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Closed form solution for QoS: constrained information--theoretic sum capacity of reverse link CDMA systems

Published: 02 October 2006 Publication History

Abstract

The information-theoretic maximum system capacity in a CDMA network, which guarantees fairness to mobile stations,can be achieved by optimally allocating transmit powers to the mobile stations while imposing individual QoS constraints. Even though this optimization is carried out in a multi-dimensional space we show that the optimal solution can be reduced to a search in a one-dimensional space. In this paper we first show that the previous results can be obtained by a simpler and more intuitive approach. Also, we show that the optimal solution is actually bang--bang. In addition, we show that the candidate solutions can be determined in a closed form. This considerably reduces the computational effort. Because rather than carrying out numerical search on a set of intervals, only a few explicitly determined points should now be examined

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S. Kandukuri and S. Boyd. Simultaneous rate and power control in multirate multimedia cdma systems. In IEEE Sixth International Symposium on Spread Spectrum Techniques and Applications pages 570--574, NJIT, NJ, 2000.
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S.-J. Oh, A.D. Damnjanovic, and A.C.K. Soong. Information theoretic sum capacity of reverse link cdma systems. In Proceedings of The 57th IEEE Semiannual Vehicular Technology Conference (VTC 2003-Spring) pages 93--97, 2003.
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S.-J. Oh and A.C.K. Soong. Qos-constrained information-theoretic sum capacity of reverse link cdma systems. IEEE Transactions on Wireless Communications 5 (1):3--7, 2006.
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Cited By

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  • (2020)Evaluation of SAC-OCDMA System Performance in Terms of BER and Q-Factor Using FBGs and M-Sequence CodeProceedings of the 16th ACM Symposium on QoS and Security for Wireless and Mobile Networks10.1145/3416013.3426444(1-5)Online publication date: 16-Nov-2020
  • (2009)Approximation algorithms for maximizing the information – theoretic sum capacity of reverse link CDMA systemsAEU - International Journal of Electronics and Communications10.1016/j.aeue.2007.11.00263:2(108-115)Online publication date: Feb-2009
  • (2007)Capacity-Share Controlled Information-Theoretic Sum Capacity of Reverse Link Single-Cell CDMA Systems2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring10.1109/VETECS.2007.536(2605-2609)Online publication date: Apr-2007
  • Show More Cited By

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  1. Closed form solution for QoS: constrained information--theoretic sum capacity of reverse link CDMA systems

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      cover image ACM Conferences
      Q2SWinet '06: Proceedings of the 2nd ACM international workshop on Quality of service & security for wireless and mobile networks
      October 2006
      146 pages
      ISBN:1595934863
      DOI:10.1145/1163673
      Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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      Published: 02 October 2006

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      Author Tags

      1. optimization
      2. quality of service
      3. reverse link CDMA

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      View all
      • (2020)Evaluation of SAC-OCDMA System Performance in Terms of BER and Q-Factor Using FBGs and M-Sequence CodeProceedings of the 16th ACM Symposium on QoS and Security for Wireless and Mobile Networks10.1145/3416013.3426444(1-5)Online publication date: 16-Nov-2020
      • (2009)Approximation algorithms for maximizing the information – theoretic sum capacity of reverse link CDMA systemsAEU - International Journal of Electronics and Communications10.1016/j.aeue.2007.11.00263:2(108-115)Online publication date: Feb-2009
      • (2007)Capacity-Share Controlled Information-Theoretic Sum Capacity of Reverse Link Single-Cell CDMA Systems2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring10.1109/VETECS.2007.536(2605-2609)Online publication date: Apr-2007
      • (2007)A More Realistic Approach to Information-Theoretic Sum Capacity of Reverse Link CDMA Systems in a Single Cell2007 IEEE International Conference on Communications10.1109/ICC.2007.59(314-319)Online publication date: Jun-2007

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