Peak-to-average power ratio reduction of SFBC MIMO-OFDM signals using unused tones

Files in This Item:
File Description SizeFormat 
05441004_prepublishing version.pdf212.4 kBAdobe PDFDownload
Title: Peak-to-average power ratio reduction of SFBC MIMO-OFDM signals using unused tones
Authors: Braz, IsabelaGuan, LeiZhu, AndingBrazil, Thomas J.
Permanent link:
Date: 23-Feb-2010
Online since: 2021-03-31T11:22:49Z
Abstract: Multiple input multiple output techniques combined with orthogonal frequency division multiplexing (MIMO-OFDM) provide a promising approach for wireless systems. However, a serious drawback of the OFDM system is the high peak-toaverage power ratio (PAPR), which may severely affect the power efficiency of RF power amplifiers. In this paper, we propose a simple method to reduce the PAPR of MIMO-OFDM signals based on the use of unused subcarriers. Instead of processing the signals at each transmitter separately, a peak cancelling signal is generated at one antenna and is then applied to all the others with only simple modifications. Simulation has shown that a minimum 2 dB reduction in PAPR can be achieved for all transmit signals using this approach. As the signal processing is nearly all done at a single transmitter, repetition of the operations at each transmitter is avoided, and therefore the overall cost of the system can be significantly reduced.
Type of material: Conference Publication
Publisher: IEEE
Copyright (published version): 2010 IEEE
Keywords: ClippingMultiple Input Multiple Output (MIMO)Orthogonal Frequency Division Multiplexing (OFDM)Peak to Average Power Ratio (PAPR)Space Frequency Block Coding (SFBC)
DOI: 10.1109/IMWS.2010.5441004
Other versions:
Language: en
Status of Item: Peer reviewed
Is part of: 2010 IEEE International Microwave Workshop Series on "RF Front-ends for Software Defined and Cognitive Radio Solutions", IMWS 2010 - Proceedings
Conference Details: The 2010 IEEE International Microwave Workshop Series on RF Front-ends for Software Defined and Cognitive Radio Solutions (IMWS), Aveiro, Portugal, 22-23 February 2010
ISBN: 9781424457533
This item is made available under a Creative Commons License:
Appears in Collections:Electrical and Electronic Engineering Research Collection

Show full item record

Page view(s)

checked on Apr 16, 2021


checked on Apr 16, 2021

Google ScholarTM



If you are a publisher or author and have copyright concerns for any item, please email and the item will be withdrawn immediately. The author or person responsible for depositing the article will be contacted within one business day.