Authors:
Kazuki Chiba
and
Masanori Hamamura
Affiliation:
Graduate School of Engineering, Kochi University of Technology, Japan
Keyword(s):
CDMA, asynchronous, multipath, feedback, multitone, PAR.
Related
Ontology
Subjects/Areas/Topics:
Multi-Carrier and CDMA, OFDM, Spread-Spectrum and UWB
;
Telecommunications
;
Wireless and Mobile Technologies
;
Wireless Information Networks and Systems
Abstract:
We present the characteristics of peak-to-average power ratio (PAR) for multitone-hopping code-division multiple access (MH-CDMA) signals using feedback-controlled hopping patterns (FCHPs) (FCHP/MH-CDMA). In FCHP/MH-CDMA, since each chip of transmitted signals consists of plural tones, energy consumption due to large PAR may not be negligible at the transmitter. Therefore, it is important to investigate the PAR characteristics of
FCHP/MH-CDMA signals. It is shown that limiting the number of tones per chip, and the number of quantization bits, and clipping on FCHP are effective in reducing the PAR at almost identical bit-error rate (BER).