Abstract
Best-to-worst (BTW) subcarrier pairing (SCP) has been discussed as a technique in orthogonal frequency division multiplexing (OFDM)-based amplify-and-forward (AF) relay networks, owing to a good bit error rate (BER) performance. However, the technique does not consider peak to average power ratio (PAPR), where the PAPR must be kept as low as possible to use a low cost power amplifier (PA) at relay node (RN). PAPR reduction technique should be applied in RN, because lower PAPR in source node (SN) using PAPR reduction technique might not be maintained in RN owing to channel effects between SN and RN. We propose a new approach of BTW SCP technique, S-BTW (shifted BTW) that can perform a low PAPR as well as good BER performance. After BTW reordering, we calculate PAPR and compare the value with a threshold value. If the PAPR cannot achieve the required PAPR value, the subcarrier is one-by-one circularly shifted until reaching a maximum number of shifts. For the case that the required PAPR cannot be achieved after reaching maximum number of shifts, we propose a combination of the S-BTW and clipping. Both simulation and theoretical analysis is performed to prove the validity of our proposal.
| Original language | English |
|---|---|
| Title of host publication | IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC |
| Pages | 2005-2010 |
| Number of pages | 6 |
| DOIs | |
| Publication status | Published - 2013 |
| Event | 2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2013 - London, United Kingdom Duration: 2013 Sep 8 → 2013 Sep 11 |
Other
| Other | 2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2013 |
|---|---|
| Country | United Kingdom |
| City | London |
| Period | 13/9/8 → 13/9/11 |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
Cite this
PAPR reduction of amplify-and-forward relay OFDM system using subcarrier pairing method. / Harum, Norharyati Binti; Yuda, Kouki; Ohtsuki, Tomoaki.
IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC. 2013. p. 2005-2010 6666473.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - PAPR reduction of amplify-and-forward relay OFDM system using subcarrier pairing method
AU - Harum, Norharyati Binti
AU - Yuda, Kouki
AU - Ohtsuki, Tomoaki
PY - 2013
Y1 - 2013
N2 - Best-to-worst (BTW) subcarrier pairing (SCP) has been discussed as a technique in orthogonal frequency division multiplexing (OFDM)-based amplify-and-forward (AF) relay networks, owing to a good bit error rate (BER) performance. However, the technique does not consider peak to average power ratio (PAPR), where the PAPR must be kept as low as possible to use a low cost power amplifier (PA) at relay node (RN). PAPR reduction technique should be applied in RN, because lower PAPR in source node (SN) using PAPR reduction technique might not be maintained in RN owing to channel effects between SN and RN. We propose a new approach of BTW SCP technique, S-BTW (shifted BTW) that can perform a low PAPR as well as good BER performance. After BTW reordering, we calculate PAPR and compare the value with a threshold value. If the PAPR cannot achieve the required PAPR value, the subcarrier is one-by-one circularly shifted until reaching a maximum number of shifts. For the case that the required PAPR cannot be achieved after reaching maximum number of shifts, we propose a combination of the S-BTW and clipping. Both simulation and theoretical analysis is performed to prove the validity of our proposal.
AB - Best-to-worst (BTW) subcarrier pairing (SCP) has been discussed as a technique in orthogonal frequency division multiplexing (OFDM)-based amplify-and-forward (AF) relay networks, owing to a good bit error rate (BER) performance. However, the technique does not consider peak to average power ratio (PAPR), where the PAPR must be kept as low as possible to use a low cost power amplifier (PA) at relay node (RN). PAPR reduction technique should be applied in RN, because lower PAPR in source node (SN) using PAPR reduction technique might not be maintained in RN owing to channel effects between SN and RN. We propose a new approach of BTW SCP technique, S-BTW (shifted BTW) that can perform a low PAPR as well as good BER performance. After BTW reordering, we calculate PAPR and compare the value with a threshold value. If the PAPR cannot achieve the required PAPR value, the subcarrier is one-by-one circularly shifted until reaching a maximum number of shifts. For the case that the required PAPR cannot be achieved after reaching maximum number of shifts, we propose a combination of the S-BTW and clipping. Both simulation and theoretical analysis is performed to prove the validity of our proposal.
UR - http://www.scopus.com/inward/record.url?scp=84893208690&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84893208690&partnerID=8YFLogxK
U2 - 10.1109/PIMRC.2013.6666473
DO - 10.1109/PIMRC.2013.6666473
M3 - Conference contribution
AN - SCOPUS:84893208690
SN - 9781467362351
SP - 2005
EP - 2010
BT - IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
ER -