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

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Title: Peak-to-average power ratio reduction of SFBC MIMO-OFDM signals using unused tones
Authors: Braz, IsabelaGuan, LeiZhu, AndingBrazil, Thomas J.
Permanent link: http://hdl.handle.net/10197/12077
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: http://imws2010.av.it.pt/
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: https://creativecommons.org/licenses/by-nc-nd/3.0/ie/
Appears in Collections:Electrical and Electronic Engineering Research Collection

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