Outdoor mobile broadband access with 802.11

被引：24

作者：

Alexander, Paul ^{[1
]}

Haley, David ^{[1
]}

Grant, Alex ^{[1
]}

机构：

[1] Univ S Australia, Adelaide, SA 5001, Australia

来源：

IEEE COMMUNICATIONS MAGAZINE | 2007年 / 45卷 / 11期

关键词：

D O I：

10.1109/MCOM.2007.4378329

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The IEEE 802.11 OFDM physical layer was designed primarily for indoor local area networks. Commercially available 802.11 radios suffer greatly reduced performance, even failing completely, when deployed outdoors, where long delay spreads cause self-interference, and vehicular mobility causes fast variations in the radio channel parameters. This article describes an advanced OFDM receiver that overcomes these problems. It works by combining all useful received energy, accounting for inter-symbol interference, and accurately tracking radio channel variations. Complexity and performance advantages are gained by splitting the processing between the time and frequency domains. Computer simulations show that even for outdoor urban environments at speeds greater than 140 mph, this receiver delivers performance comparable to a non-mobile, indoor system.

引用

页码：108 / 114

页数：7

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