A joint power control and interference avoidance code assignment strategy for downlink MC-DS-CDMA with 2D spreading

Chih Wen Chang, Chian Cheng Kuo

研究成果: Conference contribution

1 引文 (Scopus)

摘要

Maintaining the quality-of-service (QoS) requirement while eliminating interference is an important but difficult task in the downlink MC-DS-CDMA with two-dimensional (2D) spreading. To achieve this goal, we integrate the power control (FC) mechanism and the interference avoidance code assignment strategy. This joint policy is to firstly eliminate interference via the interference avoidance (IA) code assignment strategy and then maintain the QoS via power control. To facilitate the code assignment strategy, by performance analysis, we define a new PC-based multiple access interference (MAI) coefficient. Thanks to the help of the MAI coefficient, we can evaluate each candidate code by quantitatively predicting the possible interference it may produce. With this interference pre-evaluation, the extra MAI m the system can be avoided. Subsequently, the power control mechanism can maintain the QoS using less power to further eliminate MAI. The simulation results show that the proposed joint scheme can maintain a predefined signal quality and achieve a high code admission rate while reducing the power consumption to 68% in the considered case.

原文English
主出版物標題2008 IEEE 67th Vehicular Technology Conference-Spring, VTC
發行者Institute of Electrical and Electronics Engineers Inc.
頁面2316-2320
頁數5
ISBN(列印)9781424416455
DOIs
出版狀態Published - 2008 一月 1
事件2008 IEEE 67th Vehicular Technology Conference-Spring, VTC - Marina Bay, Singapore
持續時間: 2008 五月 112008 五月 14

出版系列

名字IEEE Vehicular Technology Conference
ISSN(列印)1550-2252

Other

Other2008 IEEE 67th Vehicular Technology Conference-Spring, VTC
國家Singapore
城市Marina Bay
期間08-05-1108-05-14

指紋

DS-CDMA
Multiple access interference
Power Control
Power control
Code division multiple access
Multiple Access Interference
Assignment
Interference
Quality of service
Quality of Service
Eliminate
Electric power utilization
Coefficient
Power Consumption
Performance Analysis
Strategy
Integrate
Evaluate
Requirements
Evaluation

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

引用此文

Chang, C. W., & Kuo, C. C. (2008). A joint power control and interference avoidance code assignment strategy for downlink MC-DS-CDMA with 2D spreading. 於 2008 IEEE 67th Vehicular Technology Conference-Spring, VTC (頁 2316-2320). [4526070] (IEEE Vehicular Technology Conference). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/VETECS.2008.514
Chang, Chih Wen ; Kuo, Chian Cheng. / A joint power control and interference avoidance code assignment strategy for downlink MC-DS-CDMA with 2D spreading. 2008 IEEE 67th Vehicular Technology Conference-Spring, VTC. Institute of Electrical and Electronics Engineers Inc., 2008. 頁 2316-2320 (IEEE Vehicular Technology Conference).
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Chang, CW & Kuo, CC 2008, A joint power control and interference avoidance code assignment strategy for downlink MC-DS-CDMA with 2D spreading. 於 2008 IEEE 67th Vehicular Technology Conference-Spring, VTC., 4526070, IEEE Vehicular Technology Conference, Institute of Electrical and Electronics Engineers Inc., 頁 2316-2320, 2008 IEEE 67th Vehicular Technology Conference-Spring, VTC, Marina Bay, Singapore, 08-05-11. https://doi.org/10.1109/VETECS.2008.514

A joint power control and interference avoidance code assignment strategy for downlink MC-DS-CDMA with 2D spreading. / Chang, Chih Wen; Kuo, Chian Cheng.

2008 IEEE 67th Vehicular Technology Conference-Spring, VTC. Institute of Electrical and Electronics Engineers Inc., 2008. p. 2316-2320 4526070 (IEEE Vehicular Technology Conference).

研究成果: Conference contribution

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N2 - Maintaining the quality-of-service (QoS) requirement while eliminating interference is an important but difficult task in the downlink MC-DS-CDMA with two-dimensional (2D) spreading. To achieve this goal, we integrate the power control (FC) mechanism and the interference avoidance code assignment strategy. This joint policy is to firstly eliminate interference via the interference avoidance (IA) code assignment strategy and then maintain the QoS via power control. To facilitate the code assignment strategy, by performance analysis, we define a new PC-based multiple access interference (MAI) coefficient. Thanks to the help of the MAI coefficient, we can evaluate each candidate code by quantitatively predicting the possible interference it may produce. With this interference pre-evaluation, the extra MAI m the system can be avoided. Subsequently, the power control mechanism can maintain the QoS using less power to further eliminate MAI. The simulation results show that the proposed joint scheme can maintain a predefined signal quality and achieve a high code admission rate while reducing the power consumption to 68% in the considered case.

AB - Maintaining the quality-of-service (QoS) requirement while eliminating interference is an important but difficult task in the downlink MC-DS-CDMA with two-dimensional (2D) spreading. To achieve this goal, we integrate the power control (FC) mechanism and the interference avoidance code assignment strategy. This joint policy is to firstly eliminate interference via the interference avoidance (IA) code assignment strategy and then maintain the QoS via power control. To facilitate the code assignment strategy, by performance analysis, we define a new PC-based multiple access interference (MAI) coefficient. Thanks to the help of the MAI coefficient, we can evaluate each candidate code by quantitatively predicting the possible interference it may produce. With this interference pre-evaluation, the extra MAI m the system can be avoided. Subsequently, the power control mechanism can maintain the QoS using less power to further eliminate MAI. The simulation results show that the proposed joint scheme can maintain a predefined signal quality and achieve a high code admission rate while reducing the power consumption to 68% in the considered case.

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Chang CW, Kuo CC. A joint power control and interference avoidance code assignment strategy for downlink MC-DS-CDMA with 2D spreading. 於 2008 IEEE 67th Vehicular Technology Conference-Spring, VTC. Institute of Electrical and Electronics Engineers Inc. 2008. p. 2316-2320. 4526070. (IEEE Vehicular Technology Conference). https://doi.org/10.1109/VETECS.2008.514