CB：恒定带宽

“恒定带宽”在技术文档和日常交流中常被缩写为“CB”，以方便快速书写与使用。这一表述在美国航空航天局（NASA）等专业机构领域尤为常见，用于指代那些带宽数值保持稳定、不随条件变化的通信或数据传输场景。

For fast and accurate design and production of lumped constant bandwidth frequency-hopping ( FH ) narrowband filter, a load structure changing with frequency is introduced.
为了快速准确地设计并制作恒带宽窄带集总跳频滤波器，提出了一种随频率变化而变化的负载结构。
New scheme of 21 channel constant bandwidth frequency divided multiplex telemetry systems
21路等带宽频分制遥测系统的新方案
Such as writing business needs constant bandwidth resources and some businesses have high latency requirements.
例如有些业务需要恒定的带宽资源，有些业务有很高的时延要求。
MIMO ( Multiple Input Multiple Output ) can produce parallel and independent channels in space and transmit multiple data streams. Spectrum efficiency can be improved dramatically under the constraint of constant bandwidth.
多输入多输出（MIMO）技术能够在空间中产生独立的并行信道同时传输多路数据流，在不增加系统带宽的情况下提高了频谱效率。
However, as the great increase of wireless bandwidth in broadband wireless communication systems, it is always needed to support burst data service and constant bandwidth voice simultaneously.
在现代宽带无线通信系统中，传输带宽大大提高，往往需要同时支持突发性强的数据业务和固定带宽的语音业务。

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