Wired networks within a building have limited flexibility, and consequently, Wireless Networking is becoming more popular.

However, don't imagine you can buy product from a catalog, install it, and have a trouble free existence.

Wireless Networking within a building is achieved using one of two main types of wireless LAN

  • Solutions using Frequency Hopping Spread Spectrum radio's. IEEE 802.11
  • Solutions using Direct Sequence Spread Spectrum radio's. IEEE 802.11b



Data rate - through the air

Up to 3Mbps

Up to 11Mbps

Net data throughput

Up to 2.4Mbps

Up to 5.5Mbps

Number of co-located cells / systems

Maximum 26 in any one hopping set. There are 3 sets of 26

Maximum 3. Channels 1,7 & 13

Ideal for indoor applications



Ideal for outdoor applications



FHSS is lower data rate than DSSS systems but can be installed into virtually any location without fear of interference interrupting it's operation.

DSSS delivers higher bandwidth than FHSS systems but cannot always be installed - due to all three available channels being used in the area. If you are sharing a building where other people are also using DSSS, you may encounter problems.

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