Performance evaluation of a JCDMA/NC-PRMA protocol with load balancing assignment scheme
- Resource Type
- Conference
- Authors
- Jenn-Kaie Lain; Yu-Wen Lai
- Source
- VTC2000-Spring. 2000 IEEE 51st Vehicular Technology Conference Proceedings (Cat. No.00CH37026) Vehicular technology Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st. 3:2198-2202 vol.3 2000
- Subject
- Transportation
Load management
Access protocols
Multiaccess communication
Multiple access interference
Time division multiple access
Bit error rate
Base stations
Centralized control
Permission
Multimedia systems
- Language
- ISSN
- 1090-3038
A joint code division multiple access and noncollision packet reservation multiple access (JCDMA/NC-PRMA) protocol is proposed and investigated as an uplink access scheme for the third-generation mobile systems. Being the underlying TDMA architecture of the CDMA transmissions, NC-PRMA enables the base station to have a centralized control over the slot allocation policy. In order to reduce the multiple access interference (MAI) variation in CDMA transmission, load balancing (LB) slot assignment policy is proposed and evaluated. Simulation results show that considerable improvement can be achieved over the joint code division multiple access and packet reservation multiple access (JCDMA/PRMA) protocol, in which the multiple access interference variation is reduced by way of a dynamic permission probability for contending terminals.