Title :
Performance of Selection Combining Amplify-and-Forward Relaying with Adaptive Modulation over Nakagami-m Fading Channels
Author :
Zhang, Yongliang ; Chang, Yongyu ; Wang, Sen ; Yang, Dacheng
Author_Institution :
Wireless Theor. & Technol. Lab., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
This paper investigates the performance of selection combining (SC) amplify-and-forward (AF) relaying with adaptive modulation to maximize the spectral efficiency. We derive the closed-form expressions of the average spectral efficiency and the outage probability of the proposed scheme over independent and non-identical Nakagami-m fading channels. The analysis results are verified by using Monte Carlo simulations. Our results indicate that the proposed scheme not only has simplified receiver architecture, but also can offer similarly high spectral efficiency as the MSE-AM scheme proposed in [1], when the relay link is stronger enough than the direct link.
Keywords :
Monte Carlo methods; Nakagami channels; adaptive modulation; amplify and forward communication; diversity reception; probability; radio links; radio receivers; relays; spectral analysis; MSE-AM scheme; Monte Carlo simulation; adaptive modulation; closed-form expression; nonidentical Nakagami-m fading channel; outage probability; receiver architecture; relay link; selection combining amplify-and-forward relaying; spectral efficiency; Adaptive systems; Bit error rate; Fading; Modulation; Relays; Signal to noise ratio; Wireless communication;
Conference_Titel :
Vehicular Technology Conference (VTC Fall), 2011 IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4244-8328-0
DOI :
10.1109/VETECF.2011.6093012
