RFBroadband LAN vs. Baseband LAN: Key Differences Explained
Advertisement
This page describes the difference between Broadband LAN and Baseband LAN.
Baseband LAN
In a Baseband LAN, digital data is transmitted directly over the medium. No modulation is applied to the data. Baseband LAN systems are relatively simple, but only one signal can be transmitted at a time.
Distance is limited due to attenuation and distortion of the baseband information. Typically, this type of LAN covers about 1 mile with twisted pair cabling and up to 5 miles with coaxial cable.
Broadband LAN
In a Broadband LAN, digital data signals are translated into a higher frequency band before being transmitted over the medium. This involves applying a modulation technique to the baseband data.
Frequency Division Multiplexing (FDM) is used to multiplex multiple channels for the binary data signals in broadband LAN systems. Broadband systems typically use coaxial cables due to their larger bandwidth, which can be around 300-450 MHz.
Broadband LANs can cover distances of approximately 10 miles. However, these systems are more complex and expensive and often require modems at various points, depending on the specific needs and application.
Key Differences Summarized
| Feature | Baseband LAN | Broadband LAN |
|---|---|---|
| Data Transmission | Direct, unmodulated | Modulated to higher frequencies |
| Complexity | Simple | Complex |
| Cost | Lower | Higher |
| Medium | Twisted Pair, Coaxial Cable | Coaxial Cable |
| Distance | Limited (1-5 miles) | Greater (around 10 miles) |
| Multiplexing | None | FDM (Frequency Division Multiplexing) |
| Simultaneous Signals | One at a time | Multiple channels simultaneously |
