|
For Full-Text PDF, please login, if you are a member of IEICE,
or go to Pay Per View on menu list, if you are a nonmember of IEICE.
|
An Efficient Transmission Slot Selection Scheme for MC-CDMA Systems with Packet Loss and Delay Bound Constraints
Ji-Bum KIM Kyung-Ho SOHN Chung-Ha KOH Young-Yong KIM
Publication
IEICE TRANSACTIONS on Communications
Vol.E88-B
No.9
pp.3779-3783 Publication Date: 2005/09/01 Online ISSN:
DOI: 10.1093/ietcom/e88-b.9.3779 Print ISSN: 0916-8516 Type of Manuscript: LETTER Category: Network Keyword: MC-CDMA, scheduling algorithm, wireless QoS, multimedia,
Full Text: PDF(570.8KB)>>
Summary:
In this letter, we propose an efficient transmission slot selection scheme for Band Division Multi-Carrier-CDMA (BD-MC-CDMA) systems under the constraints of packet loss and delay bound for each individual session. By utilizing channel dynamics together with the delay deadline and loss history, one can determine whether to transmit or not during each time slot, based on the prediction of future channel variations. To validate the efficiency of the proposed algorithm, we model each sub-band as a discrete time Markov Chain using a finite state Markov channel (FSMC) and derive the criteria required for transmission decision. Simulation results show that our proposed scheme can satisfy quality of service (QoS) requirements for real-time traffic with minimum use of resources, while increasing throughput of non-real-time traffic with the resources saved from real-time traffic.
|
|
|