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The European Telecommunications Standards Institute (ETSI) is currently defining a European standard for HIgh PERformance Radio LANs (HIPERLAN). To operate as wired LAN replacements, these systems will need to offer data rates as high as 20 Mb/s. To counteract the time dispersive nature of the indoor radio channel, adaptive equalisation is proposed at the receiver.

The transmission of high speed data to and from a mobile terminal is far from simple. This paper presents practical results for one solution to the problem, namely referencebased channel sounding. A 9600bps 16-QAM data system is employed together with the Transparent Tone-In-Band (TTIB) reference processing technique.Excellent performance under both static and fading conditions is observed.

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