Use of code sensing technique in the receiver-based spreading code protocol and its performance analysis
X.H. Chen, Wencheng Lu, Juhani Oksman · IEE Proceedings I Communications Speech and Vision · 1992
Packet conflicts in an asynchronous distributed CDMA packet radio network is a main cause of throughput inefficiency and network instability. To reduce the packet conflicts due to random packet initiations in the network an alternative collision-avoiding CDMA protocol, the receiver-based (R) spreading code sensing protocol, is proposed and its performance is numerically analysed. The results reveal that, by using the code-sensing technique in the conventional receiver-based spreading code protocol, the throughput-delay performance and the stability of the network can be dramatically improved. The results are also compared with those of other CDMA spreading code protocols without code sensing. A two-dimensional time-continuous Markov chain model for the R code sensing protocol is developed to evaluate its steady-state performance.