Two-way training: optimal power allocation for pilot and data transmission

  • Authors:

  • Xiangyun Zhou;Tharaka A. Lamahewa;Parastoo Sadeghi;Salman Durrani

  • Affiliations:

  • School of Engineering, College of Engineering and Computer Science, The Australian National University, Canberra, ACT, Australia and Research School of Information Sciences and Engineering at the ...;School of Engineering, College of Engineering and Computer Science, The Australian National University, Canberra, ACT, Australia and Research School of Information Sciences and Engineering at the ...;School of Engineering, College of Engineering and Computer Science, The Australian National University, Canberra, ACT, Australia and Research School of Information Sciences and Engineering at the ...;School of Engineering, College of Engineering and Computer Science, The Australian National University, Canberra, ACT, Australia

  • Venue:
  • IEEE Transactions on Wireless Communications
  • Year:
  • 2010

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Abstract

In this letter, we consider multiple-input single-output (MISO) systems with two-way training based transmission. We focus on the long-term system performance and study the optimal power allocation between reverse training, forward training and data transmission. We derive closed-form solutions for the optimal power allocation using high signal-to-noise ratio (SNR) approximations, and show that they achieve near optimal performance in terms of symbol error rate (SER) for different modulation schemes over a wide range of SNR values.