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Wireless Communications & Networking by Vijay Garg

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CHAPTER 6 Multiple Access Techniques

6.1 Introduction

In Chapter 5 we discussed that cellular systems divide a geographic region into cells where mobile units in each cell communicate with the cell’s base station. The goal in the design of a cellular system is to be able to handle as many calls as possible in a given bandwidth with the specified blocking probability (reliability).

Multiplexing deals with the division of the resources to create multiple channels. Multiplexing can create channels in frequency, time, etc., and the corresponding terms are then frequency division multiplexing (FDM), time division multiplexing (TDM), etc. [1, 3]. Since the amount of spectrum available is limited, we need to find ways to allow multiple users to share ...

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