Introduction

Summary

In this chapter we have described the motivation for employing interference avoidance - significant improvements in system capacity and the hope that IA can be an organizing principle for unlicensed band systems in general and in a variety of settings. We described the basic ideas from which interference avoidance springs - whitening filters and linear multiuser detection and have described some of the simple basic metrics we will use to measure performance. We continue in chapter 2 with a careful description of different interference avoidance algorithms and their relationship to square correlation and sum capacity metrics, and in chapter 3 we finish our discussion of interference avoidance on simple channels with the study of algorithm convergence and optimality.