Performance analysis of a hybrid CDMA/ISMA protocol for indoor wireless computer communications

A combination of direct sequence code division multiple access (DS-CDMA) and p-persistent inhibit sense multiple access (ISMA) protocols is proposed for indoor wireless communications (IWC). The combination of these two protocols is called the hybrid CDMA/ISMA protocol. The performance of the hybrid CDMA/ISMA protocol is analyzed with a Markov model considering differential phase shift keying (DPSK) modulation. The performance is measured in terms of throughput and delay. The performance is also evaluated using computer simulation of which the results are in close agreement with the Markov model results. The study of indoor wireless communications using a hybrid CDMA/ISMA protocol can be useful for various applications in research and design offices, medical data communication in hospitals, etc.<
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