Acta Metallurgica Sinica(English letters) ›› 2011, Vol. 18 ›› Issue (5): 47-52.doi: 10.1016/S1005-8885(10)60102-1

• Wireless • Previous Articles     Next Articles

Performance of two-way amplify-and-forward relaying with adaptive modulation over Nakagami-m fading channels

  

  1. School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2011-04-07 Revised:2011-06-02 Online:2011-10-31 Published:2011-10-13
  • Contact: ZHANG Yong-liang E-mail: royzhang006@yahoo.com.cn

Abstract:

This paper investigates the performance of a two-way amplify-and-forward (AF) relay system with adaptive modulation over independent and non-identical Nakagami-m fading channels. The tight closed-form cumulative distribution function (CDF) expression of the instantaneous end-to-end signal-to-noise ratio (SNR) is provided. Further, approximate closed-form expression for the average spectral efficiency of the two-way AF system with adaptive modulation is obtained. Then, a tight lower bound of outage probability is derived. Finally, we use numerical simulations to verify the tightness of our analytical results.

Key words:

two-way relaying, adaptive modulation, spectral efficiency, outage probability