Radio Resource Assignment for Multimedia Services in Multiple Chip Rate Ds/Cdma Systems
نویسنده
چکیده
This paper is concerned with radio resource allocation in multiple-chip-rate (MCR) DS/CDMA systems accommodating multimedia services with di erent information rates and quality requirements. Considering power spectral density (PSD) over a radio frequency (RF) band and the effect of RF input ltering on the receiver in MCR-DS/CDMA systems, we present criteria for capacity estimation and clarify the characteristics of subsystems. The system performance in MCR-DS/CDMA systems is strongly a ected by radio resource assignment. A minimum power-incrementbased resource assignment scheme and a random-based resource assignment scheme are proposed. The performance of both schemes are compared in terms of blocking probability and normalized throughput. The minimum power-incrementbased resource assignment scheme yields a better performance than the random-based resource assignment scheme for multimedia services.
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