High RF signal attenuation over long cable runs; difficult to upgrade or reconfigure structurally. Active and Hybrid DAS
Another major addition: femtocells, picocells, and metro cells. How small cells complement DAS and where to use them. High RF signal attenuation over long cable runs;
The book opens by answering a fundamental question: Why is in‑building coverage important? The answer is both commercial and technical. Mobile network operators have long realised that most data traffic and voice calls are made indoors – in offices, shopping malls, airports, hotels, hospitals, and underground car parks. Modern data‑hungry applications (such as streaming video, cloud services, and real‑time gaming) demand high throughput and low latency, which cannot be guaranteed by outdoor macro cells alone. High RF signal attenuation over long cable runs;