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首页> 外文期刊>IEEE Communications Magazine >Digital IF filter technology for 3G systems: an introduction
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Digital IF filter technology for 3G systems: an introduction

机译：用于3G系统的数字IF滤波器技术：简介

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Contemporary digital communication systems such as those being developed for the deployment of third-generation cellular require ever increasing performance levels in their signal processing chains to extract higher data rates and to provide decreasing price/performance ratios. Additionally, communication systems like 3G that must support multimode flexibility, such as the software radio, must be able to reconfigure their signal processing chains while keeping circuit complexity to a minimum. Given these constraints, DSP is the only viable alternative for baseband processing and digital IF processing. DSP is in many cases the only viable alternative to analog IF processing. Digital IF affords greater flexibility and higher performance in terms of attenuation and selectivity. It also offers better time and environment stability and lower equipment production costs than traditional analog techniques.
机译：当代数字通信系统（例如为部署第三代蜂窝而开发的数字通信系统）要求在其信号处理链中不断提高性能水平，以提取更高的数据速率并提供降低的性价比。此外，像3G这样的通信系统必须支持多模灵活性，例如软件无线电，必须能够重新配置其信号处理链，同时将电路复杂度降至最低。考虑到这些限制，DSP是基带处理和数字IF处理的唯一可行选择。在许多情况下，DSP是模拟IF处理的唯一可行选择。数字中频在衰减和选择性方面提供了更大的灵活性和更高的性能。与传统的模拟技术相比，它还具有更好的时间和环境稳定性，并降低了设备生产成本。

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