Peak power reduction in SCS-MC-CDM system

The paper proposes a method that reduces the peak power in an SCS-MC-CDM (sub-carrier selecting multi-carrier code division multiplex) system with time domain spreading. In the proposed method, the transmitter can reduce its peak power by optimizing each sub-carrier's phase. The method requires...

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Bibliographic Details
Main Authors: Izuka, N., Nagate, A., Masui, H., Fujii, T.
Format: Conference Proceeding
Language:English
Subjects:
Bandwidth
Code division multiplexing
Laboratories
Mobile communication
Multicarrier code division multiple access
OFDM
Optimization methods
Partial transmit sequences
Telecommunications
Transmitters
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Description
Summary:The paper proposes a method that reduces the peak power in an SCS-MC-CDM (sub-carrier selecting multi-carrier code division multiplex) system with time domain spreading. In the proposed method, the transmitter can reduce its peak power by optimizing each sub-carrier's phase. The method requires significantly fewer weighting factor multiplications to optimize the phase than the PTS (partial transmit sequences) method. The receiver requires no side information to regenerate the original signal. A computer simulation was carried out to estimate the proposed method's performance. The simulation results show that the proposed method reduces the number of weighting factor multiplications to 0.002% of that required in the PTS method when the proposed method yields almost the same peak power as the PTS method.
ISSN:1525-3511
1558-2612
DOI:10.1109/WCNC.2005.1424517