Performance analysis of power control schemes in CDMA communication system
In CDMA cellular communication system power control is one of the most efficient methods to manage the resources, where the main capacity-limiting factor is co-channel interference. In this paper several closed loop power control algorithms are analyzed considering loop delay to cope with rando...
| Main Authors: | , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2011
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/21785/ http://irep.iium.edu.my/21785/ http://irep.iium.edu.my/21785/1/Performance_analysis_of_power_control_schemes_in_CDMA_communication_system.pdf |
| Summary: | In CDMA cellular communication system power
control is one of the most efficient methods to manage the
resources, where the main capacity-limiting factor is co-channel
interference. In this paper several closed loop power control
algorithms are analyzed considering loop delay to cope with
random changes of the radio channel and interference. Adaptive
algorithms are considered that utilize ideas from self-tuning
control systems. The inherent loop delay associated with closed
loop power control can be included in the design process. Another
problem in closed-loop power control is that extensive control
signaling consumes radio resources, and thus the control feedback
bandwidth must be limited. To enhance the performance of
closed-loop power control in limited-feedback-case is investigated.
The performances of the adaptive algorithms are investigated
through both analysis and computer simulations, and compared
with well-known algorithms from the literature. After proper
investigation and analysis it is anticipated that significant
performance improvements are achievable with the adaptive
algorithms. |
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