DocumentCode :
329689
Title :
Performance analysis of a channel load sensing protocol for CDMA packet radio networks with finite populations and variable length messages
Author :
Judge, Garth ; Takawira, Fambirai
Author_Institution :
Dept. of Electron. Eng., Natal Univ., Durban, South Africa
Volume :
1
fYear :
1998
fDate :
2-4 Sep 1998
Firstpage :
282
Abstract :
An analytical and simulation performance evaluation is presented for a proposed multi-access protocol for data traffic in a packet radio network. The network employs direct-sequence code division multiple access (DS-CDMA) in a centralised channel load-sensing scheme with channel overload (collision) detection and blocking. A finite population, packetisation of variable length messages and partial message retransmission scheme are considered in the protocol. For a given maximum bit error rate due to mutual multi-access interference (MAI), an upper threshold (β) for the number of users allowed in the channel can be determined. This paper proposes a second lower threshold, α, to improve the system performance by adding an access control mechanism. The results show that an improved throughput/delay performance can be obtained by implementing a centralised load sensing scheme and dynamic channel control mechanism
Keywords :
code division multiple access; data communication; delays; digital simulation; error statistics; multiuser channels; packet radio networks; radiofrequency interference; spread spectrum communication; telecommunication control; telecommunication traffic; BER; DS-CDMA; access control mechanism; centralised channel load-sensing; channel blocking; channel load sensing protocol; channel overload detection; collision detection; data traffic; direct-sequence code division multiple access; dynamic channel control; finite populations; lower threshold; maximum bit error rate; multi-access protocol; mutual multiaccess interference; packet radio networks; partial message retransmission; performance analysis; simulation; system performance; throughput/delay performance; upper threshold; variable length messages; Access protocols; Analytical models; Bit error rate; Interference; Multiaccess communication; Packet radio networks; Performance analysis; Road accidents; Telecommunication traffic; Traffic control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Spread Spectrum Techniques and Applications, 1998. Proceedings., 1998 IEEE 5th International Symposium on
Conference_Location :
Sun City
Print_ISBN :
0-7803-4281-X
Type :
conf
DOI :
10.1109/ISSSTA.1998.726243
Filename :
726243
Link To Document :
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