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Adaptive Power Control for A-CDMA Systems Over K-Distributed Fading Channels

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Abstract

Energy adaptation for Asynchronous CDMA (A-CDMA) systems over Rayleigh and Rician fading distributions with and without diversity combining techniques has been discussed in literature. In this work, adaptive power control for A-CDMA systems over channels undergoing K-distribution is discussed in detail. K-distribution is a valid model to represent the envelope statistics of the backscattered echo, and is used to simulate the effects of a dense urban environment with the average received power level fluctuating slowly due to shadowing effects. Performance measures, such as probability density and cumulative distribution functions of (a) probability of error and (b) signal energy-to-noise ratio and, system parameters, such as fading margin, mean transmitter energy gain, and percentage points are computed for K-distribution channels as a function of probability of error specification and the probability of unsatisfactory operation.

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References

  1. Sklar, B. (2001). Digital communications: Fundamentals and applications (2nd ed.). Upper Saddle River, NJ: Prentice Hall Inc.

    MATH  Google Scholar 

  2. Duman, T. M., & Ghrayeb, A. (2007). Coding for MIMO communication systems. Chichester: Wiley.

    Book  MATH  Google Scholar 

  3. Rappaport, T. S. (1996). Wireless communications: Principles and practice (2nd ed.). Upper Saddle River, NJ: Prentice Hall Inc.

    MATH  Google Scholar 

  4. Garg, V. K., Smolik, K., & Wilkes, J. E. (1997). Applications of CDMA in wireless personal communications. Upper Saddle River, NJ: Prentice Hall Inc.

    Google Scholar 

  5. Mosa, A., & Abu, R. (2007). Introduction to CDMA wireless communications (1st ed.). Los Angeles, CA: Elsevier.

    Google Scholar 

  6. Bhaskar, V., & Joiner, L. (2005). Variable energy adaptation for asynchronous CDMA communications over slowly fading channels. Elsevier Journal of Computers and Electrical Engineering, 31(1), 33–55.

    Article  MathSciNet  MATH  Google Scholar 

  7. Khangura, S. K., Kaur, K., & Uppal, R. S. (2010). Power control algorithms in wireless communications. International Journal of Computer Applications, 1(12), 82–87.

    Article  Google Scholar 

  8. Flemming, H., & Meno Finn, I. (1977). Mobile fading-Rayleigh and lognormal superimposed. IEEE Transactions on Vehicular Technology, 26(4), 332–335.

    Article  Google Scholar 

  9. Kang, M., Yang, L., & Alouini, M. S. (2006). Outage probability of MIMO optimum combining in presence of unbalanced co-channel interferers and noise. IEEE Transactions on Wireless Communications, 5(7), 1661–1668.

    Article  Google Scholar 

  10. Abdi, A. (1998). K distribution: An appropriate substitute for Rayleigh-lognormal distribution in fading-shadowing wireless channels. Electronic Letters, 34(9), 851–852.

    Article  Google Scholar 

  11. Bithas, P. S., Sagias, N. C., Mathiopoulos, P. T., Karagiannidis, G. K., & Rontogiannis, A. A. (2006). On the performance analysis of digital communications over generalized-K fading channels. IEEE Communication Letters, 10(5), 353–355.

    Article  Google Scholar 

  12. Modest, M. F., Levin, D. A., & Bansal, A. (2009). Correlated-K distribution method for atomic radiation in hypersonic non-equilibrium flows. 47th American Institute of Aeronautics (AIAA) Aerospace Sciences Meeting and Exhibit (pp. 5–8). Orlando, FL.

  13. Bohge, M., Wolisz, A., Furuskar, A., & Lundevall, M. (2008). Multiuser OFDM system performance subject to control channel reliability in a multi-cell environment. IEEE International Conference on Communications (pp. 3647–3652). Beijing.

  14. Shankar, P. M. (2004). Error-rates in generalized shadowed fading channels. Wireless Personal Communications, 28(3), 233–238.

    Article  Google Scholar 

  15. Papoulis, A., & Pillai, S. U. (2002). Probability, random variables and stochastic processes (4th ed.). NewYork, NY: Tata McGraw-Hill Inc.

    Google Scholar 

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Authors and Affiliations

  1. Department of Electrical and Computer Engineering, San Francisco State University, 1600 Holloway Avenue, San Francisco, CA, 94132, USA

    Vidhyacharan Bhaskar

  2. Department of Electrical Engineering, Northwestern Polytechnic University, 47671 Westinghouse Drive, Fremont, CA, 94539, USA

    Vidhyacharan Bhaskar

  3. Department of Electronics and Communication Engineering, SRM University, Kattankulathur, Kancheepuram Dt., Tamilnadu, 603203, India

    E. Gouthami Reddy

Authors
  1. Vidhyacharan Bhaskar
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  2. E. Gouthami Reddy
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Correspondence to Vidhyacharan Bhaskar.

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Bhaskar, V., Gouthami Reddy, E. Adaptive Power Control for A-CDMA Systems Over K-Distributed Fading Channels. Wireless Pers Commun 90, 1843–1857 (2016). https://doi.org/10.1007/s11277-016-3426-2

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  • DOI: https://doi.org/10.1007/s11277-016-3426-2

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