PTS using novel constellation extension scheme for PAPR reduction of OFDM signals without side information Online publication date: Thu, 21-Sep-2017
by Alok Joshi; Davinder S. Saini
International Journal of Information and Communication Technology (IJICT), Vol. 11, No. 3, 2017
Abstract: High peak to average power ratio (PAPR) is a major hindrance in the performance of orthogonal frequency division multiplex (OFDM) systems. When OFDM signal with high PAPR passed through high power amplifiers (HPA), it requires a large back-off to operate in linear region, this leads to large dynamic range of HPA, such HPA are costly and complex with poor efficiency. Partial transmit sequence (PTS) is one of the most promising techniques for PAPR reduction. The major drawback of this technique is it requires exhaustive searching of all possible and allowable phase factors to find the optimal phase factor with lowest PAPR. This information is to be sent to a receiver as side information (SI) for decoding purpose. Sending SI puts additional burden on the transmission bandwidth thus reducing bandwidth efficiency. In this paper, a novel constellation extension-based PTS is proposed which uses novel octagonal geometry (OM-PTS) for mapping purpose. This scheme does not require transmission of any side information for decoding purpose at the receiver. Simulations are presented to show that the proposed scheme provides the same PAPR performance as conventional PTS but without need of SI transmission.
Online publication date: Thu, 21-Sep-2017
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Information and Communication Technology (IJICT):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email firstname.lastname@example.org