Title :
Performance Analysis for Decode-and-Forward Two-Way Relay Networks with Limited Feedback Beamforming
Author :
Jia Zhou ; Xiaoxiang Wang ; Mingming Li
Author_Institution :
Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
In this paper, we study the performance of fixed decode-and-forward (DF) two-way relay cooperative networks with multi-antenna sources employing limited feedback beamforming (LFBF) for signal transmission. The closed-form expressions for the overall outage probability and sum symbol error rate (SSER) are derived using the moment generation function (MGF) of the signal- to-noise-ratio (SNR) at the relay. Subject to total power constraint, we also explore an optimal power allocation scheme between sources and relay to minimize the system outage probability and symbol error rate. Simulations are given to verify the correctness of the theoretical derivations. Results show that the proposed LFBF scheme can achieve considerable tradeoff between performance and complexity.
Keywords :
array signal processing; cooperative communication; decode and forward communication; error statistics; multifrequency antennas; relay networks (telecommunication); telecommunication network reliability; LFBF scheme; MGF; SNR; SSER; closed-form expressions; decode and forward two-way relay networks; fixed DF two-way relay cooperative networks; limited feedback beamforming; moment generation function; multintenna sources; optimal power allocation scheme; overall outage probability minimization; performance analysis; signal transmission; signal-to-noise-ratio; sum symbol error rate; total power constraint; Array signal processing; Channel estimation; Error analysis; MIMO; Nickel; Relays; Resource management;
Conference_Titel :
Vehicular Technology Conference (VTC Spring), 2014 IEEE 79th
Conference_Location :
Seoul
DOI :
10.1109/VTCSpring.2014.7023043
