Title :
Practical subchannel power controlled OFDM system under time-varying multipath channel
Author :
Kang, Hongku ; Hwang, Wooncheol ; Kim, Kiseon ; Choi, Yeongyoon
Author_Institution :
Dept. of Inf. & Commun., K-JIST, Gwangju, South Korea
Abstract :
We evaluate the BER performance of the subchannel power controlled OFDM system considering more practical cases including the limitation in word length in subchannel power control tap-weights and the time-varying multipath channel. According to simulation results, the total required number of bits is 5 for the optimal subchannel power control and the main source of the performance degradation of the subchannel power controlled OFDM system is the time-varying multipath channel.
Keywords :
OFDM modulation; error statistics; multipath channels; power control; telecommunication control; time-varying channels; BER performance; OFDM system; multipath channel; subchannel power control; tap-weights; time-varying channel; word length; Bit error rate; Communication system control; Control system synthesis; Control systems; Degradation; Fading; Multipath channels; OFDM; Power control; Time varying systems;
Conference_Titel :
Wireless Personal Multimedia Communications, 2002. The 5th International Symposium on
Print_ISBN :
0-7803-7442-8
DOI :
10.1109/WPMC.2002.1088331
