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- W2149281036 abstract "We examine techniques for increasing spectral efficiency of cellular systems by using slow frequency hopping with dynamic frequency-hop pattern adaptation. The adaptation is driven by rapid frequency quality estimates. We present simulation studies that express system performance by calculating code word error cumulative distribution functions. The impact of path loss, shadowing, Rayleigh fading, co-channel interference, voice activity and occupancy is monitored. Simulations have been done for circuit-switched systems. The paper investigates: (a) full-replacement dynamic frequency hopping (DFH); (b) worst-dwell DFH; and (c) threshold-based DFH. The results show that full-replacement dynamic frequency hopping can support twice as many users as random frequency hopping. The two other techniques perform worse than the full-replacement technique, but better than random hopping." @default.
- W2149281036 created "2016-06-24" @default.
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- W2149281036 date "2003-01-20" @default.
- W2149281036 modified "2023-09-23" @default.
- W2149281036 title "Dynamic frequency hopping in wireless cellular systems-simulations of full-replacement and reduced-overhead methods" @default.
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- W2149281036 doi "https://doi.org/10.1109/vetec.1999.780481" @default.
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