DocumentCode :
695745
Title :
Power balancing in FBMC-MISO systems
Author :
Caus, Marius ; Perez-Neira, Ana I.
Author_Institution :
Dept. of Signal Theor. & Commun., Univ. Politec. de Catalunya (UPC), Barcelona, Spain
fYear :
2011
fDate :
Aug. 29 2011-Sept. 2 2011
Firstpage :
1608
Lastpage :
1612
Abstract :
This paper addresses the fairness in power allocation optimization for FBMC-MISO systems. Given a power budget we have proposed a sub-optimal strategy to distribute the power among the subcarriers. Firstly, with the aim of mitigating the interference terms as much as possible two precoding techniques have been proposed: WMF and Tx-MDIR. As a benchmark we have considered a transmit filter that is designed according to the ZF criterion. Then, assuming that the noise power dominates over the interferences we have allocated the power according to the solution provided by the max-min SINR problem which balances the SINRs. When the channel can be assumed flat in the subcarrier pass band region both ZF and Tx-MDIR can take advantage of the power control to achieve a BER equal to 10-4 by saving 3dB in the transmitted power with respect to the uniform power allocation strategy. Simulation-based results have shown that for very frequency selective channels the BER plot of ZF exhibits an error floor. In this scenario, Tx-MDIR and WMF are able to boost the BER in the Eb/N0 range [15dB-30dB] and [24dB-30dB], respectively.
Keywords :
channel bank filters; error statistics; minimax techniques; precoding; radio transmitters; radiofrequency interference; telecommunication power management; wireless channels; BER; FBMC-MISO systems; Tx-MDIR precoding technique; WMF precoding technique; ZF criterion; filter bank based multicarrier systems; interference mitigation; max-min SINR problem; noise power; power allocation optimization; power balancing; power budget; power control; subcarrier pass band region; suboptimal power distribution strategy; transmit filter; uniform power allocation strategy; very frequency selective channels; Bit error rate; Interference; OFDM; Prototypes; Resource management; Signal to noise ratio;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signal Processing Conference, 2011 19th European
Conference_Location :
Barcelona
ISSN :
2076-1465
Type :
conf
Filename :
7074295
Link To Document :
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