Suffers from high RF cable loss over long distances, making it unsuitable for massive skyscrapers or sprawling complexes. Active DAS
: Macrocells penetrating buildings from the outside, supplemented by basic passive Distributed Antenna Systems (DAS). 2. 3G Era (UMTS / HSPA) Suffers from high RF cable loss over long
Define target KPIs based on operator requirements (e.g., 95% area coverage at -95 dBm RSRP for LTE, specific uplink/downlink data throughput targets). 3G Era (UMTS / HSPA) Define target KPIs
Indoor DAS systems often use active components (amplifiers) that add noise. Too many amplifiers in cascade can increase the noise floor so much that the receiver can no longer hear the signal. Tolstrup explains noise figure, noise rise, and how to calculate the total noise for a system. He also covers the “cascade equation” and provides rules of thumb for keeping noise under control. Tolstrup explains noise figure, noise rise, and how
