Title :
Pilot Power Allocation of OFDM-Based AF Relay System
Author :
Li, Bo ; Lin, Dengsheng ; Li, Shaoqian
Author_Institution :
Nat. Key Lab. of Sci. & Technol. on Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
In this paper, we study the pilot power allocation in the amplify-and-forward (AF) relay system based on orthogonal frequency division multiplexing (OFDM) modulation. By giving the closed-form expression of the outage probability, we theoretically derive the optimized pilot power allocation. Then we verify our results through simulation. At last, the numerical results match the analytical results well and show that the optimized pilot power allocation brings considerable improvement on BER performance.
Keywords :
OFDM modulation; amplify and forward communication; error statistics; probability; AF relay system; BER performance; OFDM; amplify-and-forward relay system; closed-form expression; orthogonal frequency division multiplexing; outage probability; pilot power allocation; Bit error rate; Channel estimation; Interpolation; OFDM; Relays; Resource management; Signal to noise ratio;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing (WiCOM), 2011 7th International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6250-6
DOI :
10.1109/wicom.2011.6036678
