[1] Wang Junbo, Chen Ming, Wang Jiangzhou, et al. Adaptive resource allocationin downlink multi-user MC-CDMA systems [J]. Journal of Southeast University (English Edition), 2008, 24 (4): 402-406. [doi:10.3969/j.issn.1003-7985.2008.04.002]

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Adaptive resource allocationin downlink multi-user MC-CDMA systems()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

24

Issue:

2008 4

Page:

402-406

Research Field:

Information and Communication Engineering

Publishing date:

2008-12-30

Info

Title:

Adaptive resource allocationin downlink multi-user MC-CDMA systems

Author(s):

Wang Junbo¹;  2;  Chen Ming¹;  Wang Jiangzhou¹

¹National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
²College of Information Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Keywords:

code division multiple access(CDMA);  multi-carrier transmission;  multi-user;  channel allocation;  power allocation

PACS:

TN929.5

DOI:

10.3969/j.issn.1003-7985.2008.04.002

Abstract:

The joint channel and power allocation in the downlink transmission of multi-user multi-carrier code division multiple access(MC-CDMA)systems are investigated and the throughput maximization problem is considered as a mixed integer optimization problem.For simplicity of analysis, the problem is divided into two less complex sub-problems:power allocation and channel allocation, which can be solved by a suboptimal adaptive power allocation(APA)algorithm and an optimal adaptive channel allocation(ACA)algorithm, respectively.By combining APA and ACA algorithms, an adaptive channel and power allocation scheme is proposed.The numerical results show that the proposed APA algorithm is more suitable for MC-CDMA systems than the conventional equal power allocation algorithm, and that the proposed channel and power allocation scheme can significantly improve the system throughput performance.

References:

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Memo

Memo:

Biographies: Wang Junbo(1979—), male, graduate;Chen Ming(corresponding author), male, doctor, professor, chenming@seu.edu.cn.
Foundation items: Major Project of the National Natural Science Foundation of China(No.60496311), the National High Technology Research and Development Program of China(863 Program)(No.2007AA01Z207), the Program for New Century Excellent Talents in University.
Citation: Wang Junbo, Chen Ming, Wang Jiangzhou.Adaptive resource allocation in downlink multi-user MC-CDMA systems[J].Journal of Southeast University(English Edition), 2008, 24(4):402-406.

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