Book contents
- Frontmatter
- Contents
- Authorship by Chapter
- Foreword
- Preface
- Part I Introduction to 802.11
- Part II 802.11 Quality of Service
- Part III 802.11 Security
- Part IV High Throughput 802.11
- Chapter 8 The 802.11n Standard
- Chapter 9 MIMO Spatial Processing for 802.11n WLAN
- Part V 802.11 Mesh Networks
- Part VI 802.11/Cellular Interworking
- Part VII Coexistence
- Part VIII 802.11 Network and Radio Resource Management
- Part IX 802.11 Range
- Part X 802.11 Hardware Design
- Part XI Wi-Fi Hotspots
- Part XII Wi-Fi Applications
- Part XIII Ultra WideBand (UWB)
- Part XIV Public Wireless Broadband
- Epilogue
- Index
Chapter 8 - The 802.11n Standard
from Part IV - High Throughput 802.11
Published online by Cambridge University Press: 10 December 2009
- Frontmatter
- Contents
- Authorship by Chapter
- Foreword
- Preface
- Part I Introduction to 802.11
- Part II 802.11 Quality of Service
- Part III 802.11 Security
- Part IV High Throughput 802.11
- Chapter 8 The 802.11n Standard
- Chapter 9 MIMO Spatial Processing for 802.11n WLAN
- Part V 802.11 Mesh Networks
- Part VI 802.11/Cellular Interworking
- Part VII Coexistence
- Part VIII 802.11 Network and Radio Resource Management
- Part IX 802.11 Range
- Part X 802.11 Hardware Design
- Part XI Wi-Fi Hotspots
- Part XII Wi-Fi Applications
- Part XIII Ultra WideBand (UWB)
- Part XIV Public Wireless Broadband
- Epilogue
- Index
Summary
The IEEE 802.11n standard is the first wireless LAN standard based on MIMO-OFDM, a technique that significant range and rate relative to conventional wireless LAN. This chapter describes the main features of the 802.11n standard including packet structures, preamble formats, and coding aspects. Performance results show that net user throughputs over 100 Mbps are achievable, which is about four times larger than the maximum achievable throughput using IEEE 802.11a/g. For the same throughput, MIMO-OFDM achieves a range that is about 3 times larger than non-MIMO systems.
Introduction
The appetite for higher data rate continues as consumer demand for bandwidth hungry applications like gaming, streaming audio and video grows. Advancement in handset processors and further integration of technologies like higher mega-pixel cameras into handsets, create a never ending need for more bandwidth consuming applications at longer ranges and more efficient utilization of the limited spectrum available to Network Operators. 3G technology falls short in meeting this demand, while coverage is often worse than what customers are used to from 2.5G networks.
On the other hand, wireless LAN, the technology initially expected to provide only limited range and bandwidth has come a long way. Since the introduction of proprietary WLAN products in 1990 and the adoption of the first IEEE 802.11 standard in 1997, maximum data rates have made an impressive growth that is depicted in Figure 8.1.
- Type
- Chapter
- Information
- Emerging Technologies in Wireless LANsTheory, Design, and Deployment, pp. 179 - 192Publisher: Cambridge University PressPrint publication year: 2007