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

Author

You, Young-Hwan ; Jeon, Won-Gi ; Paik, Jong-Ho ; Jung, Hyeok-Koo

Author_Institution

Dept. of Internet Eng., Sejong Univ., Seoul, South Korea

Volume

49

Issue

2

fYear

2003

fDate

5/1/2003 12:00:00 AM

Firstpage

284

Lastpage

289

Abstract

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.

Keywords

OFDM modulation; code division multiple access; computational complexity; spread spectrum communication; OFDM-CDMA; PAR reduction; partial transmit sequence; peak-to-average power ratio reduction; selective mapping; spreading code; symbol transform; Casting; Digital video broadcasting; Gain; Local area networks; Multiaccess communication; OFDM; Partial transmit sequences; Peak to average power ratio; Signal mapping; Wireless LAN;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/TCE.2003.1209515

Filename

1209515