NDLI: A PAPR Reduction Method using Constraint Code in Multicode CDMA System

Content Provider	IEEE Xplore Digital Library
Author	Heung-Gyoon Ryu Sang-Kyun Kim Seung-Eun Lee Cheng-Xiang Wang
Copyright Year	2007
Description	Author affiliation: Chungbuk Nat. Univ., Chungbuk (Heung-Gyoon Ryu; Sang-Kyun Kim; Seung-Eun Lee)
Abstract	Multicode - Code Division Multiple Access (MC-CDMA) system is very good for the several kinds of service rates with various quality of service requirement because it can affordable by assigning multiple codes and controlling the flexible capacity. However, the so many multi-code signals are summed in the time domain so that it suffers from the serious problem of high peak to average power ratio (PAPR). Therefore, the expensive linear amplifier or large input back-off is necessary to overcome the problem but it makes power consumption of high power amplifier (HPA) very poor. In this paper, we propose a new method that can reduce PAPR efficiently by constraint codes based on the opposite correlation property of the incoming information data. PAPR reduction performance depends on the length and indices of constraint codes in the MC-CDMA system. There is a trade-off between PAPR reduction and the length of constraint codes. We also study the BER improvement in AWGN channel. The simulation results show that BER performance can be very close to the linear amplifier in two cases: 1) when the exact constraint codes are used without input back-off and 2) when a few constraint codes are used with small input back-off.
Starting Page	296
Ending Page	299
File Size	187841
Page Count	4
File Format	PDF
ISBN	9781424411894
DOI	10.1109/PACRIM.2007.4313233
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-08-22
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Peak to average power ratio Multiaccess communication Multicarrier code division multiple access OFDM Quality of service High power amplifiers Bit error rate AWGN channels Transmitters Control systems correlation Multi-code CDMA PAPR HPA
Content Type	Text
Resource Type	Article

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