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4G: LTE/LTE-Advanced for Mobile Broadband, 2nd Edition by Johan Skold, Stefan Parkvall, Erik Dahlman

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Chapter 6

Scheduling, Link Adaptation, and Hybrid ARQ

Abstract

Channel-dependent scheduling, link adaptation, and hybrid ARQ with soft combining are three basic techniques that are useful for handling rapid variations in the instantaneous radio-link quality in a mobile-communication system. The basics of these techniques are covered in this chapter, while the details on their implementation in LTE are discussed in later chapters.

Keywords

channel-dependent scheduling; link adaptation; hybrid ARQ; retransmission; incremental redundancy; channel-state information

One key characteristic of mobile radio communication is the typically rapid and significant variations in the instantaneous channel conditions. There are several reasons for these variations. ...

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