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Millimeter Wave Wireless Communications by Robert W. Heath, James N. Murdock, Robert C. Daniels, Theodore S. Rappaport

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Chapter 2. Wireless Communication Background

2.1 Introduction

This chapter provides a background for wireless digital communication, since virtually all modern wireless networks (including those provided by 60 GHz standards and emerging cellular mmWave systems) communicate using binary digital data. We begin by introducing the complex baseband signal representation and its relationship to the wireless medium in Section 2.2. The complex baseband representation provides a convenient, universal framework for representing transmitted waveforms, the propagation channel, and the received signal, without dependence on the carrier frequency. By leveraging the Nyquist sampling theorem, the complex baseband communication model also leads to a convenient ...

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