O'Reilly logo

Principles of LED Light Communications by Harald Haas, Svilen Dimitrov

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

5

Spectral efficiency and information rate

5.1Introduction

The capacity of a communication system in a given channel with noise is defined by Claude Shannon as the maximum number of bits per unit bandwidth that can be successfully transmitted (assuming an infinitesimally small error) over a communication link [165]. In a practical communication setup, the electrical signal-to-noise ratio (SNR) requirement for a target bit-error ratio (BER) performance in additive white Gaussian noise (AWGN), the corresponding spectral efficiency, and the information rate are figures of merit for a given modulation scheme. In this book, the spectral efficiency of the modulation scheme is referred to as the uncoded bit rate per unit bandwidth, while the information ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required