상세정보
학술지
Radio Resource Management in Multiple-Chip-Rate DS/CDMA Systems Supporting Multiclass Services
- 저자
- 김영우, 김덕경, 김정호, 신성문, 성단근
- 발행일
- 200205
- 출처
- IEEE Transactions on Vehicular Technology, v.50 no.3, pp.723-736
- ISSN
- 0018-9545
- 출판사
- IEEE
- 협약과제
- 02MR2200, 초고속패킷 무선전송기술연구, 한기철
- 초록
- This paper is concerned with radio resource management in multiple-chip-rate (MCR) DS/CDMA systems accommodating multiclass services with different information rates and quality requirements. Considering both power spectral density (PSD) over a radio frequency (RF) and the effect of RF input filtering on the receiver in MCR-DS/CDMA systems, criteria for call admission are presented and system performance is derived. System performance in MCR-DS/CDMA systems is strongly affected by radio resource management. A minimum total-power-increment-based resource management scheme for an efficient resource management scheme is proposed herein. The performance of this scheme is compared with that of a random-based resource management scheme in terms of new call blocking probability, handoff call dropping probability, and normalized throughput. In addition, in order to reduce handoff call dropping rate, reallocating subsystems assigned for communicating calls is proposed. The minimum total-power-increment-based resource management scheme yields better performance than the random-based resource management scheme for multiclass services.
- KSP 제안 키워드
- Blocking probability(BP), CDMA systems, Call admission, Call dropping probability, Dropping rate, Handoff call, Multiclass services, New call blocking probability, Normalized Throughput, Quality requirements, System performance