Low-complexity PAR reduction schemes using SLM and PTS approaches for OFDM-CDMA signals

The paper investigates a peak-to-average power ratio (PAR) reduction scheme employing a simple symbol transform in OFDM-CDMA systems. This approach is very simple because of no additional complexity and works without restriction on the allocation of spreading code, maintaining the original transmiss...

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Bibliographic Details
Published in:IEEE transactions on consumer electronics 2003-05, Vol.49 (2), p.284-289
Main Authors: You, Young-Hwan, Jeon, Won-Gi, Paik, Jong-Ho, Jung, Hyeok-Koo
Format: Article
Language:English
Subjects:
Allocations
Casting
Digital video broadcasting
Electronics
Gain
Local area networks
Multiaccess communication
Noise levels
OFDM
Orthogonal Frequency Division Multiplexing
Partial transmit sequences
Peak to average power ratio
Reduction
Signal mapping
Simulation
Spreading
Transforms
Wireless LAN
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Summary:The paper investigates a peak-to-average power ratio (PAR) reduction scheme employing a simple symbol transform in OFDM-CDMA systems. This approach is very simple because of no additional complexity and works without restriction on the allocation of spreading code, maintaining the original transmission efficiency. Simulation results show that the investigated scheme gives a PAR reduction gain of 2-3 dB compared to the original OFDM and OFDM-CDMA signals, and can provide further PAR reduction by combining the selective mapping (SLM) and partial transmit sequence (PTS) schemes, which are less complex compared to the ordinary SLM and PTS approaches.
ISSN:0098-3063
1558-4127
DOI:10.1109/TCE.2003.1209515