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Use of code sensing technique in the receiver-based spreading code protocol and its performance analysis

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3 Author(s)
Chen, X.H. ; Dept. of Electr. Eng., Oulu Univ., Finland ; Lu, W.X. ; Oksman, J.

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.<>

Published in:

Communications, Speech and Vision, IEE Proceedings I  (Volume:139 ,  Issue: 1 )