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从 WLAN 到 W-CDMA,所有无线设备有一点是共同的,即没有有线连接。通过空气传送的信号会因大气损耗而失真,会因自然的和人为的障碍而中断,也会因发射机和接收机的相对移动而进一步变化。这种过程称为衰落。衰落在现实环境中是不可避免的,因此无线通信系统必须能够在处理这个问题的同时,保持准确的数据传输能力。对实际信道的衰落损伤进行仿真对无线设备的测试非常关键。为精确地进行信道仿真,必须理解不同的衰落情形及其影响,并创建这些衰落效应的数学模型。安捷伦科技提供了一个新型解决方案,用来在无线设备测试过程中仿真衰落,缓和信道仿真中某些最困难的、成本高昂的挑战。
From WLAN to W-CDMA, all wireless devices are a bit common, ie there is no wired connection. Signals transmitted through the air are distorted by atmospheric depletion, interrupted by natural and man-made obstacles, and further altered by the relative movement of the transmitter and receiver. This process is called decay. Decay in the real environment is inevitable, so the wireless communication system must be able to deal with this problem, while maintaining accurate data transmission capabilities. Simulation of the actual channel fading impairments is critical to the testing of wireless devices. For accurate channel simulations, one must understand different fading scenarios and their effects and create mathematical models of these fading effects. Agilent Technologies offers a new solution for simulating fading in wireless device testing and mitigating some of the most difficult and costly challenges in channel emulation.