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algorithm ALOHA analysis antenna assumed ATM network available slots average bandwidth base station bit error probability bit error rate block buffer capacity CDMA cellular channel communication Computer considered convolutional code decoder delay denote distribution encoder estimate feedback Figure filter frame frequency function given handoff handover IEEE IEEE Trans implementation increase input interference ITU-T length maximum mobile modulation multipath multiple access multiplexing node noise operation optical optimal output paper parameters path performance phase PN sequence PRMA protocol QPSK queue radio random random variable ratio Rayleigh fading received reservation samples satellite scheme SDMA sequence shown in Fig signal simulation results slotted ALOHA spread spectrum switching synchronization syndrome TDMA technique Technology throughput tion traffic traffic shaping transmission transmitted trellis update users voice contention period voice terminals wavelength wireless