IEICE TRANSACTIONS on Communications
Performance Comparison of CDX- and TDX-Based Packet Scheduling Schemes in DS/CDMA Downlink
Summary :
In this paper, we investigate two packet scheduling schemes over the downlink of DS/CDMA systems to support packet data service. These schemes are the code division multiplexing (CDX)-based packet scheduling and the time division multiplexing (TDX)-based packet scheduling. To evaluate each scheme more effectively, we derive the throughput gain of the downlink as a performance measure based on the power constraint equation. In addition, the packet transmission delay of each scheme is derived and compared each other when the packet lengths of the concurrent data users are independently and identically distributed according to the exponential distribution. As the downlink capacity is quite related to the orthogonality factor, our analysis shows from the results that the throughput gain and the transmission delay are highly dependent on this factor. Furthermore, it is shown that the TDX scheduling scheme in CDMA downlink affords better performances than the CDX scheduling scheme, except when the orthogonality factor is around 1.
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- IEICE TRANSACTIONS on Communications Vol.E85-B No.10 pp.1914-1920
- Publication Date
- 2002/10/01
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- Type of Manuscript
- Special Section PAPER (Special Issue on Mobile Multimedia Communications)
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Seokjoo SHIN, Jee Hwan AHN, Kiseon KIM, "Performance Comparison of CDX- and TDX-Based Packet Scheduling Schemes in DS/CDMA Downlink" in IEICE TRANSACTIONS on Communications,
vol. E85-B, no. 10, pp. 1914-1920, October 2002, doi: .
Abstract: In this paper, we investigate two packet scheduling schemes over the downlink of DS/CDMA systems to support packet data service. These schemes are the code division multiplexing (CDX)-based packet scheduling and the time division multiplexing (TDX)-based packet scheduling. To evaluate each scheme more effectively, we derive the throughput gain of the downlink as a performance measure based on the power constraint equation. In addition, the packet transmission delay of each scheme is derived and compared each other when the packet lengths of the concurrent data users are independently and identically distributed according to the exponential distribution. As the downlink capacity is quite related to the orthogonality factor, our analysis shows from the results that the throughput gain and the transmission delay are highly dependent on this factor. Furthermore, it is shown that the TDX scheduling scheme in CDMA downlink affords better performances than the CDX scheduling scheme, except when the orthogonality factor is around 1.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e85-b_10_1914/_p
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@ARTICLE{e85-b_10_1914,
author={Seokjoo SHIN, Jee Hwan AHN, Kiseon KIM, },
journal={IEICE TRANSACTIONS on Communications},
title={Performance Comparison of CDX- and TDX-Based Packet Scheduling Schemes in DS/CDMA Downlink},
year={2002},
volume={E85-B},
number={10},
pages={1914-1920},
abstract={In this paper, we investigate two packet scheduling schemes over the downlink of DS/CDMA systems to support packet data service. These schemes are the code division multiplexing (CDX)-based packet scheduling and the time division multiplexing (TDX)-based packet scheduling. To evaluate each scheme more effectively, we derive the throughput gain of the downlink as a performance measure based on the power constraint equation. In addition, the packet transmission delay of each scheme is derived and compared each other when the packet lengths of the concurrent data users are independently and identically distributed according to the exponential distribution. As the downlink capacity is quite related to the orthogonality factor, our analysis shows from the results that the throughput gain and the transmission delay are highly dependent on this factor. Furthermore, it is shown that the TDX scheduling scheme in CDMA downlink affords better performances than the CDX scheduling scheme, except when the orthogonality factor is around 1.},
keywords={},
doi={},
ISSN={},
month={October},}
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TY - JOUR
TI - Performance Comparison of CDX- and TDX-Based Packet Scheduling Schemes in DS/CDMA Downlink
T2 - IEICE TRANSACTIONS on Communications
SP - 1914
EP - 1920
AU - Seokjoo SHIN
AU - Jee Hwan AHN
AU - Kiseon KIM
PY - 2002
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E85-B
IS - 10
JA - IEICE TRANSACTIONS on Communications
Y1 - October 2002
AB - In this paper, we investigate two packet scheduling schemes over the downlink of DS/CDMA systems to support packet data service. These schemes are the code division multiplexing (CDX)-based packet scheduling and the time division multiplexing (TDX)-based packet scheduling. To evaluate each scheme more effectively, we derive the throughput gain of the downlink as a performance measure based on the power constraint equation. In addition, the packet transmission delay of each scheme is derived and compared each other when the packet lengths of the concurrent data users are independently and identically distributed according to the exponential distribution. As the downlink capacity is quite related to the orthogonality factor, our analysis shows from the results that the throughput gain and the transmission delay are highly dependent on this factor. Furthermore, it is shown that the TDX scheduling scheme in CDMA downlink affords better performances than the CDX scheduling scheme, except when the orthogonality factor is around 1.
ER -
English
