Title :
A study on time domain spreading for OFCDM
Author :
MATSUMOTO, Atsushi ; Miyoshi, Kenichi ; Uesugi, Mitsuru ; Kato, Osamu
Author_Institution :
Matsuthita Commun. Kanazawa R&D Labs. Co. Ltd., Ishikawa, Japan
Abstract :
The paper presents computer simulation results on spreading in both the time and frequency domain for OFDM-CDMA. The results show that the most suitable layout on which spreading chips are mapped is different for some conditions (e.g. number of multiplexing codes, propagation condition, etc). For example, in the case of employing a number of multiplexing codes, spreading only in the time domain outperforms other layouts. On the other hand, in case of half multiplexing codes, spreading in both the time and frequency domain outperforms the others.
Keywords :
OFDM modulation; cellular radio; code division multiple access; code division multiplexing; spread spectrum communication; time-domain analysis; CDMA; OFDM; frequency domain; multiplexing codes; next generation cellular systems; propagation condition; time domain spreading; Computer simulation; Fading; Frequency domain analysis; Interference constraints; Laboratories; Modulation coding; Multiaccess communication; OFDM modulation; Research and development; Telecommunication traffic;
Conference_Titel :
Wireless Personal Multimedia Communications, 2002. The 5th International Symposium on
Print_ISBN :
0-7803-7442-8
DOI :
10.1109/WPMC.2002.1088270
