Title :
PAPR reduction of band-limited CDM signals by adding unused codes
Author :
Okino, Kenta ; Akaiwa, Yoshihiko
Author_Institution :
Yokohama R&D Center, Kyocera Corp., Fukuoka, Japan
Abstract :
In this paper, an iterative method to reduce the peak to average power ratio (PAPR) of code-division multiplexed signals is proposed. The peak limitation is done by subtracting, from the original bandlimited CDM signal a peak reducing signal which is composed of weighted linear combination of unused bandlimited channelization codes. Thus no degradation of signal orthogonality nor extra signal spreading due to peak limitation occurs. The effectiveness of the proposed method is confirmed by computer simulation experiments.
Keywords :
4G mobile communication; bandlimited signals; channel coding; code division multiple access; code division multiplexing; iterative decoding; spread spectrum communication; DS-CDMA; PAPR reduction; bandlimited CDM signals; code-division multiplexed signals; direct sequence code division multiple access; iterative method; next generation mobile radio; peak reducing signal; peak to average power ratio; unused bandlimited channelization codes; weighted linear combination; Code division multiplexing; Computer simulation; Information science; Iterative methods; Multiaccess communication; Peak to average power ratio; Power amplifiers; Pulse shaping methods; Research and development; Shape;
Conference_Titel :
Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th
Print_ISBN :
0-7803-8521-7
DOI :
10.1109/VETECF.2004.1400228
