400 satellites（ ）.4.With high-speed motion and wide-band transmission, the satellite system is able to support remote sensing（ ）.5.The satellite equipped with high-performance central processing units (CPUs) can be seen as（ ）, to which the terrestrial devices can offload their computing tasks so as to enable AI and other computation-intensive and latency-critical applications.
Labor is still indispensable in the era of industrial automation. However, going forward, humanoid robots can collaborate with traditional automation equipment to（ ）complex scenarios of flexible unmanned operation, and independently complete difficult tasks, such as torque tightening and material handling.
Autonomous driving, augmented reality, and virtual reality are among new service（ ）are designed to boost network efficiency and amplify the need for 5G infrastructure, according to the report.
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