Title :
Study of instantaneous variation of OFDM sub-carrier spectrum towards symbol-by-symbol quality control
Author :
Itokawa, K. ; Kita, N. ; Sato, A. ; Uwano, S. ; Mori, D. ; Saito, S.
Author_Institution :
NTT Access Network Service Syst. Labs., Kanagawa, Japan
Abstract :
A new method for measuring the instantaneous broadband frequency-domain characteristics using an OFDM technique was introduced and its effectiveness was verified based on indoor measurements. Dynamic variations of the spectrum for selected conditions pertaining to the room size were studied by both ray trace simulation and measurement at 5.2 GHz. The results showed that area size dependencies on dynamic variation of the spectrum were not remarkable. The instantaneous variation of the frequency characteristics over the range of 20 MHz enabled the analysis of the dynamic variations in a frequency spectrum and an evaluation of the multipath characteristics that is more detailed than before.
Keywords :
OFDM modulation; indoor radio; microwave propagation; multipath channels; radio access networks; ray tracing; 5.2 GHz; OFDM subcarrier spectrum; area size dependencies; dynamic variation; high-speed wireless access systems; indoor measurements; instantaneous broadband frequency-domain characteristics; multipath characteristics; ray trace simulation; symbol-by-symbol quality control; Frequency conversion; Frequency division multiplexing; Frequency measurement; Large Hadron Collider; Magnetooptic recording; OFDM; Quality control; Reflection; Shape measurement; Timing;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2003. IEEE
Conference_Location :
Columbus, OH, USA
Print_ISBN :
0-7803-7846-6
DOI :
10.1109/APS.2003.1219366
