Genteel
发表于 2025-3-28 18:02:23
Douglas H. Moraisnalysis is quite satisfactory for determining the appearance of the one-dimensional NMR spectrum of the coupled spins. However, this approach is completely impractical for calculations on an ensemble of spins that are subject to multiple excitation pulses in typical NMR experiments. Consequently, we
NAUT
发表于 2025-3-28 22:00:12
istence of such a peak indicates that the participating spins are coupled to one other by scalar (J) coupling through chemical bonds or via dipolar coupling through space. The position of the peak is defined by the chemical shifts, or resonance frequencies, of the coupled spins..In this chapter we w
arboretum
发表于 2025-3-29 00:05:51
Mobile and Fixed Wireless Cellular Systems Introduction,story of their evolution. Finally, several key cellular systems coverage methods relevant to 5G deployment are reviewed to help establish the environment that mobile and fixed wireless networks operate in.
杂役
发表于 2025-3-29 03:07:45
Broadband Wireless Payload: Packet-Switched Data,Protocol/Internet Protocol, or TCP/IP. The physical data link protocol associated with TCP/IP in the 5G world is the Ethernet protocol. This chapter reviews TCP/IP and the Ethernet protocol, and, since voice- and video-generated data are some of the more commonly transported via the Internet to and
听写
发表于 2025-3-29 09:15:05
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改变
发表于 2025-3-29 13:31:29
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原告
发表于 2025-3-29 17:40:19
Digital Modulation: The Basic Principles, study in this chapter, along with some issues involved in their realization. In these methods, baseband signals linearly modulate an RF carrier. Ideally, we would like to cut to the chase and study these methods immediately. This is not what we will do, however. First the fundamentals of baseband t
等待
发表于 2025-3-29 22:21:03
Channel Coding and Link Adaptation,n or correction or errors incurred by such useful bits as a result of their transmission over a non-ideal channel. Such a channel, for example, may be one that adds noise, or interference, or unwanted nonlinearities. In this chapter we focus on error detection and error correction coding as applied
Frisky
发表于 2025-3-30 03:56:54
Multi-Carrier-Based Multiple-Access Techniques,plies communication via a plurality of radio-frequency carriers, normally referred to as subcarriers. In this chapter we explore multi-carrier-based multiple-access techniques as applicable to 5G NR. First, we review orthogonal frequency division multiplexing (OFDM). OFDM is a multi-carrier techniqu