Title :
Power Loading for OFDM with Incomplete Channel State Information
Author :
Ermolova, N.Y. ; Makarevitch, B.
Author_Institution :
Helsinki Univ. of Technol., Espoo
Abstract :
The paper addresses the problem of BER-minimizing power loading strategies for OFDM-based transmission systems where the channel state information at the transmitter is available only in terms of the "strong" and "weak" sub-carriers. We propose an algorithm of unequal power distribution between the "strong" and "weak" halves of sub- carriers. The theoretical background and simulation results confirm efficiency of the proposed power loading technique based on incomplete channel state information.
Keywords :
OFDM modulation; error statistics; telecommunication channels; BER-minimizing power loading; OFDM-based transmission systems; channel state information; power distribution; power loading; Bit error rate; Bit rate; Channel state information; Data communication; Fading; Land mobile radio; Modulation; OFDM; Power system reliability; Radio transmitters;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2007. PIMRC 2007. IEEE 18th International Symposium on
Conference_Location :
Athens
Print_ISBN :
978-1-4244-1144-3
Electronic_ISBN :
978-1-4244-1144-3
DOI :
10.1109/PIMRC.2007.4394361
