2003 · 14 citations · 4 references
EngineeringComputer ScienceElectrical EngineeringComputer NetworksDigital CommunicationWireless CommunicationsCommunication NetworksNetwork Performance AnalysisPropagation DelaySpread Spectrum CommunicationWireless Channel ModelingWireless Communication ProtocolsCarrier Sense Multiple AccessCollision Avoidance ProtocolsNetwork Propagation DelayPoisson ArrivalsRandom Access ProtocolsSpectrum Access ProtocolsSpectrum Sharing ProtocolsTransmission Delay
The application of CSMA (carrier-sense multiaccess) in a spread-spectrum packet radio network using a receiver-based code unique to each terminal is proposed and studied. The technique is realized by two protocols, namely, the R-base/CSMA and the R-base/CSMA-BT (Busy Tone) code, which are presented and analyzed, assuming a single-hop network, asynchronous transmission, Poisson arrivals, and exponentially distributed packet lengths. The authors also consider the delay capture properties of speed-spectrum waveforms. The network is modeled as a continuous-time two component-state Markov chain. The R-base/CSMA-BT code protocol has also been examined under zero propagation delay since it becomes collision-free in this case. Throughput versus the traffic rate characteristics have been obtained for both protocols with several number of users and at different propagation delays.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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