Introduction to Telecommunications, 2/e By M.A.Rosengrant Copyright (c) 2007 by Pearson Education, Inc. All rights reserved. Figure 24–1 CDMA spread spectrum multiplexing schemes manipulate data across a wide frequency spectrum.

Introduction to Telecommunications, 2/e By M.A.Rosengrant Copyright (c) 2007 by Pearson Education, Inc. All rights reserved. Figure 24–2 Universal Mobile Telecommunications Systems are segmented into the User Equipment Domain and the Infrastructure Domain.

Introduction to Telecommunications, 2/e By M.A.Rosengrant Copyright (c) 2007 by Pearson Education, Inc. All rights reserved. Figure 24–3 CDMA2000 networks include the mobile wireless network from the phone to the BTS, the access portion from the tower to the BSC, and the BSC connection to the MSC. The MSC has dedicated links to the PSTN and to the Internet.

Introduction to Telecommunications, 2/e By M.A.Rosengrant Copyright (c) 2007 by Pearson Education, Inc. All rights reserved. Figure 24–4 Peer-to-peer wireless networks are used to connect two devices with Wi-Fi cards.

Introduction to Telecommunications, 2/e By M.A.Rosengrant Copyright (c) 2007 by Pearson Education, Inc. All rights reserved. Figure 24–5 Wi-Fi networks allow multiple devices to interface to one access point that aggregates and routes traffic accordingly.

Introduction to Telecommunications, 2/e By M.A.Rosengrant Copyright (c) 2007 by Pearson Education, Inc. All rights reserved. Figure 24–6 Wi-Fi networks often tie into WiMAX networks that carry traffic across the metropolitan region.