Deliverable 3

Deliverable D2.3

Deliverable D2.3

Report on advanced component techniques for DVB-NGH

13^th November 2012

Editor: Tero Jokela

University of Turku, Finland

Executive Summary

In ENGINES work package two (WP2), individual system architecture components were studied, and the results from these studies have been forwarded to standardization work (DVB-T2 Lite, DVB-NGH). The outcome of WP2 work is summarized in five deliverables. Deliverable 2.1 focuses on system architectural work performed by ENGINES partners. Deliverable 2.2 deals with DVB-NGH receiver implementation related issues. Devised advanced component techniques for DVB-NGH are presented in deliverable 2.3. Additionally there is work on overall architectures, especially issues not covered by direct standardization that are novel access technologies (deliverable 2.4) and end-to-end system integration (deliverable 2.5).

The advanced component techniques that have been devised or refined in order to solve fundamental issues for reaching required capacity and performance for DVB-NGH are presented in this deliverable. The work on advanced component techniques performed by ENGINES partners for the DVB-NGH is collected here. The topics considered are:

• 
  Forward Error Correction (FEC) coding techniques and constellations for NGH
  
• 
  Time interleaving
  
• 
  Advanced modulation techniques for NGH
  
• 
  Interference mitigation and PAPR reduction techniques
  
• 
  Time Frequency Slicing (TFS)
  
• 
  MIMO Techniques
  
• 
  Relaying for broadcast networks
  

The advanced techniques related to hybrid networks and cognitive radio are presented in Deliverable 2.4.

Table of Contents

1Introduction 6

2Forward Error Correction (FEC) coding techniques and constellations for NGH 6

2.1The Bit Interleaved Coded Modulation Module for DVB-NGH: enhanced features for mobile reception 7

2.2A double-binary 16-state turbo code for NGH 17

2.3L1 signalling robustness improvement techniques 25

2.4BaseBand inter Frame FEC (BB-iFEC) 37

2.5Rotated PSK and APSK for the satellite component of NGH 47

3Time interleaving 51

3.1Time interleaving proposal for NGH 51

3.2Performance analysis of time interleavers in Land Mobile Satellite conditions 59

4Study of advanced modulation techniques for NGH 59

4.1Terrestrial link: OFDM-OQAM modulation 59

4.2Satellite link: SC-OFDM modulation 90

5Study of interference mitigation and PAPR reduction techniques 91

5.1System considerations 91

5.2Joint PAPR and channel estimation 93

6Time Frequency Slicing (TFS) 114

6.1Introduction 114

6.2TFS Concept 120

7MIMO Techniques 128

7.1Candidates of Space-Time (ST) Codes for DVB-NGH 129

7.2Performance Comparisons among the Candidates 146

7.3Advanced Modulation and MIMO Schemes 157

7.4High Diversity Multi-Block Space-Time Code 164

7.5Distributed MIMO techniques for the future broadcasting systems 173

8Relaying studies for broadcast networks 184

8.1Coverage Extension through Cooperative Relaying 184

8.2Distributed Coding for OFDM-Based Transmission in Cooperative Broadcast Networks 189

8.3A New Decode-Rotate-and-Forward Strategy for Cooperative Relay Networks 192

8.4Conclusions 195

9Summary 196

10References 197

List of Contributors

The following ENGINES members, listed in alphabetical order, have contributed to this deliverable:

• 
  BBC
  
• 
  CNES
  
• 
  DiBcom
  
• 
  Hispasat
  
• 
  INSA-IETR
  
• 
  MERCE
  
• 
  Nokia
  
• 
  Orange Labs/France Telecom
  
• 
  Teamcast
  
• 
  Telecom Bretagne
  
• 
  Teracom
  
• 
  Thomson Broadcast
  
• 
  Universidad Politécnica de Valencia/ iTEAM
  
• 
  University of Turku
  

1Introduction

This deliverable is dedicated to the presenting studies related to advanced component techniques that have been devised or refined in order to solve fundamental issues for reaching required capacity and performance for DVB-NGH.

First, in chapter 2, studies on Forward Error Correction (FEC) coding techniques and constellations for data and signalling are presented. Both LDPC and turbo codes are investigated together with Base Band interframe FEC (BB-iFEC) mechanism. Regarding modulation constellations, the application of rotated constellations is studied.

Chapter 3 presents the contributions of the project on optimisation of channel interleaving. The interleaving mechanism and scheduling are considered.

So-called OFDM-OQAM modulation that is particularly efficient against frequency distortions such as Doppler Effect is studied in chapter 4. In OFDM/OQAM no cyclic prefix is inserted between the symbols but a specific pulse-shaping (prototype function) is introduced.

Chapter 5 presents two contributions related to PAPR reduction techniques. Comparison between several Peak to Average Ratio (PAPR) reduction techniques for DVB-NGH, especially Tone Reservation and Active Constellation Extension is reported. Further, a study on the optimization of the phase and amplitude of the channel estimation pilots, used jointly for PAPR reduction process is performed.

Analysis of Time-Frequency Slicing (TFS) adopted for DVB-NGH is presented in chapter 6. TFS mechanism is presented and its feasibility and requirements are considered.

Chapter 7 presents the outcomes of the multiple antenna technique studies performed within the project. Space Time (Frequency) codes presented for the DVB-NGH are presented together with performance studies. Further, distributed MIMO schemes are considered.

In chapter 8 a study on relaying on broadcasting networks is presented. Cooperative communications in wireless networks have recently been introduced as a new method to increase the throughput, the reliability and the robustness of wireless systems.