๐๐ก๐๐ญ ๐ข๐ฌ ๐๐๐๐ ? & ๐๐จ๐ฐ ๐ข๐ญ ๐๐๐ง ๐๐ ๐๐๐๐ฌ๐ฎ๐ซ๐๐? OSNR Margin (Optical Signal-to-Noise Ratio Margin) is a critical parameter in optical communication systems that measures the difference between the actual OSNR and the minimum OSNR required for error free signal detection (typically defined by a bit error rate threshold). It provides insight into how much "headroom" or tolerance a system has before it fails to maintain acceptable performance. ๐๐จ๐ฐ ๐ข๐ญ ๐๐๐ง ๐๐ ๐๐๐๐ฌ๐ฎ๐ซ๐๐=> OSNR Margin=Actual OSNRโRequired OSNR ๐ฐ๐๐๐๐๐๐๐๐๐: Indicates the system's robustness against impairments like noise, dispersion, and nonlinear effects. Higher OSNR Margin means the system is more resilient to degradation over time or due to network changes. ๐ญ๐๐๐๐๐๐ ๐จ๐๐๐๐๐๐๐๐ ๐ถ๐บ๐ต๐น ๐ด๐๐๐๐๐=> Fiber length and quality: Longer distances or low-quality fibers increase attenuation and amplify noise. Amplifiers: (EDFAs) and Raman amplifi...
Baseband Unit (BBU) Subsystems and Functions Baseband Unit (BBU) Subsystems and Functions โก Today, let's dive into the working principle of the Baseband Unit (BBU) in modern base stations and explore its key subsystems and functions. ๐ก The BBU is a crucial component that enables efficient operation and management of a base station. Here's a breakdown of its subsystems and their functions: v Baseband Subsystem: Handles baseband signal processing, including uplink and downlink data processing, signaling processing, resource management, and operation and maintenance tasks. v Power and Mechanical Subsystem: Provides essential power supply and cooling to ensure reliable functioning of the BBU, comprising the backplane, fan module, and power module. v Transmission Subsystem: Facilitates seamless communication and data transmission between the BBU and...