波长重用的单跳星形WDM网络

Wavelength Reusable Multi channel Network

波分复用（ｗａｖｅｌｅｎｇｔｈｄｉｖｉｓｉｏｎｍｕｌｔｉｐｌｅｘｉｎｇ，ＷＤＭ）提供了充分利用光纤通信带宽的有效途径，但是ＷＤＭ中的独立波长数目十分有限，而普通的无源星形ＷＤＭ网络中每个时刻每个波长只能有一个用户发送信息，难以支持大量用户。为此，本文提出了一种新型的ＷＤＭ网络ＷＲＳＮ（ｗａｖｅｌｅｎｇｔｈｒｅｕｓａｂｌｅｓｔａｒｎｅｔｗｏｒｋ）。在ＷＲＳＮ中每个时刻每个波长可以同时有两个用户发送信息。分析和模拟结果表明ＷＲＳＮ网络吞吐量高，分组时延小。具有很高的实用价值。

Wavelength division multiplexing (WDM) provides an efficient way to exploit the enormous bandwidth that optical channels can provide. However, the wavelength number supported by a single fiber is very limited, such as 8,16 or 32. The normal star network is not suitable for large size, in which only one source destination pair is able to communication on a wavelength at a time. This paper investigates a new WDM network named WRSN(wavelength reusable star network) which supports two source destination pairs communication concurrently on each wavelength. The analysis and simulation results show that the WRSN achieves high throughput and low delay. Therefore, WRSN is of great practical value.