Signal to interference performance for a TDMA portable radio link

The authors present measurement and simulation results of signal-to-interference ratio performance for a time-division multiple-access (TDMA) portable radio link The radio link transmits short TDMA bursts of only 82 symbols at 450 kb/s using 4-QAM (quadrature amplitude modulation). Demodulation is performed by a low-overhead digital coherent demodulator with two-branch selection diversity. The measured performance of the link is compared with the simulation results using word error ratio as a criterion. The results are also compared with signal-to-noise performance. To simulate the effect of portable movement, the measurements have been performed for several different fading rates. Desired and interfering TDMA burst signals were subjected to independent Rayleigh fading on two diversity branches.<<ETX>>

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