The architecture of software-defined radio has the hardware module that is high-performance and open-bus, in order to facilitate the continued upgrading and expansion.

软件无线电采用标准的、高性能的开放式总线结构，以利于硬件模块的不断升级和扩展。

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The club are to parade the Blue Square Premier trophy during an open top bus tour and a civic reception in the town on Saturday.

BBC: Burton success delights Brayford

Off-duty bus drivers are visiting depots in London in an open-top bus to demand extra pay for working during the Olympic Games.

BBC: Bus drivers on open-top protest bus

The open-top bus went through Lakeside, into the town centre, and then back to the Keepmoat.

BBC: Fans celebrate Doncaster Rovers Championship promotion