A new ZCT precoded OFDM system with pulse shaping: PAPR analysis

Imran Baig*, Varun Jeoti

*Awdur cyfatebol y gwaith hwn

Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion CynhadleddCyfraniad mewn cynhadleddadolygiad gan gymheiriaid

16 Dyfyniadau (Scopus)

Crynodeb

This paper studies the Peak to Average Power Ratio (PAPR) improvements in various precoding based Orthogonal Frequency Division Multiplexing (OFDM) systems. In particular, the Zadoff-Chu matrix Transform (ZCT) precoder based PAPR reduction technique is analyzed. The ZCTs are obtained from Zadoff-Chu (ZC) sequences by filling ZCT kernel row-wise or alternatively column wise. Row wise filling gives rise to Constant Envelope OFDM (CE-OFDM) system with 0 dB PAPR, while column wise filling give rise 7.8 dB, at clip rate of 10-3 with system subcarriers N = 64 for QPSK modulation. However, since even CE-OFDM systems are required to operate with pulse shaping that helps in keeping out-of-band radiation low and meeting the transmission spectrum mask requirement, the PAPRs are no longer 0 dB. Therefore, in this paper, we present PAPR analysis of various precoding based OFDM systems with the popular Root Raised Cosine (RRC) pulse shaping. Simulation results show that, the ZCT Row-wise precoder based OFDM (ZCT-R-OFDM) system has lower PAPR than the ZCT Column-wise precoder based OFDM (ZCT-C-OFDM) system, the Hadamard Transform precoder based OFDM (WHT-OFDM) systems and the conventional OFDM systems.

Iaith wreiddiolSaesneg
TeitlProceedings of the 2010 Asia Pacific Conference on Circuit and System, APCCAS 2010
Tudalennau1131-1134
Nifer y tudalennau4
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - 9 Rhag 2010
Cyhoeddwyd yn allanolIe
Digwyddiad2010 Asia Pacific Conference on Circuit and System, APCCAS 2010 - Kuala Lumpur, Malaisia
Hyd: 6 Rhag 20109 Rhag 2010

Cyfres gyhoeddiadau

EnwIEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS

Cynhadledd

Cynhadledd2010 Asia Pacific Conference on Circuit and System, APCCAS 2010
Gwlad/TiriogaethMalaisia
DinasKuala Lumpur
Cyfnod6/12/109/12/10

Dyfynnu hyn