Advances in Visual Data Compression and Communication

i

i

i

i

i

i

i

i

Chapter 17

Denoising in Communications

17.1 Introduction

In 2011, mobile video traffic exceeded 50% of mobile traffic for the first time, and

it is predicted to increase 25-fold in the next five years, according to Cisco Visual

Networking Index (VNI) [3]. Wireless video communications are facing a dilemma

in achieving efficiency and robustness. On the one hand, videos in their raw format

are huge in size, and they need to be efficiently compressed for transmission. On the

other hand, compressed video sequences have too little redundancy left, and therefore

are susceptible to channel errors.

Direct application of Shannon’s separation theorem [4] suggests that source re-

dundancy should be completely removed and channel coding is responsible for

adding ...