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扩频无线电技术的商业用途正在得到很大的关注。扩频通信正在无线局域网(LANs),个人通信网(PCNs),无线用户交换机(PBXs)等方面得以应用。不过,使扩频技术适合于这些更普遍应用的许多因素,也同样可用于网间互连区域来接通物理上分离的本地网。本文将探讨扩频通信技术用于专用广域网(WAN),作为一种价格上有竞争力和技术上可靠的应用。 什么是扩频? 扩频无线电技术是由美国军方开发研制的,用于克服敌方制造的人为干扰。“扩频”这个术语,用来表征发送信号的宽频谱形状。
The commercial use of spread spectrum radio technologies is receiving a great deal of attention. Spread spectrum communications are being used in areas such as Wireless LANs, Personal Communications Networks (PCNs), and Wireless Private Branch Exchanges (PBXs). However, many of the factors that make spread-spectrum techniques suitable for these more common applications are equally applicable to inter-network interconnection zones to connect physically separated local networks. This article will explore spread spectrum communication technology for a private wide area network (WAN) as a competitively priced and technically reliable application. What is Spread Spectrum? Spread-spectrum radio technology was developed by the U.S. military to overcome human-made interference from the enemy. The term “spread spectrum” is used to characterize the broad spectrum of transmitted signals.