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

Author(s)
Braz, Isabela  
Guan, Lei  
Zhu, Anding  
Brazil, Thomas J.  
Uri
http://hdl.handle.net/10197/12077
Date Issued
2010-02-23
Date Available
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
Subjects

Clipping

Multiple Input Multip...

Orthogonal Frequency ...

Peak to Average Power...

Space Frequency Block...

DOI
10.1109/IMWS.2010.5441004
Web versions
http://imws2010.av.it.pt/
Language
English
Status of Item
Peer reviewed
Journal
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
https://creativecommons.org/licenses/by-nc-nd/3.0/ie/
File(s)
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05441004_prepublishing version.pdf

Size

212.4 KB

Format

Adobe PDF

Checksum (MD5)

113c9e973f1098f19a1fa7d081025110

Owning collection
Electrical and Electronic Engineering Research Collection

Item descriptive metadata is released under a CC-0 (public domain) license: https://creativecommons.org/public-domain/cc0/.
All other content is subject to copyright.

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