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Coexistence: The Theory and the Practice

机译：共存：理论与实践

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摘要

RF coexistence, the ability of one piece of equipment to tolerate signals from another piece of equipment, is an often debated topic. Organizations from standards bodies to manufacturers to operators debate how to determine the ability to share spectrum with different technologies (CDMA, WiMAX, LTE, etc.), different duplexing schemes (FDD and TDD), and different deployments (public safety and cellular operations). Most often theoretical models are used, as measurements are often not practical. This article has performed both a theoretical and a practical (measured) analysis of CDMA-LTE coexistence in the U.S. PCS band (1850–1915/1930–1995 MHz), the result of which indicates that calculations based on standards or regulatory specifications are only directionally correct and that measurements, whenever possible, can provide a better picture of coexistence. This article validates theoretical coexistence calculations using real-world measurements and provides the methodology under which more detailed coexistence analysis can be performed. The methodology presented can be used to determine the coexistence of various wireless technologies, the results of which are directly translatable to field performance and thus practical network design. This leads to a better understanding of the challenges and solutions when disparate technologies and different network architectures attempt to share the same spectrum band.
机译：射频共存（一种设备容忍另一种设备发出的信号的能力）是一个经常被争论的话题。从标准组织到制造商再到运营商的组织都在争论如何确定与不同技术（CDMA，WiMAX，LTE等），不同双工方案（FDD和TDD）以及不同部署（公共安全和蜂窝运营）共享频谱的能力。 。由于测量通常不切实际，因此通常使用理论模型。本文对美国PCS频段（1850–1915 / 1930–1995 MHz）中CDMA-LTE共存进行了理论和实践（实测）分析，其结果表明，仅基于标准或监管规范进行的计算方向正确，并且只要有可能，就可以提供更好的共存画面。本文验证了使用实际测量值进行的理论共存计算，并提供了可以执行更详细的共存分析的方法。所介绍的方法可用于确定各种无线技术的共存，其结果可直接转换为现场性能，从而进行实际的网络设计。当不同的技术和不同的网络体系结构试图共享同一频段时，这可以更好地理解挑战和解决方案。

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